News_News_Dalian Barnett Flex Hydraulics Co.,Ltd.

2021-04

Maintenance of crimping machine

 release time : 2021-04--15  Traffic : 0

Maintenance of crimping machine Precautions for crimping machine 1. When crimping, place the joint in the center of the mold as much as possible, and do not press on the hexagonal nut. 2. Prevent tools and other foreign objects from entering the press head. 3. After the work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in the open state and the spring can be maintained, and the oil cylinder is also in the pressure relief state to extend the life of the oil seal. Crimping machine maintenance 1. The hydraulic oil in the oil tank should be replaced when it exceeds the time limit specified by the hydraulic oil manufacturer, or visually check the oil level gauge. If the hydraulic oil is oxidized and darkened, it must be replaced. 2. Frequently inject anti-wear lubricant into the moving surface of the mold base. 3. During the working hours of the crimping machine, please cover the dust cover to prevent sundries from falling into the mold base.

14

2021-04

Installation and debugging of crimping machine

 release time : 2021-04--14  Traffic : 0

Installation and debugging of crimping machine How to install and debug the crimping machine and the pipe crimping machine? The handling of the crimping machine and the pipe crimping machine must meet the relevant conditions, and the order must be paid attention to, and it cannot be inverted. Reduce installation errors caused by transportation. 1. Installation: The crimping machine and pipe pressing machine should be placed horizontally on a stable foundation and grounded. 2. Oil filling: Open the oil tank cover and add 46 hydraulic oil to the 2/3 position of the oil level gauge. 3. Electricity connection: connect the power cord to the power supply specified by the buckle machine, start the motor and observe the direction of rotation. The direction of the motor should be consistent with the direction marked by the motor. If the direction of the motor is inconsistent with the marked direction, please change the position of two of the live wires. Micrometer: It is used to adjust the shrinkage of the crimping hose. It is 1mm more in the counterclockwise half a week, and 1mm less than the clockwise half a week. 4. Pressure adjustment: The pressure of the crimping machine is adjusted by the overflow valve, the pressure is adjusted clockwise to increase, and the pressure is adjusted counterclockwise to decrease (it has been adjusted at the factory, and can be adjusted if necessary). In fact, the relevant parameters of the crimping machine and the pipe pressing machine have been adjusted in advance. If errors occur, they can be corrected by themselves. Of course, all operations must be carried out under the guidance of professionals.

09

2021-04

Application of hose crimping machine in greenhouse

 release time : 2021-04--09  Traffic : 0

Application of hose crimping machine in greenhouse Greenhouse is also known as a facility that can transmit light and keep warm (or heat), and is used to cultivate plants. In the seasons that are not suitable for plant growth, it can provide growth period and increase yield. It is mostly used for plant cultivation or seedling cultivation of temperature-loving vegetables, flowers, forests, etc. in low temperature seasons. So we can eat the vegetables we like to eat in winter, and the greenhouse brings great convenience to people. Greenhouses can be divided into thin-film greenhouses, glass greenhouses, and plastic greenhouses according to their materials. Among them, plastic greenhouses are the most commonly used. The main structure of plastic greenhouses generally uses hot-dip galvanized steel pipes as the main bearing structure, factory production, and on-site installation. Steel pipes play a vital role in the firmness of greenhouses. Because of the different lengths and shapes of steel pipes, they need to be connected. The hose crimping machine uses pressure to crimp one steel pipe to a smaller size, and insert it with another steel pipe to make the greenhouse skeleton structure stable. Regarding the steel pipe crimping to make the outer diameter smaller, there are currently two ways, one is through thermal deformation, that is, the steel pipe is placed in a certain temperature environment, and the corresponding tooling is used for processing to make the outer diameter smaller. However, the processing cost of this method is relatively high and the efficiency is low. The other is cold extrusion deformation. The performance of our company's hose crimping machine is stable and reliable. It can crimp steel pipes and the resulting steel pipes are neat in shape, easy to install and disassemble, and the steel pipes can be reused. After years of research and development by R&D personnel, a new generation of fully automatic hose crimping machine has been developed and produced through changing methods. The advance and retreat of the piston and the opening and contraction of the mold rely on the power generated by the hydraulic power source. It not only moves smoothly and returns quickly, but also does not cause the mold to be locked due to the spring return. Moreover, the design of the cylinder locking system is through front and back, which is easy to withhold various special-shaped elbows, and finally meet the forming requirements. Through this innovation, the problem of fast crimping speed and high precision of the fully automatic crimping machine has been realized in a true sense. Realize the compact structure of the equipment, reasonable assembly process, one machine with multiple functions, which can complete low-pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, engine oil pipes, gasoline fuel supply pipes, as well as construction accessories, daily heating The withholding of water and gas pipes provides users with more sources of raw materials and a variety of products to meet the needs of various users.

08

2021-04

How To Increase The Utilization Rate Of Hose Cutting Machine

 release time : 2021-04--08  Traffic : 0

How to increase the utilization rate of hose cutting machine As a material processing equipment, the hose cutting machine is used extremely frequently in the daily work of mechanical processing enterprises. How to reduce the use cost of the pipe cutting machine is a problem that many users are particularly concerned about. Wuhan Popular Science integrates many end users. Using experience, several suggestions for controlling cutting costs are proposed for the daily use of CNC cutting equipment: 1. Maximize cutting time: Although the phose cutting machine is a kind of preliminary processing equipment, the frequent switching on and off not only reduces the work efficiency, but also has the loss of the equipment. Here we recommend that the company reasonably plan the cutting time and try to complete the cutting task in one time and in large quantities. Reduce downtime caused by maintenance. As an auxiliary infrastructure, we also put forward several suggestions for material transportation in order to shorten the cutting gap. Users can set up multiple cutting platforms and bridge cranes at the processing site. 2. Minimize secondary processing: The best way to control the cost of secondary processing is to optimize the cutting quality. To do this, not only a good machine tool but also a well-trained operator is needed. Skilled operators can cut more workpieces, obtain higher cutting quality, less waste and secondary processing costs. 3. Control the cost of consumable parts: A good operator can produce more products with the same number of consumable parts, and can prevent fatal errors from occurring. In this way, the time for manual loading and unloading can be reduced, and the operator can concentrate on the cutting work. Recommendations for machine tool operation: If the automatic height adjustment device or the idle speed of the machine tool is too slow, the cutting torch positioning time may even be longer than the actual cutting time.

07

2021-04

Precautions For Hose Crimping Machine

 release time : 2021-04--07  Traffic : 0

Precautions for hose crimping machine: With its performance, the crimping machine is used in construction machinery, vehicles, hydraulic machinery, welding and cutting equipment and other industries, and has been favored. During use, Operators can easily overlook some operating procedures 1. The operator must operate in accordance with the process regulations. 2. The power supply must be cut off after the machine is stopped. 3. When changing the mold, it must be done after the shutdown. 4. The joint surface of the mold seat and the mold should be kept clean, and there should be no hard objects such as metal shavings. 5. Pour lubricating oil on the inclined surface of the mold base before starting the machine. 6. The positioning screws must be tightened before installing the module. 7. The pressure regulating valve must be adjusted under the specified pressure. 8. It is strictly forbidden to reach inside when working. 9. The electrical safety regulations must be observed when overhauling electrical parts.

06

2021-04

The Original Analysis Of the Damage Of The High Pressure Hose Assembly

 release time : 2021-04--06  Traffic : 0

The Original Analysis Of the Damage Of The High Pressure Hose Assembly The high pressure hose assembly has problems during use, mainly due to the following aspects: 　　 1. Production quality: 　　 1. The vulcanization of the high-pressure hose does not reach the positive vulcanization, and the manifestation is under-sulfur or over-sulfur. Due to the above two reasons, its various attributes and functions cannot meet the requirements, which leads to problems in the use process. 　　2. The wall thickness of the hose is uneven, especially the inner rubber layer has the greatest impact. 3. The steel wire braiding or winding process did not follow the design process, the braiding angle did not reach 54 degrees 44 minutes, the steel wire braiding was too tight or too loose, the deformation of the high pressure hose (after pressure) (elongation, shortening or bending deformation) The amount) is larger. 　　4. Poor airtightness of the outer rubber layer leads to steel wire corrosion. 　　5. The inner layer of rubber has poor sealing performance, which makes it easy for high-pressure oil to enter the steel wire layer. 　　 6. The adhesive layer and the steel wire layer have insufficient adhesion. 　　 2. Blind production, no further improvement in accordance with the environmental or technical requirements, and the performance of the high-pressure hose cannot meet the specific environmental or technical requirements. This aspect is rare, but as long as it is mentioned, attention should be paid. 　　 Three. Quality problems of matching crimping joints: 　　 1. The material of the crimping joint does not meet the requirements. 　　 2. The process design of the crimping joint fails to meet the requirements. 　　 Fourth, the withholding is not in place, for example, the amount of withholding is not enough. 　　 5. The high-pressure hose assembly is not installed properly or installed correctly. 　　6. The inside of the high-pressure hose assembly must be kept clean. If foreign matter (dust) enters the pump or valve, it will affect the normal operation of other equipment and indirectly affect the high-pressure hose assembly.

05

2021-04

How To Choose A Hydraulic Rubber Hose?

 release time : 2021-04--05  Traffic : 0

How to choose a hydraulic hose? Determination of technical indicators: to understand the needs of the product, and then determine the main indicators of the hydraulic hose according to the needs. For example: working pressure, hydraulic hose inner diameter, hydraulic hose outer diameter, hydraulic hose transport medium, use environment, service life, length dimension, minimum bending radius, etc., list a detailed table to determine the required hydraulic hose Technical indicators. Here is how to choose from these 8 aspects: 1. Working pressure: This depends on the maximum working pressure and whether it can meet the requirements. Don't ask too much when choosing, just use enough. 2. The inner diameter of the hydraulic hose: to ensure that the medium transmitted in the hydraulic hose can be transmitted smoothly without clogging, and it should be selected according to the diameter of the applied product, and it should not be too large or too small; 3. The outer diameter of the hydraulic hose: Choose according to the size of the applied product caliber, not too large or too small, to ensure that it can be assembled normally and does not leak; 4. Delivery medium: This is very important, we must pay attention to it. Choose the corresponding hydraulic hose when choosing. For example, if the delivery medium is hydraulic oil, choose hydraulic oil resistant when choosing; 5. Use environment: Choose the hose according to the use environment, see whether the environment is harsh, whether it is in the open air, the light time, whether it is frequent friction, the external temperature, etc. 6. Service life: According to the requirements of the product, choose the appropriate service life, and consider the difficulty and cost of replacement of the hydraulic hose when the service life is up; 7. Length size: According to the size of the product and the specific conditions of use, select the appropriate length size, try to be just right, and not allow it to be excessively bent or kept in a state of vigorous tension all the time; 8. Minimum bending radius: Because the hydraulic hose has a minimum bending radius when in use, it is necessary to consider the specific location of the product using the hydraulic hose and determine the appropriate minimum bending radius, so that the normal use environment of the hydraulic hose does not exceed Minimum bending radius.

03

2021-04

Common Failures And Cause Analysis Of Hydraulic Hoses

 release time : 2021-04--03  Traffic : 0

Common Failures And Cause Analysis Of Hydraulic Hoses Hydraulic hose is an important part of construction machinery such as concrete pumps, excavators, loaders, etc. However, it is often not valued by people. When there are leakage, cracks, cracks, loosening and other faults in use, it is often not analyzed The reason for the failure is simply to replace the hose, and the same failure will be repeated shortly after use. The loosening or rupture of hydraulic hoses not only wastes oil and pollutes the environment, but also affects work efficiency, and even causes accidents, endangering the safety of humans and machines. Reasons for failure analysis of hydraulic hoses: improper use, unreasonable system design and unqualified hose manufacturing, etc. I will discuss it in detail below based on my experience in actual work. First, analyze the characteristics of the pipe. The hoses are divided into rubber hoses and plastic hoses. Plastic hoses are cheap and easy to install, but they have poor carrying capacity and are easy to age. They are only suitable for oil return pipes or drain pipes. Rubber hoses are divided into high pressure hoses and low pressure hoses. High pressure hoses are generally composed of It is composed of four parts: outer rubber layer, steel wire reinforcement layer, middle rubber layer and inner rubber layer. The inner rubber layer is in direct contact with the hydraulic oil, and one is made of synthetic rubber. The bearing capacity of the hose depends on the reinforcing layer, which is the skeleton of the hose, usually braided or wound with steel wires. Most of the medium and high pressure use steel wire braid as the skeleton, and the high pressure and ultra high pressure mostly use the steel wire winding skeleton. The outer rubber layer is generally made of rubber with good abrasion resistance and corrosion resistance to ensure that the reinforcement layer is not mechanically damaged, chemically corroded, damp and rusted. The low-pressure hose uses braided cotton and twine instead of braided steel wire, and is generally used for low-pressure oil return. pipeline. Hose failures are generally manifested in the following four aspects: failure of the outer rubber layer, failure of the inner rubber layer, failure of the reinforcement layer, failure of the rupture. The causes and countermeasures of hydraulic hose failure are as follows: 1. Failure of the outer rubber layer (1) Cracks appear on the outside of the hose The main reason for the appearance of cracks in the hose is that the hose is bent in a cold environment. If you find cracks on the outside of the hose, pay attention to observe whether there are cracks in the inner rubber of the hose and decide whether to replace the hose immediately. Therefore, do not move the hose or dismantle the hydraulic system at will in a cold environment, and do it indoors if necessary. If you need to work in a colder environment for a long time, you should switch to a cold-resistant hose. (2) The bubbling on the outer surface of the hose is caused by the unqualified production quality of the hose or improper use during work. If bubbling occurs in the middle of the hose, it is mostly a hose production quality problem, and qualified hoses should be replaced in time; if bubbling occurs at the joint of the hose, it may be caused by improper installation of the joint. There are often two types of hose joints: detachable and withholding. The detachable pipe joint is made into a hexagonal shape on the outer jacket and the joint core, which is convenient for frequent disassembly and assembly of the hose; the crimping pipe joint is composed of the joint jacket and the joint core, and the outer rubber layer must be peeled off during assembly, and then crimped on the special equipment , So that the hose can get a certain amount of compression. (3) The hose is not broken but a large amount of oil seepage. The hose has a lot of oil seepage but no rupture is found. The reason is that the inner rubber is eroded and scratched when the high pressure liquid flows in the hose, until the large area of the steel wire layer leaks out. Oil oozing. This failure usually occurs at the bend of the pipe, the hose should be checked and replaced, and the bend radius of the hose should meet the technical requirements during use. (4) The outer rubber layer of the hose is severely deteriorated, and the surface has microcracks. This is a manifestation of the natural aging of the hose. Due to aging and deterioration, the outer layer is continuously oxidized to make the surface covered with a layer of ozone, which thickens with time. As long as the hose is slightly bent during use, tiny cracks will occur. In this case, the hose should be replaced. 2. Failure of the inner rubber layer (1) The inner rubber layer of the hose is hard and cracked: the main reason is that the rubber product is added with a plasticizer to make the hose flexible and plastic. But overheating

03

2021-04

How To Extend The Service Life Of High Pressure Hose?

 release time : 2021-04--03  Traffic : 0

How to extend the service life of high pressure hose? The service life of the hydraulic hose assembly depends on its usage conditions. In order to prolong the service life of the high-pressure hose, the hose assembly in use should be checked regularly for leaks, kinks, blistering, scratches, abrasion, or other damage to the outer rubber layer. When the assembly is found to be damaged or worn, it must be replaced immediately. The service life of the assembly can be extended by the following measures: 1. Use factors: 1. Installation of the hose assembly: The installation of the hydraulic hose assembly should comply with the relevant standards of SAEJ1273 on the direction and arrangement of hydraulic hoses to ensure that the hose assembly is used correctly. 2. Working pressure: The pressure of the hydraulic system should not exceed the rated working pressure of the hose. The pressure rise or peak value that exceeds the rated working pressure is extremely destructive and must be considered when selecting a hose. 3. Minimum burst pressure: The burst pressure mentioned in this catalog is limited to destructive tests to determine the design safety factor. 4. Temperature range: Do not use the hose under temperature conditions (including internal and external temperatures) exceeding the recommended limit. If the hydraulic fluid used contains emulsion or solution, please refer to the relevant technical data separately. Regardless of the operating temperature range of the hose, it must not exceed the maximum operating temperature recommended by the fluid manufacturer. 5. Fluid compatibility: The hydraulic hose assembly (inner rubber layer, outer rubber layer, reinforcement layer and hose joints) must be compatible with the fluid used. Proper hoses must be used because the chemical properties of phosphate-based and petroleum-based hydraulic fluids are completely different. Many hoses are suitable for one or more fluids, but not all fluid types. 6. Minimum bending radius: Do not bend the hose to less than the recommended minimum bending radius, nor subject the hose to tension or torque. This may cause the reinforcement layer to withstand excessive stress and greatly reduce the hose's ability to withstand pressure . 7. Hose size: The size of the hose (inner diameter) must be able to handle the required flow rate. If the inner diameter is too small at a specific flow rate, it will cause excessive fluid pressure and heat generation, causing damage to the inner rubber layer. 8. Hose direction arrangement: The hose should be restrained, protected or guided (use pipe clamps when necessary) to minimize the risk of damage to the ring caused by excessive bending, shaking, or contact with moving parts or corrosive substances. Determine the appropriate hose length and joint form to prevent wear, avoid contact with sharp objects and twist, so as to achieve a leak-proof connection. . 9. Hose length: When determining the correct hose length, the length changes under pressure, machine vibration and movement, and when the hose assembly is wired should be taken into consideration. 10. Hose application: Choose the appropriate hose according to the specific application. 2. Environmental factors: The storage environment, together with the rubber material, can change the storage life of the hose. The specific service life is difficult to quantify because there are many factors that affect the hose. If the storage measures are proper, the storage life can reach 3-5 years. Beyond this time, the service life of the hose will be greatly reduced, depending on various factors in the storage environment, including: 1. Temperature: The hose should be stored in a cool and dry place, and the temperature must not exceed +100°F (+38°C). If it is stored at a temperature below freezing point, it may need to be preheated after being taken out before it can be processed, tested and put into use. 2. Direct sunlight, rain, heater or close to electrical equipment. 3. Humidity and ozone. 4. Oil, solvent, corrosive materials or flue gas. 5. Insects or rodents. 6. Radioactivity. 7. Available space and whether there is bending. Three, storage factors 1. The hose should be stored in the original container. Don't pile it too high, otherwise its own weight will crush the bottom hose. 2. It is recommended to perform visual inspection and testing before using hoses that have been stored for a long time. Hoses judged to be in bad condition should be replaced to avoid failure, property damage or personal injury. The warehouse shall be managed according to the first-in first-out principle. Excessive storage time and poor environment will cause the hose grade to drop, performance degradation and premature failure.

02

2021-04

　The influence of hose assembly cleanliness on hydraulic system

 release time : 2021-04--02  Traffic : 0

　The influence of hose assembly cleanliness on hydraulic system Hydraulic system requires high cleaned hydraulic oil. 75% failure of hydraulic system are due to exceeding solid particle in hydraulic oil. Main pollution resource are rubber particles and scraps during hydraulic assembly processing. 　　Hydraulic assembly processing caused the main pollution,especially mental scraps and rubber particles during hose cutting or skiving. There are three basis standards to check cleanliness: ISO4406,ISO4405 and NAS1638, and ISO4406 is the most common one which can divided different grades according to the number and size of solid particle contaminants in hydraulic system. 　　In order to keep hose clean,all hydraulic assembly should be cleaned with proper cleaning equipment.BNTFLEX cleaning equipment BNT200H is a good choice, and this equipment can clean hose inwall with leaner which contains rust inhibitor, and then blowing the leaner with high-pressure gas.

01

2021-04

How to select hydraulic hose

 release time : 2021-04--01  Traffic : 0

How to select hydraulic hose Hydraulic hose is an important link in the hydraulic system and equipment. It can bear high pressur, easy to remove, and very widely used in hydraulic industry. Hydraulic hose consists of the inner and outer rubber layer and steel wire layer. There are different layer of steel wire from 1 to 6 according to the pressure it can bear, and the maximum pressure is 60mpa.Hydraulic hose inner is made of synthetic rubber which resistant to mineral oil and bio-oil and with good shrink performance. Outer layer is made of wear-resisting and aging-resisting rubber. Middle layer is high tensile steel wire winding layer. Suitable medium for hydraulic hose include : mineral oil, oil-water mixture, polyethylene glycol based oil, synthetic lipid based oil, rapeseed oil and so on. Application working temperature is -40℃ to 100℃, maximum temperature is 125℃. Selecting hydraulic hose correctly can ensure the safety of the whole hydraulic system, Layout space reasonably, and control the costs preferably.Pay attention to the following 4 points when selecting: 1. Select steel wire layer according to pressure, the more of steel wire layer, the higher pressure can take.Every hydraulic hose has a maximum working pressure,bursting pressure is 4 times as working pressure. The pressure is higher, the price is higher ,so choose the right hose according to practical system pressure. We advice you choose impulse resistant hose if hydrualic system whose impact pressure appears very frequently. 2．Select right inner diameter base on the flow, and It’s important to choose inner diameter accordingly.Undersized inner diameter will increase the speed of flow, reduce efficiency and over high decompression. On the other side, oversize inner diameter will increase cost. 3.Pay attention to the bending radius of hose.It’s better to minus crimping length when calculate bending radius, to withhold length minus front joint.It will reduce the pressure-bearing ability and working life if bend radius is too small. 4. Select reasonable fittings according to the hydraulic arrangement.For example : SAE flange fittings, internal thread fittings, external thread fittings, 90° and 45° fittings assembly angle and hose assembly angle.

01

2021-04

Cleaning Methods: Fuel Tanks of Construction Machinery

 release time : 2021-04--01  Traffic : 0

Cleaning Methods: Fuel Tanks of Construction Machinery Most of the construction machinery to diesel engine as the driving force, due to poor operating conditions, the fuel tank is easy to mix with dust or rain and snow, diesel pollution. In addition, the fuel tank of diesel and air tank wall and long-term contact, will gradually generate some dirt into the bottom of the tank or attached to the wall. These factors will cause the fuel system precision coupling accidental wear and tear, so the diesel engine should be cleaned once every 600h oil tank. Construction machinery on the tank tall and bulky, can not always be removed to clean. Some imported machines, such as the Caterpillar 613C scraper, are welded together with the bucket's support frame and can not be disassembled at all. This kind of scraper is very strict to the cleanliness of diesel oil. Many machine operators have to take the oil in the net oil tank, and then open the oil drain switch after cleaning the diesel oil until the diesel oil is out of the stolen goods. This cleaning the tank is a waste, but also can not attach the tank wall clean. To this end we have made a clean air tank with compressed air nozzle. The nozzle is a 1m long thin steel pipe, the bottom of the block with the end, around the bottom of the drill a few 1mm diameter holes. Use the nozzle, do not have to remove the tank, a few minutes to clean the internal tank. 1 Cleaning method (1) Open the oil tank oil drain switch and put the finished oil, while closing the oil drain switch and oil supply switch, remove the tank cap, oil filter and oil dipstick, to the tank into 20 ~ 40L clean diesel as cleaning Oil (depending on the size of the fuel tank). (2) Connect the pump hose to the nozzle and lower the nozzle into the bottom of the tank. When the air pump cylinder air pressure rose to 0.6 ~ 0.7MPa, open the gate valve, so that high-speed air from the hole into the bottom of the oil reservoir, so that diesel fuel and splash up, so that the internal tank scouring. In the cleaning process, the gas cylinder pressure should be maintained at 0.4 ~ 0.5MPa. To prevent the oil mist out of the tank, use gauze to block the tank mouth, so as not to affect the nozzle swing is appropriate. (3) Close the reservoir valve, remove the nozzle, clean the oil tank clean oil, plus 15 ~ 30L clean diesel, according to the above method and then cleaned 1 times. After cleaning, release the cleaning oil, install the oil filter, oil dipstick and fuel tank cover, thus completing the tank cleaning work. Released cleaning oil can be used after the precipitation of other tanks or parts of the cleaning. 2 Note For the proper use of diesel fuel tank, should also note the following points: (1) Diesel fuel in the tank should be added before the precipitation of more than 48h. (2) before each shift should open the oil tank oil discharge switch, the bottom sediment release. (3) the operation to pay attention to master the fuel tank in the oil, so as not to run out of oil to the air into the fuel system, affecting the normal work of the machine. (4) should be filled with diesel after work every day, so as not to empty the inner wall of the tank due to condensation of water droplets sinking into the diesel fuel, the fuel system of precision parts even premature corrosion. (5) the tank cover ventilation holes should always clear, so as to avoid negative pressure within the tank to reduce oil pressure, reduce the fuel supply, resulting in machine power down or unstable operation.

31

2021-03

The possible failure of the inner layer of high pressure hydraulic hose and its solution

 release time : 2021-03--31  Traffic : 0

The possible failure of the inner layer of high pressure hydraulic hose and its solution 1, the rubber hose within the hard layer, crack: As the rubber products by adding a plasticizer, so flexible plastic tube. Hose in high temperature, high pressure, the hose overheating, plasticizer will overflow. In addition, overheating of the oil through the system in the cylinder, valves or other components, if a greater pressure drop will lead to decomposition of oil, resulting in the hose layer of oxidation and hardening. In this case, you should first check the hydraulic system operating temperature is normal, the valve throttling, the pump suction duct is smooth, etc., in the exclusion of all factors that may lead to oil temperature and oil decomposition after the replacement of the hose. If only the hose under the rupture of the hard rubber and the top of the well maintained, this indicates that the hose rupture at the excessive extrusion, bending too fast or reverse phenomena such as oil heating and speed up oxidation, will cause the plastic hair hard . 2, the hose inner layer of serious deterioration, significant swelling: hose inner layer of serious deterioration, significant swelling due to the use of hydraulic oil over time or oxidized deterioration of the dirt is present in the hydraulic system, the hose by the chemical effect Deterioration, will be found in the oil back to the broken pieces of rubber. If this happens, should check the physical and chemical indicators of hydraulic oil, check the system fluid and hose glue material compatibility and working temperature is in line with standards.

30

2021-03

How to choose a hydraulic hose?

 release time : 2021-03--30  Traffic : 0

How to choose a hydraulic hose? Determination of technical indicators: to understand the needs of the product, and then determine the main indicators of the hydraulic hose according to the needs. For example: working pressure, hydraulic hose inner diameter, hydraulic hose outer diameter, hydraulic hose transport medium, use environment, service life, length dimension, minimum bending radius, etc., list a detailed table to determine the required hydraulic hose Technical indicators. Here is how to choose from these 8 aspects: 1. Working pressure: This depends on the maximum working pressure and whether it can meet the requirements. Don't ask too much when choosing, just use enough. 2. The inner diameter of the hydraulic hose: to ensure that the medium transmitted in the hydraulic hose can be transmitted smoothly without clogging, and it should be selected according to the diameter of the applied product, and it should not be too large or too small; 3. The outer diameter of the hydraulic hose: Choose according to the size of the applied product caliber, not too large or too small, to ensure that it can be assembled normally and does not leak; 4. Delivery medium: This is very important, we must pay attention to it. Choose the corresponding hydraulic hose when choosing. For example, if the delivery medium is hydraulic oil, choose hydraulic oil resistant when choosing; 5. Use environment: Choose the hose according to the use environment, see whether the environment is harsh, whether it is in the open air, the light time, whether it is often rubbed, the external temperature, etc.; 6. Service life: According to the requirements of the product, choose the appropriate service life, and consider the difficulty and cost of replacement of the hydraulic hose when the service life is up; 7. Length size: According to the size of the product and the specific conditions of use, select the appropriate length size, try to be just right, and not allow it to be excessively bent or kept in a state of vigorous tension all the time; 8. Minimum bending radius: Because the hydraulic hose has a minimum bending radius when in use, it is necessary to consider the specific location of the product using the hydraulic hose and determine the appropriate minimum bending radius, so that the normal use environment of the hydraulic hose does not exceed Minimum bending radius. It can be seen from the above 8 points that the choice of hydraulic hose is still very important. If you do not choose from the above 8 points carefully, it will affect the use of the product.

29

2021-03

The manufacturer of the crimping machine analyzes the cause of the failure of the hydraulic piping system of the construction machinery

 release time : 2021-03--29  Traffic : 0

The manufacturer of the crimping machine analyzes the cause of the failure of the hydraulic piping system of the construction machinery The hydraulic pipeline system of construction machinery is the power transmission system of the main engine of construction machinery, which can be described as the blood vessel of the whole machine. The quality problems of the hydraulic piping system of domestic construction machinery are mainly manifested in the oil leakage, oil leakage and cleanliness of the piping system, the product quality is not up to the standard, there are technical barriers, and it cannot be used for high-pressure vehicles. The above problems are analyzed as follows: Causes of failure of hydraulic hose assembly: (1) When the hydraulic hose assembly is crimping the joint, the crimping pressure is too large, and the inner rubber layer of the hose is injured, causing oil leakage. (2) When the hydraulic hose assembly is crimping the joint, the crimping force is not enough, causing oil leakage, oil leakage and pulling out. (3) Under repeated pulse pressure, the jacket rebounds and the buckle pressure decreases, causing oil leakage, oil leakage and pull-out. (4) The machining accuracy of the joint is not up to the standard, causing oil leakage and oil leakage at the joint. (5) Improper use method, resulting in reduced service life.

28

2021-03

The working principle of hydraulic machinery

 release time : 2021-03--28  Traffic : 0

The working principle of hydraulic machinery Hydraulic press is a device that uses hydraulic transmission technology for pressure processing, and can be used to complete various forging and press forming processing. For example, the forging of steel, the forming of metal structural parts, the pressing of plastic products and rubber products, etc. Hydraulic press is one of the first machines to apply hydraulic transmission. At present, hydraulic transmission has become the main transmission form of pressure processing machinery. In the heavy machinery manufacturing, aviation industry, plastics and non-ferrous metal processing industries, hydraulic presses have become important equipment. The hydraulic transmission system of the hydraulic press is mainly based on pressure conversion, with high system pressure, large flow and high power. Therefore, special attention should be paid to improving the power utilization rate of the prime mover and preventing shock and vibration when the pressure is relieved to ensure safety and reliability. According to the requirements of the pressing process, the main cylinder of the hydraulic press can complete the basic working cycle of rapid down, deceleration, pressure-holding delay, pressure relief, return stroke, and stop (any position), and the pressure, speed and pressure-holding time need to be adjustable. The ejection hydraulic cylinder is mainly used to eject the workpiece, and it is required to realize the actions of ejection, retreat, and stop. For example, when the sheet is stretched, auxiliary actions such as lifting, stopping and pressure return of the ejector hydraulic cylinder are required. Sometimes it is necessary to use a press cylinder to compress the blank to prevent the periphery from wrinkling. The hydraulic press takes the maximum pressure (tonnage) that may be output by the main actuator (master cylinder) in the main motion as the main specification of the hydraulic press, and it has been serialized. The tonnage of the ejector cylinder often adopts 20%-50% of the tonnage of the main cylinder. The ejector cylinder of the extruder can use about 10% of the main tonnage. The tonnage of the blanking cylinder of the double-acting hydraulic drawing press is generally about 60% of the tonnage of the drawing cylinder. The speed of the main cylinder is determined by the pressure processing technology. Generally, in the hydraulic system directly supplied by the pump, the working stroke speed does not exceed 50mm/s, the fast forward speed does not exceed 300mm/s, and the hydraulic press retreats and fast forwards. The speed is equal.

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2021-03

Use of crimping machine

 release time : 2021-03--27  Traffic : 0

Use of crimping machine The following is an introduction to the purpose of the crimping machine: The crimping machine is suitable for the crimping of various mechanical high and low pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, oil pipes, gasoline supply pipes, as well as construction accessories and daily hot water pipes. It is widely used Vehicles, construction machinery, hydraulic machinery, welding and cutting equipment and other industries. According to the function of use, it can be divided into hydraulic high pressure tube crimping machine, brake tube crimping machine, air conditioning tube crimping machine, power tube crimping machine, etc. According to the mechanical structure, it can be divided into straight cylinder crimping machine, double-column crimping machine, and open crimping machine. , C-type crimping machine. According to the control method, it can be divided into electromechanical crimping machine, PLC crimping machine, and numerical control crimping machine.

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2021-03

Fallos comunes y métodos de solución de problemas de la máquina prensadora de mangueras

 release time : 2021-03--27  Traffic : 0

Fallos comunes y métodos de solución de problemas de la máquina de bloqueo de tubos Fenómenos comunes de falla de la máquina de bloqueo de tubos Causa posible método de eliminación El motor no gira después de que se energiza la prensa de tubos. No hay energía en la fuente de alimentación. 1. Compruebe si el interruptor de encendido está apagado. 2. Compruebe si el contactor está cerrado. 3. Compruebe si el fusible está fundido. 4. Compruebe si el relé térmico está desconectado. El motor gira, Pero no funciona. La fuente de alimentación carece de fase. 1. Compruebe si el fusible está fundido. 2. Verifique si los tres cables están energizados. Rotación inversa del motor 1. Invierta dos fases cualesquiera de la fuente de alimentación trifásica. La tuerca de bloqueo de la válvula reguladora de presión está floja 1. Después de apretar una vuelta la válvula reguladora de presión, la tuerca se bloquea. Cantidad insuficiente de aceite hidráulico 1. Compruebe si el nivel de aceite está en la línea de nivel de líquido. La válvula de inversión electromagnética no funciona (Al verificar, la escala debe ajustarse fuera del rango de trabajo) 1. Verifique si la válvula solenoide direccional está energizada. 2. Compruebe si la válvula solenoide está atascada. La válvula solenoide no debe recibir alimentación. 1. Compruebe si hay una fuente de alimentación de 24 V para la válvula solenoide. La prensa de tubos está funcionando, pero no se alcanza la presión estándar. El valor de presión está ajustado demasiado bajo. 1. Ajuste la manija de la válvula reguladora de presión para ajustar la presión al valor especificado. La válvula reguladora de presión está atascada 1. Limpie la válvula reguladora de presión.

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2021-03

Is the tube shrinking machine, crimping machine and beer throat machine the same kind of machine?

 release time : 2021-03--26  Traffic : 0

Is the tube shrinking machine, crimping machine and beer throat machine the same kind of machine? The crimping machine is also called the pipe crimping machine, the pipe crimping machine, the pipe crimping machine, the necking machine, etc.) Guangdong Province Cantonese like to call it: beer throat machine. The English name is usually translated into: swapr.　 The crimping machine is a hydraulic equipment used to crimp the pipe assembly. It applies the shrinking force of the matched metal joint through the mold of the crimping machine, and firmly crimps the metal joint on the matched high-pressure oil pipe. The pipe locking machine is suitable for the withholding of various mechanical high and low pressure oil pipes, air pipes, water pipes, cable joints, air conditioning pipes, and construction accessories. It is widely used in vehicles, construction machinery, hydraulic machinery, welding and cutting equipment and other industries. Technical guidance for crimping machine: 1. The principle of dual hydraulic circuit operation is adopted, that is, the advance and retreat of the piston and the opening and contraction of the mold are all driven by the hydraulic power source. It not only moves smoothly and returns quickly, but also does not cause the mold to be locked due to the spring return. Moreover, the design of the cylinder locking system is through front and back, which is easy to withhold various special-shaped elbows. 2. The hydraulic system is composed of a motor, an oil pump, a solenoid valve, a pressure regulating valve, and a hydraulic valve to form a dual hydraulic circuit with forward and retreat movement, and a quick drain valve circuit is added to the dual hydraulic circuit to achieve better The purpose of quick return, and the speed is adjustable, noise and system pressure are reduced. 3. In terms of electrical control system, the control circuit is suitable for integrated printed circuit, which is easy to repair the circuit, easy to maintain, and simple to replace. 4. The crimping mold and mold base adopt a non-accumulative error-free processing technology to ensure that the crimping lines of the product after crimping are evenly spaced, and there is no big or small head phenomenon. 5. For the permanent mechanical precision and life of the crimping machine, not only high-quality alloy steel materials are selected for the components of the locking mechanism, but also a unique heat treatment process is adopted. Therefore, the longer service life of the crimping machine is inseparable from the rationality of material selection, heat treatment, machining technology and structure! I hope that after reading the above information, you can think of the same kind of machine as the crimping machine and the crimping machine when you think of the shrinking machine.

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2021-03

How to install and debug the crimping machine

 release time : 2021-03--25  Traffic : 0

How to install and debug the crimping machine In the process of installation and commissioning of the pipe press, there are many details that need to be paid attention to. The main matters for attention of the pipe press are handling, installation, micrometer, pressure adjustment, oil injection, electrical connection, and mold opening speed adjustment. 1. Handling: The pipe press is suitable to be transported by forklift, and the pressure is applied to the bottom of the pipe press. The pipe press is strictly prohibited from inverting. It is strictly forbidden to lift the pressure pipe head, motor and electrical box. 2. Installation: The pipe press must be placed horizontally on a stable foundation and grounded. Yongfeng hydraulic: precautions for installation and commissioning of pipe press 3. Micrometer: It is used to adjust the shrinkage of the crimping hose. It is 1mm more in the counterclockwise half a week, and 1mm less than the clockwise half a week. 4. Pressure adjustment: The maximum pressure of the pipe press system is 31.5Mpa, which is adjusted by the overflow valve. The clockwise adjustment pressure increases, and the counterclockwise adjustment pressure decreases (it has been adjusted at the factory, and can be adjusted by itself if necessary). Yongfeng hydraulic: precautions for installation and commissioning of pipe press 5. Oil filling: Open the oil tank cover and add 68# anti-wear hydraulic oil to the 2/3 position of the oil level gauge. 6. Connecting to electricity: Connect the power cord to the specified power source of the pipe crimping machine, start the motor and observe the direction of rotation. The direction of the motor should be consistent with the direction marked by the motor. BNTFLEX hydraulic pressure: Precautions for installation and debugging of the pipe press If the rotation of the motor is inconsistent with the marked direction, please change the position of two of the power cords. 7. Mold opening speed adjustment: The mold opening speed is controlled by the diverter valve and adjusted clockwise. The opening speed is increased, and the opening speed is adjusted counterclockwise. The opening speed is slowed down, but too fast opening speed will increase the noise. , The best value is not more than 10Mpa (it has been adjusted before leaving the factory, you can adjust it yourself if necessary). The installation and commissioning of the pipe press cannot be ignored. Perhaps it is this sloppy that causes the quality of the pipe press to be reduced and the life span is shortened, which will directly affect the benefit of the enterprise.

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2021-03

How to repair and maintain the hose crimping machine?

 release time : 2021-03--25  Traffic : 0

How to repair and maintain the hose crimping machine? 1. Working principle of the pipe press The oil pump is installed in the oil tank and immersed in the hydraulic oil to achieve the purpose of scientific heat dissipation and mute design. The oil pump is driven by the motor to output hydraulic oil and push the plunger in the withholding cylinder to move, causing the mold base to shrink radially, realizing the mold to the hose joint cover Squeeze. When the shrinkage reaches the preset value of the micrometer, the extrusion stops automatically. After the electromagnetic reversing valve changes the direction, the plunger in the cylinder moves in the opposite direction, the mold opens, and the hose is crimped. 2. Installation and debugging of the pipe press Handling: The pipe press is suitable to be transported by a forklift, and the pressure is applied to the bottom of the pipe press. The pipe press is strictly forbidden to be inverted. It is strictly forbidden to lift the pressure pipe head, motor and electrical box. Installation: The pipe press must be placed horizontally on a stable foundation and grounded. Oil filling: Open the oil tank cover and add 68# anti-wear hydraulic oil to the 2/3 position of the oil level gauge. Electricity connection: Connect the power cord to the power supply specified by the tube press, start the motor and observe the direction of rotation. The direction of the motor should be consistent with the direction marked by the motor. If the direction of the motor is inconsistent with the marked direction, please change the position of two of the power cords. Micrometer: It is used to adjust the shrinkage of the crimping hose. It is 1mm more in the counterclockwise half a week, and 1mm less than the clockwise half a week. Pressure adjustment: The maximum pressure of the pipe press system is 31.5Mpa, which is adjusted by the overflow valve. The clockwise adjustment pressure increases, and the counterclockwise adjustment pressure decreases (it has been adjusted at the factory, and can be adjusted by itself if necessary). Mold opening speed adjustment: the speed of mold opening speed is controlled by the diverter valve. It is adjusted clockwise, the opening speed is increased, and the counterclockwise adjustment is adjusted. The opening speed slows down, but the opening speed is too fast to increase the noise. The best value is not more than 10Mpa (it has been adjusted before leaving the factory, you can adjust it yourself if necessary). Three, withholding operation 1. When using the tube press for the first time, it should be crimped 20 to 30 times without load, and it can be used after observing that all parts are normal. 2. When using the pipe press in winter, it should be withheld for 20 to 30 times without load to increase the oil temperature. 3. Press the open button, after the mold base is opened, select the corresponding mold to install on the mold base according to the specifications of the hose to be crimped, and adjust the micrometer scale. 4. Place the hose with the joint in the proper position in the press head, so that the entire length is crimped at one time. 5. Press the crimping button to execute crimping operation, until the crimping head stops crimping and automatically opens the mold. 6. Take out the crimped hose assembly and use a vernier caliper to check the outer diameter of the crimped joint jacket. If it does not match the parameter table, fine-tune the micrometer scale until the crimping of the next hose meets the requirements. Four, pressure tube test example Crimping Ф19mm four-layer steel wire hose (Italian Manuli 4sp standard) From the hydraulic tubing crimping parameter table, it is found that the outer diameter of the Ф19mm four-layer steel wire hose joint jacket is 37mm before crimping and 33.5mm after crimping. The inner diameter of the mold should be Ф33mm, and the corresponding micrometer scale is 3. Install the Ф33mm mold on the mold base, rotate the micrometer scale to 3 places, peel the rubber tube and assemble it with the joint. After the crimping is completed, the outer diameter of the connector jacket is measured to be the crimped value 33.5mm in the crimping parameter table, and then the crimping is completed. If the outer diameter does not match after crimping, trim the micrometer and crimp a hose. When crimping the hose joint: Too much crimping size, the rubber layer in the hose is crushed, resulting in oil leakage; too small crimping size, causing oil leakage and being flushed out of the joint by hydraulic pressure. Be sure to grasp a reasonable degree of crimping, based on the shrinkage of the inner hole of the connector core, the compression of the national standard connector is 0.1~0.4mm, and the compression of the ordinary connector is 0.1~2mm. Due to the different manufacturers of hoses and joint jackets, for example, most hose manufacturers in the north use GB standards, the south uses 602 standards, and foreign SAE standards. The spec

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2021-03

How to make and install hydraulic hose assembly correctly

 release time : 2021-03--24  Traffic : 0

Correct Assembly Installation Install the hose in a corred way is very important,it will affict the hose’s appearance and cost a lot while it is too long, but if the hose is too short, it cannot flex while being crushed. Both too long and too short can bleak down the hose. So pay more attention to the following guides before you install the assembly: 1.Hose should not be twisted. Hose is weakened when installed in twisted position. Also pressure in twisted hose tends to loosen fitting connections. Design so that machine motion produces bending rather that twisting. 2.Since hose may change in lenth from +2% to -4% under the surge of high pressure, provide sufficient slack for expansion and contraction. 3.Don’t use any clamps at the inflexion so as it can move freely. 4.Choose right angle fittings to avoid too small bending radius and excess force. 5.Hose bending radius should be as big as possible when it is in motion. 6.Reduce friction:avoid hose touching the object directly or farway from the object. Technical Instruction There are many factors which can affict the usage condition of hose assembly, use the hose assembly and hose fittings in a correct way can ensure its reliability and economical efficiency. These factors are following: 1.Hose Dimension The selection of hose inside diameter must be correctly made,if the hose inside diometer is too small. It will speed up the medium in the pipeline 2.Working Pressure The dynamic working pressure in this catalog refers to the allowable maximum pressure in condition of continuously working. According to the safety modulus of hydraulic hose ruled by international stangard, we recommend that the working pressure is one forth of the minimum blast pressures. 3.Impact Pressure&Fatigue Life-span After determining the maximum system pressure for a hydraulic system hose selection can be made. For the hydraulic system’s pressure always be dynamic, there often appears an impact pressure the maximun impact pressure is much higher than the maximum system pressure.To be luckily, there is a overfall valve in every hydraulic system, so high impact pressure cannot affect the fatigue lifespan seriously. As for hydraulic system whose impact pressure appears very frequently, we advise you choose the special hydraulic hose which is able to endure the high impact pressure. 4.Temperature Range User must ensure that the temperature is in an allowable range of hose,if exceeding this range, the life-span of hose will be shorten, and the copacity to endure pressure will get down if the working condition temperature keep too high or too low in a long time, we advice you use the hose spring guard. 5.Chemical Compatibility If use special hydraulic medium, user should ensure the material of hose inner side and cover, the hose fittings and O-ring can compatiable. With the special hydraulic medium. 6.Bending Radius Pay more attention to its minimun benging radius when install the hose assembly, if the bending radius is smaller than the minimum one. The capacity of enduring pressure will get down and the life-span of hose will be shortened. 7.Friction We advised you use a soring guard if the hose assembly is always in the condition of touching and making friction with hard object.

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2021-03

Solution to the failure of the inner layer of the high-pressure hose

 release time : 2021-03--23  Traffic : 0

Solution to the failure of the inner layer of the high-pressure hose 1. Hard layer in the rubber tube, cracks: Because the plasticizer is added to the rubber product, the plastic tube has elasticity. When the hose is under high temperature and high pressure, the hose will overheat and the plasticizer will overflow. In addition, if the oil passing through the cylinders, valves or other components of the system is overheated, a greater pressure drop will cause the oil to decompose, resulting in oxidation and hardening of the hose layer. In this case, first check whether the working temperature of the hydraulic system is normal, whether the valve is throttled, whether the suction pipe of the pump is smooth, etc. After removing all the factors that may cause the oil temperature to rise and oil decomposition, the hose should be checked. If only the hose under the rupture of the hard rubber and the top of the well are maintained, it means that the hose is ruptured when over-squeezed. 2. The inner layer of the hose is severely deteriorated and obviously swelled: the inner layer of the hose is severely deteriorated. The severe swelling is due to the use of hydraulic oil over time or oxidative deterioration of dirt in the hydraulic system. The hose is chemically deterio The rubber in the oil shattered. If this happens, check the physical and chemical indexes of the hydraulic oil, and check whether the material compatibility and working temperature of the system fluid and hose glue meet the standards.

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2021-03

How to identify the pros and cons of the hose crimping machine

 release time : 2021-03--22  Traffic : 0

How to identify the pros and cons of the hose crimping machine To identify the pros and cons of the hose crimping machine, we can use the methods of one look, two listen, and three measurements to identify: 1. Look: Observe visually whether the hydraulic fittings and electrical components selected by the pipe locking machine are brand-name products or are produced by regular manufacturers; whether the circuit configuration is regular; whether the design of the oil station pipeline is reasonable; whether there is oil leakage at the connection. If the above passes the visual inspection, you can proceed to the next step. 2. Listen: turn on the device after plugging in the power supply, and listen to whether the device is running normally. If there is abnormal noise, it is often caused by the installation coaxiality of the motor and the oil pump. Another possibility is caused by the unreasonable selection of the oil pump displacement and pipe diameter, and the quality of the selected motor or oil pump. Not very well caused. 3. Measurement: Finally, the main parameters of the equipment are measured 3.1 Keep the equipment in a dry running state, touch each module block with your hand, and there should be no jitter in the hand, otherwise it will be regarded as a substandard product. 3.2 Mount the equipment on the mold, crimp a sample joint, measure the crimp joint with a caliper or a micrometer, the roundness and taper should be buckled within 0.1mm, which is considered excellent. 3.3 Mold base hardness and mold hardness are also the key to the normal use of the equipment in the future. Customers can request manufacturers to use a desktop or portable hardness tester to test the mold base or mold. When the hardness of the mold base is lower than Rockwell HRC60 and the mold hardness is lower than Rockwell HRC50, it will affect the withholding quality of the hose. 3.4 The last is to inspect the eight-petal uniform indexing of the mold base of the equipment and the flushness of the mold. Good equipment will specifically control and adjust these two parameters, while some low-quality equipment does not control the above two parameters.

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2021-03

What is the role of the oil seal for the tube crimping machine

 release time : 2021-03--20  Traffic : 0

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2021-03

Crimping machine operating procedures

 release time : 2021-03--19  Traffic : 0

Crimping machine operating procedures 1. The operator must operate in accordance with the process regulations. 2. After the machine stops using, the power supply must be cut off. 3. When changing the mold, it must be done after the shutdown. 4. The joint surface of the mold seat and the mold should be kept clean, and there should be no hard objects such as metal shavings. 5. Pour lubricating oil on the inclined surface of the mold base before starting the machine. 6. The positioning screws must be tightened before installing the module. 7. The pressure regulating valve must be adjusted under the specified pressure. 8. It is strictly forbidden to reach inside when working. 9. The electrician safety regulations must be observed when inspecting and repairing electrical parts.

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2021-03

Crimping machine

 release time : 2021-03--18  Traffic : 0

Crimping machine The crimping machine is a kind of hydraulic equipment used to crimp the pipe assembly. It applies the shrinking force to the matched metal joint through the mold of the crimping machine, and firmly crimps the metal joint on the matched high-pressure oil pipe for construction machinery or automobile. Brake pipes, oil pipes, air conditioning pipes, power pipes. The crimping machine is suitable for the crimping of various mechanical high and low pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, oil pipes, gasoline supply pipes, as well as construction accessories and daily hot water pipes. It is widely used Vehicles, construction machinery, hydraulic machinery, welding and cutting equipment and other industries

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2021-03

How to troubleshoot high-pressure hose oil leakage

 release time : 2021-03--18  Traffic : 0

How to troubleshoot high-pressure hose oil leakage The hydraulic system is where the blood circulates in the mechanical system. The hydraulic tube can be called a mechanical blood vessel. At work, leakage of hydraulic lines is commonplace. At the same time, the pressure drop caused by the leakage of hydraulic oil has brought us many effects. How to overcome leakage is an inescapable task for every hydraulic pipe manufacturer and user. The hydraulic system is where the blood circulates in the mechanical system. The hydraulic tube can be called a mechanical blood vessel. At work, leakage of hydraulic lines is commonplace. At the same time, the pressure drop caused by the leakage of hydraulic oil has brought us many effects. How to overcome leakage is an inescapable task for every hydraulic pipe manufacturer and user. First of all. Let's talk about the causes of hydraulic pipe leakage: 1. The tube body bursts. The cause of the tube burst is generally that the hose manufacturer has not tested the assembly before leaving the factory; at least there is no root pressure test. It may be random testing. This is not prohibited in industry standards. However, as a user's request, any leakage cannot be tolerated. Therefore, the manufacturer must test the products one by one according to the standard before the products leave the factory. On the other hand, the user believes that the liquid pressure is too high due to mechanical failures during use, which exceeds the pressure that the tube design can withstand. There will also be bursts. For example, dump trucks are seriously overloaded. 2. The pipe joint is leaking. Pipe joints are often used in hydraulic systems, and the proportion of oil leakage accidents is also very high, reaching more than 30% to 40%. The reason for oil leakage in pipe joints is mostly because the processors did not process them according to the drawings and standards. Such as threaded hole processing size, processing accuracy is out of tolerance, etc., once the above situation occurs, it is difficult to cure the oil leakage, and it can only be filled and sealed with liquid sealant or PTFE tape. Other causes of problems with pipe joint components, such as bumps and scratches on the sealing part during galvanizing or transportation, can cause leakage. On the other hand, due to cost reasons; market competition makes connector manufacturers unprofitable. According to the requirements of the national standard pipe joint female and joint body, No. 45 steel is used. The crimping sleeve is made of 20 gauge steel. But limited to buyers bargaining prices too low, and manufacturers are unwilling to abandon customers. As a result, the steel used in the joint is not standard; causing the hose to leak after a period of use. 3. Improper selection of tube body. Different pipes should be used for hydraulic systems due to different working environments. Now hydraulic hoses are mainly divided into rubber hoses and hydraulic resin hoses. The resin tube is a new product. After various demonstrations, the hose is resinized to fully demonstrate the advantages of the product. However, some of the resin tubes have a larger bending radius. The resilience is not good. In addition, high-pressure hoses are divided into oil resistance, temperature resistance, corrosion resistance, etc., which requires designers to select appropriate pipe materials. 4. Reasons for withholding. At present, the products produced by small domestic manufacturers of hose crimping machines have defects such as insufficient automation, low precision, low production efficiency, and poor stability. Especially the manual control of the crimping machine is more likely to cause leakage at the hose joint. But this is not easy to change within a certain period of time. This requires manufacturers to pay more attention to the training and requirements of withholding technicians. 5. Test reason. A hose leak does not necessarily mean that the hose has not been tested. Sometimes tested. However, due to the difference between the test equipment and the working environment of the hose, unexplained failures may also be caused. For example: the pressure on the pressure tester is slow and the pulse force is not enough. The working hydraulic system is very different. Then there is the lack of responsibility of the pressure testers and the uneasy standard test. 6. Reasons for installation. Incorrect hose assembly and equipment assembly are another major cause of leakage. Both the assembly method and the tightening force are strict. Solution: 1. Choose suitable pipes according to the working environment. 2. Purchasing joints strictly according to standards. 3. Improve the assembly method, try to use mechanical assembly and automated assembly. 4. Improve equipment. Improve staff's work quality and sense of responsibility. 5. Test strictly according to the standard, and try to ensure a 100% detection rate. 6. Choose qualified oil. Replace the aging hose in time. of cours

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2021-03

How to maintain the hose crimping machine

 release time : 2021-03--17  Traffic : 0

How to maintain the hose crimping machine Precautions: 1. When crimping, place the fitting in the center of the mold as much as possible, and do not press on the hexagonal nut. 2. Prevent tools and other foreign objects from entering the press head. 3. Every time after the work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in an open state and the spring can be maintained, and the oil cylinder is also in a pressure relief state to extend the life of the oil seal. Maintenance of hose press: 1. The hydraulic oil in the oil tank should be replaced when the time limit specified by the hydraulic oil manufacturer is exceeded, or the oil level gauge should be checked visually. 2. Frequently inject anti-wear lubricant into the moving surface of the mold base. 3. During non-pressing machine working hours, please cover the dust cover to prevent sundries from falling into the mold base.

Operation Method Of Crimping Machine

Maintenance of crimping machine

Installation and debugging of crimping machine

Application of hose crimping machine in greenhouse

How To Increase The Utilization Rate Of Hose Cutting Machine

Precautions For Hose Crimping Machine

The Original Analysis Of the Damage Of The High Pressure Hose Assembly

How To Choose A Hydraulic Rubber Hose?

Common Failures And Cause Analysis Of Hydraulic Hoses

How To Extend The Service Life Of High Pressure Hose?

The influence of hose assembly cleanliness on hydraulic system

How to select hydraulic hose

Cleaning Methods: Fuel Tanks of Construction Machinery

The possible failure of the inner layer of high pressure hydraulic hose and its solution

How to choose a hydraulic hose?

The manufacturer of the crimping machine analyzes the cause of the failure of the hydraulic piping system of the construction machinery

The working principle of hydraulic machinery

Use of crimping machine

Fallos comunes y métodos de solución de problemas de la máquina prensadora de mangueras

Is the tube shrinking machine, crimping machine and beer throat machine the same kind of machine?

How to install and debug the crimping machine

How to repair and maintain the hose crimping machine?

How to make and install hydraulic hose assembly correctly

Solution to the failure of the inner layer of the high-pressure hose

How to identify the pros and cons of the hose crimping machine

What is the role of the oil seal for the tube crimping machine

Crimping machine operating procedures

Crimping machine

How to troubleshoot high-pressure hose oil leakage

How to maintain the hose crimping machine

　The influence of hose assembly cleanliness on hydraulic system