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How to choose a hydraulic hose?

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.

03-30

2021

How to choose a hydraulic hose?
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 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.

03-29

2021

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

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.

03-28

2021

The working principle of hydraulic machinery
The working principle of hydraulic machinery

Use of crimping machine

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.

03-27

2021

Use of crimping machine
Use of crimping machine

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

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.

03-27

2021

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

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.

03-26

2021

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

03-25

2021

How to install and debug the crimping machine
How to install and debug the crimping machine

How to repair and maintain the hose crimping machine?

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

03-25

2021

How to repair and maintain the hose crimping machine?
How to repair and maintain the hose crimping machine?

How to make and install hydraulic hose assembly correctly

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.

03-24

2021

How to make and install hydraulic hose assembly correctly
How to make and install hydraulic hose assembly correctly
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