How to maintain a hydraulic wrench.Air impact wrench

　　1. During the whole process of loading, unloading, handling and application management methods, the hydraulic wrench must be prevented from dropping the hammer to prevent damage to the hydraulic wrench.

　　2. The grinding fluid of the hydraulic wrench is hydraulic oil, and alcohol and water cannot be used as the grinding fluid of the hydraulic wrench. Naturally, it must be clean, pure hydraulic oil can be used for hydraulic wrenches.

　　Hydraulic wrenches are very fond of cleaning, especially there should be no sludge in the oil inlet and oil outlet;

　　Figure 4. If you know that you won't be using hydraulic wrenches for a long time, you must prepare for corrosion in advance. The common anti-rust treatment method is to brush glycerin on the hydraulic wrench to carry out anti-rust treatment, and then store the glycerin in the original wooden box and put it into the drying room at the appropriate temperature.

　　5. In order to better avoid the occurrence of contamination and environmental pollution management, be sure to replace the connecting head of the connecting pipe in the hydraulic control system with an external thread plug.

　　6. The compressive strength of the high-pressure hose decreases after long-term use, and a large number of high-pressure hoses must be replaced after a period of application.

　　Before using the hydraulic wrench, you must read the instructions carefully to prevent accidental injury.

　　8. When torque, be sure to strictly control the pressure. For better everyone's safety, we cannot apply overvoltage.

　　Difficult problems of hydraulic wrenches What are the common causes of failures?

　　1. The hydraulic wrench has been used for a long time, damaged, the parts are not upgraded immediately or the maintenance is not timely, resulting in no driving force or no operation, no driving force or no operating condition, resulting in corrosion or loosening of the hydraulic wrench. During the work, it is found that the hydraulic wrench is lacking or inconvenient, and cannot meet the production and manufacturing regulations, which is likely to seriously damage the ratchet and ratchet mechanism parts.

　　2. The oil leakage and pressure are not very good, because the cylinder sealing ring is deformed due to high toughness work, the oil leakage and pressure are not good, or the oil temperature is high during the long-term work of the pump room, and the wrench head leaks oil. The key factors are the unreasonable operation of the hydraulic wrench, the unscientific application of the wrench, the long running time or the excessive work intensity, which exceeds the level gauge. The hydraulic wrench is damaged due to the load of the pressure wrench, resulting in oil leakage or ineffective pressure.

　　Ways to increase the service life of hydraulic wrenches:

　　1. The operation managers must carry out training and evaluation through operation to clarify their work ability and whether they can take the job, and then they can operate.

　　2. Use of hydraulic oil: choose wear-resistant hydraulic oil, the relative density of the hydraulic oil is 0.884 g/cm2, the opening flash point is 255 C, the total flow point is -9 C, the viscosity is 68 cm2/s (40 C) and 8.8 cm2/(100C). The viscosity coefficient is 102. The hydraulic oil can stabilize the hydraulic transmission system of the hydraulic wrench, reduce the damage of oil temperature to the viscosity, improve the corrosion resistance and corrosion resistance of the system software, and benefit the sealing performance of the hydraulic cylinder of the hydraulic wrench.

　　3. Automatically control the oil temperature of the system: the system software allows the oil temperature A to be as low as 25°C, and the operating temperature is 35-45°C, so the system is not good. When a certain value is exceeded, the system software should be checked immediately.

　　4. Immediately check and find problems: when there are common faults in the hydraulic transmission system (such as abnormal fitness exercise, unstable steam pressure, system software vibration, oil temperature rises too fast, etc.), the cause should be analyzed immediately. Fault detection, hydraulic wrench is prohibited In the work with failure, it is very likely to cause a major safety accident.

　　5. Do the inspection on time and tighten the connecting tee to avoid loosening and oil leakage.

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