First, preventive maintenance work (a), hydraulic part 1. The lack of hydraulic oil quantity will lead to oil temperature easy to rise, the air is easy to dissolve into the oil and affect the normal operation of the oil quality and hydraulic system, the oil is usually insufficient For oil or repair loss, for this reason, you should pay attention to check the leaked parts, replace the worn seals early, tighten the loose joints, etc. After maintenance, check the oil volume of the fuel tank and replenish it in time.
2. Hydraulic oil temperature The ideal working temperature of the hydraulic system should be between 45 °C and 50 °C. The reason is that the hydraulic system is designed according to the viscosity of a selected pressure oil, but the viscosity will change with the temperature of the oil. In turn, it affects the working components in the system, such as oil cylinders and hydraulic valves, which reduces the control accuracy and response sensitivity, especially for precision injection machines. At the same time, if the temperature is too high, the aging of the sealing member will be accelerated to harden and break. When the temperature is too low, the processing energy consumption is large, and the running speed is lowered. Therefore, it is necessary to pay close attention to the working temperature of the hydraulic oil. There are many reasons for the high oil temperature, but it is mostly due to the failure of the oil circuit or the failure of the cooling system.
3. Hydraulic oil One of the important properties of oily hydraulic oil is its chemical stability, ie oxidation stability. Oxidation is the main factor determining the effective service life of hydraulic oil. Insoluble materials such as wood tar, sludge and carbon residue generated by oxidation can contaminate the hydraulic system, increase the wear of hydraulic components, reduce various gaps, block small holes, and end up. Causing the hydraulic system to malfunction. The oxidation rate of hydraulic oil depends on many factors such as its own and working conditions. Temperature is one of the main factors. Therefore, it is necessary to use suitable hydraulic oil and regularly check the oxidation degree of hydraulic oil (from the color of oil itself) ), it is absolutely necessary to actively change oil after a certain number of working hours.
4. The oil filter cleaning oil filter plays the role of clean hydraulic oil. Therefore, the oil filter should be cleaned every three months to keep the oil suction pipe unblocked and check the oil filter net for damage.
5. The chiller cleaning chiller should be cleaned once a year, or cleaned according to whether its working capacity is reduced. The internal clogging or fouling of the chiller will affect the cooling efficiency. The cooling water should be soft (no minerals). .
