CNC bending machine failure or to prevent the main, some customers in the purchase of hydraulic bending machine after just blindly use, never maintenance will not pay attention to avoid the hydraulic bending machine failure factors, so they use the hydraulic bending machine failure rate is relatively high.
The failure of the pressure system is generally due to three reasons: pollution, air entry and overheating.
1. Ensure that the hydraulic oil of CNC bending machine is clean and reduce pollution
The hydraulic oil of CNC bending machine should be correctly selected to prevent the intrusion of dirt and impurities in the hydraulic oil of CNC bending machine. The hydraulic oil is both the medium of the hydraulic system and the lubricant, so it has a great impact on the cleaning of the oil and the performance of the system, and the reliability and service life of the hydraulic components. The main causes of hydraulic oil pollution of CNC bending machine are: first, the external hydraulic actuator is dirty, and debris enters the hydraulic system; Second, no filter is used when refueling; Third, the container used is unclean; Fourth, when checking the oil level, impurities enter; Fifth, the seals with serious wear and damage can not be replaced in time; Sixth, impurities such as iron filings generated during inspection and repair are not cleaned up; Seven is improper storage of oil, debris into the tank, such as water. In the process of use and inspection and maintenance, remember to pay attention to the above problems, you can reduce the occurrence of hydraulic system failure.
2. To prevent the CNC bending machine hydraulic oil mixed with air, resulting in cavitation phenomenon
The compressibility of hydraulic oil is very low, but the compressibility of air is large, if the hydraulic system contains a small amount of air, the system performance is greatly affected. The air dissolved in water, at low pressure, will overflow and produce bubbles, forming cavitation phenomenon; If the pressure is high, under the impact of the pressure, the bubble quickly bursts, producing explosive noise, while releasing a large amount of heat energy, resulting in the destruction of the components and the heating of the oil. In order to prevent air from entering the hydraulic system, the following points must be done: first, the return pipe is inserted below the oil level; The second is to prevent joints from loosening and seals from being damaged; The third is to avoid incorrect refueling methods when refueling to the fuel tank; The fourth is to avoid the suction resistance caused by the hydraulic pump inlet fine filter, and the dissolved gas can not be separated.
3. Prevent excessive hydraulic oil temperature of CNC bending machine
The temperature of the hydraulic oil of the CNC bending machine is generally controlled between 40 ° C and 😯 ° C, if it is above 80 ° C for a long time, it will cause the viscosity of the oil to be very low, easy to leak, resulting in high temperature of the hydraulic components, resulting in its short life. Therefore, in the choice of radiator to fully consider all aspects of the factors. Oil viscosity selection is also, to consider, high viscosity increases the energy loss of oil flow, low viscosity will increase leakage, so in use should pay attention to and regular inspection, to prevent the oil temperature is too high, and regularly filter the hydraulic oil of the CNC bending machine, regular inspection, which can ensure the workability of the hydraulic system, but also reduce the wear and corrosion of hydraulic components, Extended the life of the hydraulic system.