Common failures and preventive measures of cutting machine hydraulic system
Due to the difference in the flow velocity of various parts during the flow of the transmission medium, there are different degrees of internal friction inside! An increase in temperature may cause internal and external leakage, which reduces its efficiency. However, a higher temperature will cause the expansion of the internal pressure of the hydraulic oil to increase, so that the control action cannot be well transmitted.
① use high quality hydraulic oil
② Arrange hydraulic pipes to avoid elbows
③ Use better hydraulic fittings such as pipe fittings and joints! Heating is an inherent feature of hydraulic systems that cannot be eliminated.
The leakage of the hydraulic system is divided into internal leakage and external leakage. Internal leakage refers to leakage that occurs inside the system, for example, leakage on both sides of the piston and between the spool and valve body. External leakage refers to leakage that occurs in the external environment.
Solution, ① Check whether the joint of the pipe fitting is loose
②Use good quality seals.
The impact force generated by the high-speed flow of hydraulic oil in the pipeline of the hydraulic cutting machine and the impact generated during the opening and closing of the control valve are the causes of vibration. Excessive vibration amplitude will produce error indications of the system's precision instruments and cause system failure.
Solution, ① fixed hydraulic pipeline
②Avoid sharp bends in the pipe fittings and frequently change the hydraulic flow direction. The hydraulic system should have good vibration reduction measures, and also avoid the impact of external vibration sources on the hydraulic system.