Most people will think that under the use of machinery for a long time, the wear of parts is also very normal, if it is the wear of time, it is normal, because it is inevitable. But we sometimes find that the speed of wear between the parts is very fast, then, at this time we should consider the problem of failure, today we will understand what is the reason for the wear of the parts of the four-column hydraulic press?
1, electromagnetic reversing valve spool wear or deformation, may affect the valve leakage, thereby reducing its work efficiency, dirt is easier to enter the gap or deformation, resulting in mechanical blockage of the valve spool. If the gap between the spool and the valve hole is large, pressure shock may occur.
2, the wear of the pilot valve will make the valve unstable or even unable to adjust the pressure. The pilot taper valve or pilot small ball valve is not tightly sealed due to wear and cannot be properly adjusted.
3, one-way throttle valve (one-way throttle) part of the check valve wear, the seal is not strict, part of the oil flow will flow out through the check valve, affecting the speed sensitivity.
