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Causes of crawling failure when the slider of the four-column hydraulic press moves down slowly
Add Time: 2019-10-17 13:13 Source: unknown Author: Forging Branch letter
Under normal operating conditions, the four-column hydraulic machine should be very stable, whether it is going up or down, it should be carried out slowly and steadily. If the slider of the four-column hydraulic machine is crawling down during slow down, what is the reason How about it? There are two main reasons for the creep failure, and the specific reasons are as follows.

1. Due to the presence of gas in the hydraulic system, poor sealing of the suction port of the oil pump or blockage of the oil filter, or the lack of oil in the hydraulic oil tank, the oil filter has not been covered, etc. It is a more common reason that the work entering the hydraulic system contains gas and causes the slider to crawl. For such failures, gas can be eliminated and prevented from entering the hydraulic system. Usually, you can also loosen the oil inlet pipe at the height of the main cylinder, make the main cylinder reciprocate up and down several times, and then tighten the joint of the oil pipe.

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2. The accuracy of the column and guide rail of the hydraulic press has not been adjusted properly, and it can be solved by recalibrating the accuracy.

3. The lack of lubricating oil in the column of the four-column hydraulic press is also one of the main reasons that cause the slider to crawl when the slider descends slowly. You can adopt methods such as adding oil lubrication to the column to solve such problems.