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The four-column hydraulic press is more convenient to use after the running-in period, but there will be various minor faults, we must distinguish these faults, in order to be targeted for elimination, today we will learn the trick of judging hydraulic faults together.
We also use the method of looking, smelling and asking to diagnose hydraulic faults, listen to the noise, listen to the noise of the hydraulic pump and hydraulic system of the four-column hydraulic press, the relief valve and the sequence valve and other control elements are screaming, listen to the impact sound of the hydraulic cylinder reversing of the four-column hydraulic press workbench, whether the piston has the sound of impacting the bottom of the cylinder, whether the reversing valve has the phenomenon of colliding end cover, pay attention to the abnormal sound of steam turbability and trapped oil, Check whether the hydraulic pump sucks in air, whether there is a serious trapped oil phenomenon, it should be eliminated in time, whether there is a knocking sound caused by damage when the hydraulic pump is running, not artificial knocking, but an abnormal collision of the four-column hydraulic press.
Touch the moving parts of the four-column hydraulic press with your hand, touch the surface of the shell of the hydraulic pump, oil tank and valve components, contact for two seconds and feel hot hands should check the cause of high temperature rise, touch the vibration of the moving parts and pipelines of the four-column hydraulic press, if there is high-frequency vibration should check the cause, when the workbench is moving with light load and low speed, touch the crawling phenomenon with your hand. Touch the tightness of stoppers, microswitches, fastening screws, etc.
Smell, determine whether the four-column hydraulic press oil deteriorates and becomes smelly, and whether the rubber parts are burnt because of overheating, etc., the general hydraulic press will record the failure of the pull down, we should regularly check the fault analysis, repair, check the shift record, and maintenance and repair; Everyone's judgment ability is different, so the results are also slightly different, can rule out the hydraulic failure of the four-column hydraulic press, or find technical personnel to repair the exclusion more assured.