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CNC lathe hydraulic pump system maintenance
From:Taian Haishu Machinery Co.,Ltd. Updatetime:2016-3-23 10:38:24 Views:
1, the control of oil cleanliness The source of the pollution and harm: Measures of controlling contamination: 2, the control of hydraulic system leakage Hydraulic system leak of main parts and the reasons can be summarized the followin
1, the control of oil cleanliness
The source of the pollution and harm:
Measures of controlling contamination:
2, the control of hydraulic system leakage
Hydraulic system leak of main parts and the reasons can be summarized the following kinds:
1) pipe joint and oil plug, most of the pipe joint leakage occurred in integrated block, valve plate and tubular components and pipe connecting parts, such as when the pipe USES metric thread connection, screw hole centerline is not vertical sealing plane, namely the geometry precision of screw hole and processing dimensional accuracy does not meet the requirements, will cause the combination washer and untight seal leakage.Taper pipe thread connection between screw plug can not be perfectly easy to leak.The above two cases in the event of it is difficult to cure, can only use liquid sealant or ptfe teflon tape to fill the seal.
2) plate valves, stacked valves, etc between faying surface oil is mainly: with o-ring installed knock against, scratch, mounting screw length, strength is not enough, will produce the oil.Solution: in view of the above problems, respectively
3) the cause of hydraulic cylinder oil is more, such as the piston rod surface adhesion of dust mud, salt fog, surface knocked wounded, partial load and other reasons can cause seal damage and failure cause oil leakage.Solution try not to make the hydraulic cylinder under partial load, often wipe the dust on the piston rod, pay attention to avoid knock against, scratch, manage well the cleanliness of hydraulic oil.
4) temperature fever caused more serious leakage phenomenon, can make the oil viscosity drops or metamorphism, make internal leakage increases;Temperatures continue to increase, will cause the increase friction sealing materials tend to expand when heated and accelerate wear, axial rotation or leak sliding parts soon.O-ring thermal aging caused by the expansion and deformation, can't recover after cooling, lose elasticity and failure, gradually produce leakage.
Regular inspection, regular maintenance, timely treatment is the most basic safeguard prevents leakage, reduce failure.
3, the inspection and maintenance of hydraulic system
Check the maintenance requirements of hydraulic system
4, the precautions in the hydraulic system
1) system to work and stop not pressure or not to cut off the control power, the ban on the system for maintenance, prevent casualty accidents.
2) repair the site must be kept clean, dismantle components or loosen the fittings should be cleared before its outer surface dirt, in the process of inspection to timely with clean cover expose all sealed, spilling prevent pollutants in system, are not allowed to in the overhaul of the field, the construction and welding operations.
3) repair or replace components must be kept clean, no sand, dirt, slag, etc., can rinse first, then install.
4) replacing the seals, are not allowed to use sharp tool, do not touch seal or work surface.
5) removing, decomposition hydraulic components should pay attention to the direction of the parts is disassembled and sequence and properly kept, shall not be lost, don't put them finish of bruising.Component assembly, the parts must be clean.
6) when installing component, the tight force wants even, appropriate to prevent deformation caused by body, valve core is jammed or joint leakage.
7) working liquid in the tank to replace or supplement, the new oil by high precision filter oil vehicles must be filtered into the tank.Working liquid brand must conform to the requirements.
8) are not allowed on the accumulator shell welding and machining, improper maintenance can cause serious accidents.If found that the problem should be returned to the factory repair in time.
9) after completion of maintenance, need to repair parts for confirmation.Right after adjusted by hydraulic system debugging section content, and watch repair parts, after confirm the normal, can be put into operation.
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