2010-03-11 10:53:09 阅读5 评论0 字号:大中小
译文:
1.所有零件应小心地进行清洗,用吹干或用鹿皮擦干。 2.装合后的试验: (1)密封性能试验:用压力为0.2-0.4Mpa的压缩空气与多路换向阀出口接通,换向阀的其余孔均用螺塞堵住。再将多路换向阀浸入油中20-30mm,打开空气阀门,将换向阀杆置于两个极限位置。多路换向阀表面不允许有漏气现象。如果发现有漏气,应在漏气的地方记上记号,然后进行返修。 (2)功能试验:将多路换向阀通入公称压力和流量的压力油,在没有渗漏的情况下,检查操纵杠杆,应能接通任何一个极限位置,并能自动返回中立位置。 在功能试验时,应将所有单元的操纵杠杆向两个极限位置,各接通四次。在第五次接通时,应在极限位置上停止3min,并且操纵杆应能自动返回中立位置。 (3)正确性能检查:检查在所有负载时,换向阀应能否以最小的调速位置,负载油缸能否以最小速度运动。 (4)外部密封性能检查:将各出口压力改为2.5-3Mpa,将进口压力改为20MPa,把各单元阀杆在6-10s的时间内,接通极限位置15次,不允许外部有漏油现象。
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原文:
1. All parts should be carefully carried out cleaning, use dry or dry skins. 2. Fitted together after the test: (1) The sealing performance test: the 0.2-0.4Mpa Pressure of compressed air and multi-way valve connected to exports, the rest of valve holes are blocked with the drain plug. Multi-channel valve and then immersed in oil, 20-30mm, open the air valve, the valve rod placed in two extreme positions. The surface does not allow multi-channel valve leakage phenomenon. If you find a leak should be recorded on the mark where gas leakage and then rework. (2) function tests: The multi-pass valve Nominal pressure and flow into the pressure of oil, there is no leakage in the case, check the control lever, should be able to connect to any on