中文字幕 av在线|亚洲三级伦理AⅤ|日韩av免播放器在线观看|日韩精品A片在线播放|中文字幕红怡国产亚洲人人|亚洲幕熟AⅤ无码无码区|一级黄色性爱片免费看|超碰奥门香蕉亚洲性爱精|二级片在线观看视频|中国黄色毛片青青草视频网站

The effect of lower piston and molybdenum - lipid disulfide

The pile hammer produces a lot of heat when used. To ensure the normal operation of the pile hammer, the upper piston must be lubricated manually by adding molybdenum lithium sulfide to the lower piston every one hour according to the requirements of the product specification, in addition to the forced lubrication of the upper piston by the oil pump.

The functions of adding molybdenum-lithium bisulfide are as follows:

1. Reduce the friction between lower cylinder and upper piston;

2. Improve the sealing performance of piston and cylinder;

3. It can play the role of heat dissipation.

If we stick to the above three points, we can effectively extend the life of pile hammer.