目前，国内外地质勘探用高压泥浆泵，多采用往复式。泥浆直接进入缸套，即使是再好的循环泥浆，泥砂的微粒对缸套活塞也会产生严重危害。特别是在覆盖层较厚的地区钻进时，以及用黄土堵漏或遇流砂层和破碎地层时，优质泥浆遭到破坏，就更加剧了缸套活塞的磨损。为了延长缸套活塞的使用寿命，一般途径是选用优质材料，使用先进的加工工 At present, domestic and foreign geological exploration with high pressure mud pump, and more use of reciprocating. Mud directly into the cylinder liner, even the best circulating mud, silt particles will also have a serious impact on the cylinder piston. Especially when drilling in thicker cover areas, and when plugging loess or flowing sand and broken ground, the high-quality mud is damaged, which aggravates the wear of cylinder liner pistons. In order to extend the service life of cylinder piston, the general approach is to use high-quality materials, the use of advanced processing workers