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There are wear and frettage in the inner hole rocker arm and column of Z32K radial drill after long time used. Z32K摇臂钻床在长时间使用后,立柱与摇臂内孔都存在着磨损或擦伤问题,利用超高分子量聚乙烯新材料,采取技改措施,对摇臂钻床进行镶套修理,效果良好。