摘要
介绍了煤矿采掘设备破损螺纹孔的多种修理方法。
The paper introduces various kinds of methods on repairing damaged thead holes of mining and developing equipment in coalmines.
出处
《同煤科技》
2006年第4期24-25,共2页
Datong Coal Science & Technology
关键词
螺纹孔
钻孔
冷装
焊接
thread hole
drilling
cold instalation
welding
