【摘要】 对旋挖钻机钻杆失效形式进行了简要分析,针对性地介绍了旋挖钻机摩阻式钻杆的方案设计和制造工艺,以及生产过程中的注意事项。更多还原

【Abstract】 The rotary drill rod failure is analyzed.The alternative design and manufacture techniques of friction drilling pipes of rotary drills was introduced.The attentions should be paid during manufacture were mentioned.更多还原