drill rod

基本解释

This device is a new kind of drill rod fixture to be used with the rod storage to implement the mechanization of drill rods connection for drill rigs.
该机构是一种新型的接卸钻杆机构，其与贮杆器配合使用可使钻机实现机械化接卸钻杆。
It uses drill rod connector to directly connect the drill rods, so that during the drilling work, it dose not require fixing or dismantling any of the other drilling tools on the Kelly.
采用钻杆联接器直接连接钻杆，在钻进工作时不需要在主动钻杆上再装卸其它钻具。
hbjltk.net
The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and high temperature tempered.
结果表明，碳化物分布不均匀导致调质处理后在钻杆接头中产生“带状组织”。

钎杆
When drill shank is revoluting,the drill rod will wear with the rock,specially the surface of the screw chaser pontes will wear severely,which affect the fatigue life.
钎杆的旋转凿岩过程会与岩石产生摩擦磨损、特别是螺纹连接部分表层会产较大的磨损,对钎杆疲劳寿命产生重要影响。认为在这种服役条件下的疲劳寿命是多载荷共同控制的疲劳寿命。
钻杆