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本文介绍的绳索取芯钴杆是我国推广地质岩芯钻探技术的关键工具之一,采用等离子弧来焊接这类钻杆是国内首创。文中对焊接工艺作了简要介绍,列举了焊接程序及参数;给出了焊接接头性能及钻杆的野外试钻结果;介绍了钻杆同轴度的检查方法。
This article describes the rope coring cobalt rod is China’s promotion of geological core drilling technology, one of the key tools, the use of plasma arc to weld such drill pipe is the first domestic. In this paper, the welding process is introduced briefly. The welding procedure and parameters are listed. The performance of the welded joint and the field drilling test result of the drill pipe are given. The inspection method of the drill pipe coaxiality is introduced.