摘要
旋挖钻杆在地下施工过程中不仅受到钢丝绳的拉力,而且受到旋挖钻机上动力头的压力和扭矩,因此钻杆的工况受力非常复杂,施工现场经常出现钻杆扭曲或断杆等现象。为避免或减少以上现象的发生,旋挖钻杆在设计选材时考虑国内的27SiMn和35CrMo两种高强度的无缝合金钢管,因此其焊接性是首要解决的难题。分析对比两种材料的焊接性及工艺参数。
The kelly bar of rotary driling rig is not only pulled by the steel rope, but also influeced by the pressure and torque of the power head in the underground construcition.So the force is very comples.Drill kelly bar is often twisted or btoken.ln order to avoid or reduce the occurrence of the above phenomenons, it is considering of domestic 27SiMn and 35CrMo high-strength seamless alloy steel tube in the design of the kelly bar.But welding is top priority of solving the problem.In this essay,the welding process parameters of these two above-materials would be compared and analysed.
出处
《电焊机》
北大核心
2012年第12期102-103,共2页
Electric Welding Machine
