用摩擦焊方法焊接绳索取芯钻杆是合理可行的,它可减少钻杆连接的螺纹数量,提高钻杆的强度和刚度,促进绳索取芯钻进技术的发展。在取得了良好的试验室研究结果的基础上,又对一小批摩擦焊钻杆进行了钻井试验。结果表明,摩擦焊接头性能和装配焊接精度都能够满足绳索取芯钻进的各项试制要求。 It is reasonable and feasible to use the friction welding method to weld the rope core drilling rod, which can reduce the number of threads connected to the drill rod, improve the strength and rigidity of the drill rod, and promote the development of rope core drilling technology. Based on good laboratory results, a small batch of friction welding drill pipe was drilled. The results show that both the performance of friction welding joint and the welding precision of assembly can meet the requirements of trial production of rope coring drilling.