理化检验：物理分册2012，Vol.48Issue(6)：410-413,4.
DZ55钢级Ф102mm×9.19mm地质钻杆管体断裂原因分析
Reasons Analysis on Fracture of Ф102 mm×9.19 mm DZ55 Geological Drill Pipe Body
张金源 1佟琳 2高伟 1刘箐霖1
作者信息
- 1. 中国石油大学,北京102249
- 2. 西安摩尔石油工程实验室,西安710065
- 折叠
摘要
Abstract
Fracture reasons of a geological drill pipe with grade of DZ55 and size of 102 mm×9.19 mm were analyzed through macro observation,metallographic examination,chemical compositions analysis,mechanical property test and SEM analysis.The results show that there were a lot of spiral scribes and scratches on outer surface of the drill pipe body,which caused stress concentration.At the same time,and material toughness of the drill pipe body was rather low.So cracks generated at the damage positions and finally brittle fracture happened during drilling process of the drill pipe.关键词
地质钻杆/脆性断裂/损伤/韧性Key words
geological drill pipe/brittle fracture/damage/toughness分类
矿业与冶金引用本文复制引用
张金源,佟琳,高伟,刘箐霖..DZ55钢级Ф102mm×9.19mm地质钻杆管体断裂原因分析[J].理化检验：物理分册,2012,48(6):410-413,4.
