焊管2016，Vol.39Issue(6)：53-57,5.DOI:10.19291/j.cnki.1001-3938.2016.06.012
X100螺旋埋弧焊管反弯断裂失效分析
Analysis of Root Bend Fracture Failure for X100 SAWH Pipe
常永乐 1黄晓辉 2权勇3
作者信息
- 1. 西安石油大学 材料科学与工程学院，西安 710065
- 2. 宝鸡石油钢管有限责任公司，陕西 宝鸡 721008
- 3. 国家石油天然气管材工程技术研究中心，陕西 宝鸡721008
- 折叠
摘要
Abstract
Aiming at the unqualified root bend problem that occurred in trial production of X100 grade Φ1 219 mm×14.8 mm SAWH pipe, the fracture failure reason of three typical cracked specimens was carried out by the methods of metallographic microscope, scanning electron microscope and energy spectrometer tests. The results showed that the root bend failure mainly generate in heat affected zone, the weld fusion line area and the weld fusion line, the main reason is the abnormal massive M/A structure in crack initiation position of welded joint, as well as some welding defects, including inclusions, pores and so on, become the crack source induced fracture, leading to root bend and cracking.关键词
螺旋埋弧焊管/X100管线钢/弯曲试验/断裂/失效Key words
SAWH pipe/X100 pipeline steel/guide bending test/fracture/failure分类
矿业与冶金引用本文复制引用
常永乐,黄晓辉,权勇..X100螺旋埋弧焊管反弯断裂失效分析[J].焊管,2016,39(6):53-57,5.
