焊管2011，Vol.34Issue(1)：25-29,5.
X120管线钢焊接试验及分析
Welding Test and Analysis of X120 Pipeline Steel
杜伟 1娄琦 2王长安 1杨专钊1
作者信息
- 1. 中国石油集团石油管工程技术研究院,西安,710065
- 2. 北京隆盛泰科石油管科技有限公司,北京,100101
- 折叠
摘要
Abstract
The influence of linear energy on HAZ toughness was studied by means of welding thermal simulation. The best matching scheme for welding materials was determined through matching tests of 3 kinds of different welding wire and welding flux. Using determinate parameter to carry out welding for X120 pipeline steel formed by JCO process, and analyzed steel pipe properties after welding. The results showed when the linear energy is 35 kJ ·cm- 1, HAZ has the highest toughness value;But the present welding materials hardly achieve over-matching welding. In future special X120 welding materials should be developed. The common pipeline steel has good bend deformation ability,while the crack occurred in X120 steel pipe under bend axis diameter with 8 times thickness. The reason was that CGHAZ gains in weld obviously growed big and existed large quantity M/A in structure which was distributed in long strip,it led to CGHAZ brittleness of X120 steel pipe.关键词
X120管线钢/焊接工艺/焊接热模拟/焊材Key words
X120 pipeline steel/ welding process/ welding thermal simulation/ welding materials分类
矿业与冶金引用本文复制引用
杜伟,娄琦,王长安,杨专钊..X120管线钢焊接试验及分析[J].焊管,2011,34(1):25-29,5.
