焊管2017，Vol.40Issue(11)：47-51,5.DOI:10.19291/j.cnki.1001-3938.2017.11.010
X80M钢Φ1219 mm×18.4 mm螺旋埋弧焊管导向弯曲不合格原因分析
Analysis of Unqualified Guide Bending Test of X80M Φ1 219 mm× 18.4 mm SSAW Pipe
谷海龙 1陈楠 1王海生 1谢晓东 1刘湘军 1马相军1
作者信息
- 1. 渤海装备华油钢管公司,河北沧州062658
- 折叠
摘要
Abstract
According to unqualified guide bending test of X80M Φ1 219 mm×18.4 mm SSAW pipe in production, property, thermal simulation, welding parameters and microstructure were analyzed for unqualified reasons. The results showed that softening of heat-affected zone was more likely to occur on heavy-wall SSAW pipe production; parent metal strength of wiled sheet should not be too high; because of inclusions on the edges of wiled sheet with bending stress, brittle fracture zone was easily formed and finally leaded to crack. The above methods could prevent the defect, including controlling heat input of welding,setting reasonable strength range and adjusting edge milling parameters.关键词
X80M/厚壁螺旋埋弧焊管/导向弯曲试验/热影响区软化/板边夹杂物Key words
X80M/heavy-wall SSAW pipe/guide bending test/softening of heat-affected zone/inclusion of plate edge分类
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谷海龙,陈楠,王海生,谢晓东,刘湘军,马相军..X80M钢Φ1219 mm×18.4 mm螺旋埋弧焊管导向弯曲不合格原因分析[J].焊管,2017,40(11):47-51,5.
