摘要
针对X80ф1 219 mm×18.4 mm螺旋缝埋弧焊管外焊缝浅层出现的横向裂纹,结合螺旋缝埋弧焊生产工艺的特点,分析了裂纹的产生主要是由于焊缝中心低熔点物质和焊缝熔池拉应力所致,并提出了几点避免横向裂纹产生的措施。
Aiming at transverse cracks which appeared in shallow layer of outside weld of 1219 mm×18.4 mm,X80 SAWH pipe,combined with production process of SAWH pipe,it pointed out material of low melting and tensile stress of weld pool are the main reason caused cracks,and proposed some measures to avoid causing transverse weld.
出处
《焊管》
2010年第8期10-13,共4页
Welded Pipe and Tube
关键词
螺旋埋弧焊管
横向裂纹
拉应力
焊缝成形系数
SAWH pipe
transverse crack
tensile stress
weld seam forming coefficient
