摘要
从成型管形控制、扩径参数控制、焊接应变等方面展开研究,分析了焊接非对称变形、焊缝与母材的长度收缩率变形差异和“噘嘴”等对直缝埋弧焊管直度的影响,并用ABAQUS软件模拟了钢管焊接应变过程造成的直度变化规律。研究表明,采取预应变、“噘嘴”控制及合理的扩径应变率可以获得0.15%L以内的钢管直度,避免了钢管坡口加工、管端切斜、3PE防腐层不均匀或厚度不足等问题的产生。
Studied here in the paper are such aspects as pipe-shaping control during the pipe-forming process,expanding parameter control,and welding strain,etc.Also analyzed are the influences on the straightness of the SAWL pipe,including the asymmetric welding deformation,the differences of the longitudinal shrinkage ratio and deformation between the weld seam and the base metal,and the weld seam"pout"defect,etc.and the regularity of straightness change caused by welding strain process of steel pipe is simulated by the ABAQUS software.The results show that the straightness can be obtained within 0.15%L by means of adopting pre-strain,"pout"control and reasonable expanding strain rate,so as to avoid the problems such as pipe groove processing,pipe end oblique cutting,and uneven 3 PE coating or insufficient thickness.
作者
张志明
刘奋勇
郭金利
李芳芳
马立立
ZHANG Zhiming;LIU Fenyong;GUO Jinli;LI Fangfang;MA Lili(Nanjing Julong Steel Pipe Co.,Ltd.,Nanjing 210061,China;CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd.,Tianjin 110061,China)
出处
《钢管》
CAS
2022年第3期45-49,共5页
Steel Pipe
基金
中国石油集团渤海装备公司科技项目“L450MO钢级高精度高性能SAWL原油海洋管线制造工艺技术研究”(编号F-M01320K2)。
关键词
直缝焊管
直度
预应变
噘嘴
扩径
SAWL steel pipe
straightness
pre-strain
weld pout
expansion
