残余应力对ERW管线管制造过程的影响分析  

Analysis of Influence by Residual Stress on Manufacture Process of ERW Linepipe

作　　者：张曙华[1] 

机构地区：[1]宝山钢铁股份有限公司宝钢分公司钢管厂,上海201900

出　　处：《钢管》2007年第6期25-28,共4页Steel Pipe

摘　　要：通过对残余应力形成过程及原因的机理研究,采用塑性变形和相关性统计分析方法,分析了残余应力对ERW管线管制造过程的影响,并就减少ERW管线管制管过程中的残余应力提出控制措施。认为要避免焊接前带钢的不对称变形和回弹应力的影响,定径和水压试验是较为重要的工序。Based on the research result relating to the mechanism for development of and causes for residual stress, the influence by residual stress on the manufacture process of ERW linepipe is analyzed by means of plastic deformation analysis method and relative statistic method. Accordingly control aetions are proposed in order to reduce the residnal stress as developed in the manufacturing process of ERW linepipe. It is regarded that sizing and hydrostatic testing are both two critical processes to prevent the pre-welding asymmetric deformation and the influence of resilient stress of the steel strip.

关 键 词：高频电阻焊 管线管 包辛格效应 残余应力 

分 类 号：TG457.6[金属学及工艺—焊接]