无缝钢管定径过程中的压下量和温度对残余应力分布的影响  

Effect of sizing measure and temperature on residual stress of the seamless pipe in the sizing process

作　　者：李连进 胡广大[2] 

机构地区：[1]天津机械工程学院,天津300134 [2]北京科技大学信息工程学院,北京100083

出　　处：《塑性工程学报》2007年第5期111-115,共5页Journal of Plasticity Engineering

基　　金：天津市自然科学重点基金资助项目(043804011)

摘　　要：为消除无缝钢管的轧制和热处理所产生的尺寸和椭圆度误差等缺陷,一般要采用定径工艺。而作为无缝钢管制造最后生产环节的定径工艺决定了管体的尺寸和几何形状,同时也影响其力学性能。为此,文章研究了满足无缝钢管的尺寸和椭圆度要求下的定径的压下量和温度与残余应力分布的关系,进行无缝钢管定径时的金属流动规律分析,以便减小定径工艺产生的残余应力,获得最佳的定径效果,提高无缝钢管的机械性能,为定径工艺的制定提供理论依据。The sizing process must be taken in order to eliminate the size tolerance and roundness one after the seamless pipe roiled and heat treated. As the last procedure of producing the seamless pipe, the sizing process plays a key role in not only controlling the pipe size and geometry shape, but also affecting its mechanical performance. Therefore, to meet the tolerance requirements, systematic investigation has been carried out to find the dependence relationship of distribution of residual stress on the sizing measure and temperature. A detailed analysis thus is performed to understand metal flow on the sizing deformation process. This analysis will aid to reduce the residual stress of sizing process, achieve an optimized sizing technology and enhance the mechanical performance. The analysis results obtained may provide a theoretical foundation for establishing the sizing process.

关 键 词：无缝钢管 定径 残余应力 机械强度 

分 类 号：TG174.442[金属学及工艺—金属表面处理]