管线钢拉伸试验中异常屈服强度研究与分析  

Research and Analysis of Abnormal Yield Strength During Tensile Test for Pipeline Steel

作　　者：杨专钊[1] 李云龙[1] 邓波[1] 李记科[1] 王长安[1] 张鸿博[1] 严长亮[1] 党民[1] 杜伟[1] 

机构地区：[1]中国石油天然气集团公司管材研究所,西安710065

出　　处：《焊管》2009年第4期51-53,共3页Welded Pipe and Tube

摘　　要：针对国内某制管厂在对管材进行拉伸试验时屈服强度普遍偏高问题进行了深入调查分析,结果显示:试验机系统误差是拉伸屈服强度和抗拉强度偏高的原因之一;此外,误把规定非比例延伸强度R视为管线钢屈服强度R,是屈服强度普遍升高的主要原因。Through investigation and analysis into a pipe manufacturer in China, there existed a little higher in yield strength values at larger. The test results showed the system error of the test machine was one of the main reasons which led to the higher tensile and yield results. Besides, the other reason was the test system mistake the stipulated non-proportional extension strength Rp0.5 as pipeline steel yield strength Rt0.5.

关 键 词：管线钢 拉伸试验 屈服强度 规定非比例延伸强度 规定总延伸强度 

分 类 号：TG113.25[金属学及工艺—物理冶金]