焊管焊接接头拉伸试验相关标准的讨论

焊管常用标准对焊缝接头拉伸试样是否去除焊缝余高要求不一。本文从焊接接头拉伸的实际意义出发,探讨了是否去除焊缝余高及断裂位置对试验结果的影响。不去除焊缝余高的情况,更偏重于焊缝结构的整体强度,而不是严格意义上的焊接接头的抗拉强度。为避免分歧及便于对比,西气东输二线管道工程技术条件中统一规定了焊接接头拉伸试验必须去除焊缝余高,且报告断裂位置。

Discussion on Weld Tensile Tests of Welded Pipe

whether the weld reinforcement is removed for weld tensile test sample,common standards of welded pipe specify inconsistently.From the practical implications,the paper discusses the influence of the test result caused by weld reinforcement and fracture location.Without the removal of weld reinforcement,overall strength of the weld structure is focused on,rather than weld tensile strength in the strict sense.To avoid the differences and facilitate comparison,the technical specifications of the 2nd West-East Pipeline Project specify consistently that the weld reinforcement should be removed for weld tensile test,and the fracture location should be reported.