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本文提出了对等截面焊件组合杆件沿垂直于杆轴线作全截面切断,切片来测定其残残余应力的方法,并介绍其基本原理和测试方法。报告了运用此法对口84×6、口144×8两种焊接方管的测试结果,并对运用切条法[1]的实测结果进行了对比。对比结果表明,这两种方法简便、迅速,除切断法精度有待改进外,切片法完全满足工程实用的精度要求。
This article proposes a method for determining the residual stress of a composite section welded member with a full section cut perpendicular to the axis of the rod and slicing to determine the residual stress, and introduces the basic principle and test method. The test results of the two types of welding square pipes with mouth 84×6 and mouth 144×8 using this method were reported, and the actual measurement results using the cutting strip method [1] were compared. The comparison results show that the two methods are simple and rapid. Except that the precision of the cutting method needs to be improved, the sectioning method fully meets the practical precision requirements of the project.