用X射线法测定焊接残余应力,目前仍处于研究阶段。本文通过大量实验证实:只要工件表面处理得当,各项参数选择合理,这种方法是完全可行的,与其他测试方法吻合较好。通过试验得出了沿焊缝线上及垂直于焊缝各截面上的纵向应力与横向应力分布规律,为进一步研究焊接残余应力分布规律,提供了依据。 Determination of welding residual stress by X-ray method is still in the research stage. This paper through a large number of experiments confirmed: as long as the workpiece surface properly, the choice of a reasonable parameter, this method is entirely feasible, consistent with other test methods better. The distribution of longitudinal stress and transverse stress along the weld line and perpendicular to the weld cross-section is obtained through experiments, which provides a basis for further study of the distribution of residual stress in welding.