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分析管道对接环焊残余应力产生机理与分布规律 ,介绍了调整和改善焊接残余应力分布的工艺方法 ,通过降低管道内表面残余拉伸应力值 ,甚至使其产生压缩应力 ,可有效地提高管道抗应力腐蚀开裂性能。
The mechanism and distribution rule of residual stress in pipe butt welding are analyzed. The process of adjusting and improving the welding residual stress distribution is introduced. By reducing the residual tensile stress on the inner surface of pipe and even compressing it, the pipeline resistance Stress corrosion cracking properties.