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本文介绍了压力容器焊接残余应力的存在状况,通过实验,证明了焊接残余应力降低了容器的开裂压力和爆破压力。本文还论述了焊接残余应力在压力容器缺陷评定中应如何取值。
This paper introduces the existence of welding residual stresses in pressure vessels. The experiments show that welding residual stresses reduce the cracking pressure and burst pressure of the vessels. This article also discusses how the welding residual stress should be evaluated in the pressure vessel defect assessment.