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通过残余应力测定,分析了预热温度、焊后空冷、缓冷和焊后退火热处理对等离子弧堆焊阀门密封面残余应力的影响。还分析了其它等离子弧堆焊工艺因素对堆焊层应力和抗裂性的影响。
The influence of preheating temperature, post-air cooling, slow cooling and post-weld annealing heat treatment on the residual stress of the sealing surface of plasma arc welding valve was analyzed by residual stress measurement. The effects of other plasma arc welding process factors on the stress and crack resistance of overlay were also analyzed.