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介绍了反应堆压力容器下底圆中子测量管的焊接工艺。基于某制造厂发生的该焊缝相关的下底圆J型坡口隔离层堆焊预热质量问题,分析了预热、层间温度等焊缝质量影响要素及该质量问题的处理方案,为今后类似问题的处理和提高J型坡口隔离层的堆焊质量提供参考。
The welding process of lower round sub-neutron measuring tube of reactor pressure vessel is introduced. Based on the preheating quality of J-groove bellow of lower bottom circle related to the weld occurred in a certain manufacturing plant, the influencing factors of preheating and interlayer temperature and other quality problems and the treatment scheme of the quality problems are analyzed Future treatment of similar problems and improve the quality of surfacing J-type groove insulation provide a reference.