反应堆压力容器不锈钢堆焊层剥离问题分析及工艺控制
Analysis on Disbonding of Stainless Steel Overlay for Reactor Pressure Vessel
- 2023年53卷第10期 页码:109-114
DOI: 10.7512/j.issn.1001-2303.2023.10.17
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朱坤,吴义党,邹国伟.反应堆压力容器不锈钢堆焊层剥离问题分析及工艺控制[J].电焊机,2023,53(10):109-114.
ZHU Kun, WU Yidang, ZOU Guowei.Analysis on Disbonding of Stainless Steel Overlay for Reactor Pressure Vessel[J].Electric Welding Machine, 2023, 53(10): 109-114.
反应堆压力容器(简称RPV)属于核电厂的心脏设备,长期在高温、高压、强腐蚀和强辐射的环境下运行。不锈钢堆焊层剥离属于RPV制造中的重大问题,处理代价大。选取华龙一号RPV制造过程中发生的主螺栓孔堆焊和顶盖密封面堆焊层剥离案例,对不锈钢堆焊层剥离的影响因素进行分析研究,提出了预防不锈钢堆焊层剥离的工艺控制关键点,包括:焊接方法、焊接位置、焊接参数、搭接量、预热、焊接工位及操作规范,为后续华龙一号RPV的制造提供了技术积累和工程经验。
The reactor pressure vessel (RPV) belongs to the heart equipment of nuclear power plants,which operates in the environment of high temperature, high pressure, strong corrosion and strong radiation for a long time.The stripping problem of stainless steel overlay is a major problem during RPV manufacturing process, and high cost to handle.In this paper, two stainless steel overlay stripping cases were selected to analyse, which appeared during main bolt holes and top cover sealing surface manufacturing process of “HPR1000” RPV. Through the analysis of influencing factors,the author summarizes 7 key points for welding process in the prevention of overlay stripping, including welding method, welding position, welding parameters, overlap amount, preheating, welding station and operation specifications. This provides a valuable accumulation and engineering experience for the subsequent manufacturing of “HPR1000” RPV.
反应堆压力容器堆焊层剥离工艺控制
reactor pressure vesseloverlaydisbondingprocess control
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