秦山核电厂二期扩建工程吊篮筒体焊接变形的分析及其控制

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Analysis and Control of Welding Deformation in Qinshan Nuclear Power Phase Ⅱ Extension Project

National Key Laboratory of Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 610041

摘要: 秦山核电厂二期扩建工程反应堆堆内构件3_#吊篮筒体在制造过程中出现严重焊接变形,导致功能丧失。对造成这一不符合项的原因进行了分析。对4_#吊篮筒体的焊接采取了包括修改焊接工装、修改焊接工艺与参数、施加反变形等措施,以尽可能地减小焊接变形。结果表明,4_#吊篮筒体焊接结果满足设计要求。
- 反应堆堆内构件 /
- 核电吊篮筒体 /
- 焊接变形控制
Abstract: The paper analyzes the severe deformation in the welding of core barrel in Qinshan Nuclear Power Phase II Extension Project Reactor 3_# unit,which nearly induces the loss of the function of the core barrel.Measures such as improving the welding fixture,process and parameter,and loading the counterweight is taken for the 4_# unit to minimize the deformation,and the result shows that the weld of the 4_# core barrel satisfies the design requirements.
- Reactor vessel internals /
- Core barrel /
- Control of welding deformation