反应堆堆内构件仪表套管焊接变形的控制

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Welding Deformation Control of Bottom Mounted In-Core Instrumentation Thimble Guide Columns in Reactor Internals

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 针对核电厂反应堆堆内构件不锈钢仪表套管柱在自由状态下焊接时,较易出现焊接变形的不符合项,提出一系列包括优化焊接工艺和参数等的控制焊接变形措施。焊接后的液体渗透检验、射线照相检验及尺寸检查结果表明,按此改进工艺焊接的仪表套管柱无缺陷存在;焊接变形量大大减少,位置度、尺寸精度均符合设计要求。
- 核电厂 /
- 仪表套管 /
- 焊接变形控制
Abstract: To the welding deformation of instrumentation thimble guide columns made of austenitic stainless steel,the paper put forward some measures to control the welding deformation,including optimizing the welding procedure and welding parameter.According to the improved welding procedure,no penetrant indications and radiographic defects appear after welding.Besides,welding deformations reduce greatly and no positional tolerance and dimension tolerance are out of the requirements.The improved welding procedure fully meets the design requirement.
- Nuclear power plant /
- Instrumentation thimble guide columns /
- Welding