Application and analysis of welding robot system for nuclear reactor pressure vessel closure head

KONG Yonghong; GAO Jungen; WU Yidang; LI Zhijie; XIAO Peng

doi:10.7512/j.issn.1001-2303.2021.10.10

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Application and analysis of welding robot system for nuclear reactor pressure vessel closure head
Vol. 51, Issue 10, Pages: 56-60(2021)
DOI： 10.7512/j.issn.1001-2303.2021.10.10

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KONG Yonghong, GAO Jungen, WU Yidang, et al. Application and analysis of welding robot system for nuclear reactor pressure vessel closure head. [J]. 51(10):56-60(2021)
DOI：

KONG Yonghong, GAO Jungen, WU Yidang, et al. Application and analysis of welding robot system for nuclear reactor pressure vessel closure head. [J]. 51(10):56-60(2021) DOI： 10.7512/j.issn.1001-2303.2021.10.10.

摘要

针对核反应堆压力容器顶盖焊缝的焊接进行了实例分析,设计了顶盖焊缝焊接机器人系统,完成了使用焊接机器人J型坡口自动焊焊接工艺评定、焊工考试和焊接工艺规程。结合RPV顶盖焊缝的特点,分析焊接机器人焊接关键技术及难点,重点围绕焊接机器人的焊接轨迹、焊接定位、焊接变形等关键技术难点以及产品焊接过程中的质量控制,提出解决措施,为焊接机器人在核反应堆压力容器顶盖J型焊缝焊接中的应用提供了理论依据和实践指导。

Abstract

Welding robot has the advantages of high production efficiency, stable welding quality and sustainable operation, and has been widely used in manufacturing industry.The welding of nuclear reactor pressure vessel（RPV） closure head are analyzed, a welding robot system for weld in closure head is designed, and its welding process is studied and confirmed, and the actual welding implementation of welding robot is introduced. According to the characteristics of J-groove weld in RPV closure head, the key technology and difficulties of welding robot are analyzed. Focusing on the welding trajectory, welding positioning, welding deformation and other key technical difficulties of the welding robot as well as the quality control of the welding process, the solutions are proposed, which provides experience for the application of welding robot in the welding of J-groove weld in RPV closure head.