电焊机2018，Vol.48Issue(1)：63-69,7.DOI:10.7512/j.issn.1001-2303.2018.01.15
核电厂稳压器电加热器在役更换自动焊接技术
Research on automatic welding technology for pressurizer heater elements in-service replacement in nuclear power plant
陈英杰 1颜少华 1王松 1陈忠兵 2刘超 1成鹏 2冯兴旺1
作者信息
- 1. 中广核核电运营有限公司,广东深圳518124
- 2. 苏州热工研究院有限公司,江苏苏州215004
- 折叠
摘要
Abstract
In order to fill the domestic technology gaps and improve the capability of self-maintenance of main equipment in nuclear power plants,the automatic welding technology for replacing in-service heater elements of voltage stabilizer is researched.According to the characteristics of replacing in-service electric heater and the shortcomings of existing technology,the closed welding head is developed,which improves the stability of welding arc and gas shielded effect.Through a large number of automatic welding technology tests,the influence of protective atmosphere,specimen size and the chemical composition of base metal on the appearance of weld are discussed,and the welding parameters are determined.The results show that the use of argon backside protection and helium front protection welding can ensure complete penetration and protective effect on backing pass;the deviation of specimen structure size can affect the appearance of weld due to different heat dissipation;and the higher the content of S in the base metal chemical composition,the easier it is to penetrate.关键词
稳压器/电加热器/焊接电源/自动焊/焊接机头Key words
voltage stabilizer/electric heater/welding power source/automatic welding/welding head分类
矿业与冶金引用本文复制引用
陈英杰,颜少华,王松,陈忠兵,刘超,成鹏,冯兴旺..核电厂稳压器电加热器在役更换自动焊接技术[J].电焊机,2018,48(1):63-69,7.
