Analysis and improvement application of welding quality problem in electric heater parts of nuclear power pressurizer

某核电稳压器电加热器元件焊接质量问题分析与改进应用 Analysis and improvement application of welding quality problem in electric heater parts of nuclear power pressurizer 黄亚纯 HUANG Yachun 1 first-author 高俊根 GAO Jungen 1 刘开理 LIU Kaili 1 中广核工程有限公司 中广核工程有限公司 China Nuclear Power Engineering Co.,Ltd. China Nuclear Power Engineering Co.,Ltd. 核电稳压器电加热器元件焊缝为压水堆核电站一回路承压边界,其焊接技术难度大。某项目核电稳压器电加热器元件焊接中多次出现根部未焊透和外凹尺寸超标的质量问题。本文对稳压器电加热器元件焊接质量问题进行分析、研究,找出缺陷产生原因,从而改进焊接工艺或控制措施,解决和避免了类似质量问题的再次发生,保障了产品质量。 The quality problems occur many times in the welding of electric heater parts of nuclear power pressurizer in a certain project, such as incomplete penetration of root and pits dimensions out of tolerance. In this paper, the welding quality problems of electric heater parts in pressurizer are analyzed and studied to find out the causes of defects, so as to improve the welding process or control measures, solve and avoid the recurrence of similar quality problems and ensure product quality. 稳压器 电加热器元件 焊接缺陷 改进 pressurizer electric heater part welding defect improvement TM623 2022-03-08 11 51