某核电机组高压缸裂纹的焊接修复

葛炼伟; 唐世延; 李太江; 李巍; 李勇; 李聚涛

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某核电机组高压缸裂纹的焊接修复

热力发电 2014年43卷第1期页码：137-139

现场经验交流 | 更新时间：2025-09-28

- 某核电机组高压缸裂纹的焊接修复
- Welding repair technology for cracks on high pressure cylinder in a nuclear power plant
- 作者机构：
  
  1. 中核核电运行管理有限公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： TM307
- 纸质出版：2014
- 稿件说明：
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葛炼伟, 唐世延, 李太江, 等. 某核电机组高压缸裂纹的焊接修复[J]. 热力发电, 2014,43(1):137-139.

GE Lianwei, TANG Shiyan, LI Taijiang, et al. Welding repair technology for cracks on high pressure cylinder in a nuclear power plant[J]. Thermal Power Generation, 2014, 43(1): 137-139.
葛炼伟, 唐世延, 李太江, 等. 某核电机组高压缸裂纹的焊接修复[J]. 热力发电, 2014,43(1):137-139. DOI：

GE Lianwei, TANG Shiyan, LI Taijiang, et al. Welding repair technology for cracks on high pressure cylinder in a nuclear power plant[J]. Thermal Power Generation, 2014, 43(1): 137-139. DOI：

摘要

对秦山第二核电站3号机组高压缸缸体厚度过渡区域的裂纹进行了焊接修复。分析了焊接修复技术难点

给出了焊接修复具体操作步骤。焊接工艺试验结果表明

采用镍基焊材获得的焊接接头抗拉强度为505MPa

焊接接头经正弯、背弯后无裂纹

焊缝冲击吸收功为150J

焊缝组织为奥氏体及铁素体

接头组织性能满足高压缸缸体运行工况要求。高压缸缸体裂纹经焊接修复运行1年后

未发现缺陷

说明焊接修复效果良好。

Abstract

Cracks were found at the curvature transient zone of high pressure cylinder during the maintenance of the No.3unit in Qinshan No.2Nuclear Power Station

which may cause safety accident during operation.The welding repair technology for ZG15Cr2Mo1cylinder was developed through the welding experiment

microstructure analysis and mechanical test.The difficulties in welding repair were presented and the detail operation steps were given.The results showed that

tensile strength of the weld joint by nickel based weld material was 505MPa;cracks were not observed after bending test;the impact absorbing energy was 105J.The mechanical properties indicated that the austenitic weld satisfied the operational requirement of the cylinder.The developed welding repair technology was adopted during in-field repair of the high pressure cylinder.After one year in-site operation

the repaired zone exhibited a good effect.

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