| 在役压力容器焊接裂纹的成因分析及预防措施 |
| |
| 引用本文： | 陈冰川,陈伟民,朱伟青.在役压力容器焊接裂纹的成因分析及预防措施[J].理化检验(物理分册),2011(5):329-332. |
| |
| 作者姓名： | 陈冰川 陈伟民 朱伟青 |
| |
| 作者单位： | 国核电站运行服务技术有限公司; |
| |
| 摘 要： | 对某在役奥氏体不锈钢压力容器进行现场金相检验时发现其下封头的纵向焊缝处存在微裂纹。分析了裂纹的形成原因,结果表明:该裂纹是由焊接引起的横向沿晶液化裂纹和由压制成型引起的纵向裂纹共同构成的混合型裂纹。并针对如何预防此类裂纹,提出了相应的工艺改进措施。
|
| 关 键 词： | 在役压力容器 奥氏体不锈钢 焊缝 裂纹 现场金相检验 应力分析 |
Cause Analysis and Prevention Measures of Welding Cracks on In-service Pressure Vessel |
| |
| CHEN Bing-chuan,CHEN Wei-min.ZHU Wei-qing.Cause Analysis and Prevention Measures of Welding Cracks on In-service Pressure Vessel[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(5):329-332. |
| |
| Authors: | CHEN Bing-chuan CHEN Wei-minZHU Wei-qing |
| |
| Affiliation: | CHEN Bing-chuan,CHEN Wei-min.ZHU Wei-qing (State Nuclear Power Plant Service Co.Ltd.,Shanghai 200233,China) |
| |
| Abstract: | In the local metallographic examination process for an austenitic stainless steel in-service pressure vessel,the microcracks had been found in the longitudinal welds of its lower head.Formation mechanism of cracks was analyzed,the result showed that those cracks were composed of transverse liquefaction cracks cause by welding and vertical cracks caused by the suppression molding in manufacture.Some measures were proposed for the prevention of this kind of cracks. |
| |
| Keywords: | in-service pressure vessel austenitic stainless steel weld crack local metallographic examination stress analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
