摘要
CRDM管座贯穿件密封焊根部焊接裂纹问题一直以来困扰着各大核设备制造厂。提出一种解决根部裂纹问题的工艺改进措施,并通过焊接数值模拟方法进行模拟分析,改进了CRDM管座贯穿件密封焊接工艺,解决了根部焊接裂纹问题。改进后的焊接工艺通过了焊接工艺评定的验证。最终,改进后的焊接工艺应用于产品制造,21根CRDM管座贯穿件密封焊缝所有检验一次合格。
The crack of the welding root for the CRDM socket flange and penetration assemblies has been puzzling the manufacturers of nuclear island equipment.In this paper,the process improvement measures of welding root crack were proposed.In addition,the welding process of it was optimized by welding simulation to solve weld crack problem.Ultimately the improved process was qualified by the welding procedure qualification.Finally,21 CRDM pipe socket penetration seal welds of the product were inspected and qualified at one time.
作者
陈俊锋
CHEN Junfeng(The Second Representative Section of Equip-ment Department Based on GuangZhou,Guangzhou 510006,China)
出处
《电焊机》
2020年第11期58-63,I0006,共7页
Electric Welding Machine
关键词
CRDM管座贯穿件
裂纹
焊接模拟
工艺改进
CRDM socket flange and penetration asse-mblies
crack
welding simulation
process improvement
