摘要
控制棒驱动机构(CRDM)是核反应堆中的重要设备之一,其密封壳是构成核反应堆压力边界的一部分。密封壳是由两段不同材料(奥氏体不锈钢和镍基合金)筒体通过异种金属焊缝焊接而成的压力容器。产品生产过程中,在对此异种金属焊缝射线检测时发现了疑似缺陷的显示。通过试验验证,阐述了疑似缺陷产生的机理和过程,证明了此疑似缺陷并不影响焊缝的质量。
Control rod drive mechanism （CRDM） is a important equipment in nuclear reactor. The latch housing of the CRDM is a part of the pressure boundary of the reactor,which is composed of two barrels with different materials（ austenitic stainless steel and nickel based alloy） by bi-metallic welding. A suspected defect was found in radiographic testing on the hi-metallic weld. Based on the test, this article elaborated the mechanism and process of the suspected defect. It proved that the suspected defect do nothing with the welding quality.
出处
《压力容器》
2016年第4期59-64,共6页
Pressure Vessel Technology
关键词
控制棒驱动机构
异种金属焊接
射线检测
疑似缺陷
control rod drive mechanism （CRDM）
hi-metallic weld
radiographic testing
suspected defect
