核反应堆压力容器接管安全端异种金属焊缝自动超声检测技术  

Automatic Ultrasonic Testing Technique for Safe-end Dissimilar Weld of Nuclear Reaction Presure Vessel Nozzle

作　　者：卢威 刘云 丁松 张运平 刘奎 

机构地区：[1]中核武汉核电运行技术股份有限公司,湖北武汉430223

出　　处：《压力容器》2017年第1期56-61,共6页Pressure Vessel Technology

基　　金：国家科技重大专项"核电站寿命管理技术研究"资助项目(2011ZX06004-002)

摘　　要：核反应堆压力容器接管与主管道之间存在一条安全端异种金属焊缝,焊缝组织晶粒粗大,各向异性,声波偏转较明显,使得在进行超声检测时,超声能量有极大的衰减,而且噪声较大,具有较大难度。为实现对反应堆压力容器接管安全端异种金属焊缝进行有效的超声检测,以超声理论和实践经验为指导,通过对反应堆压力容器接管安全端异种金属焊缝检测技术开展的技术分析和试验,确定了一套可靠的接管安全端异种金属焊缝自动超声检测技术,并在核电厂进行了实际应用。There is a safe-end dissimilar weld between the nuclear reactor pressure vessel nozzle and the primary system pipe, the microstructure of weld is coarse grain. Ultrasonic testing for this kind of weld is difficult, beacause anisotropic and acoustic deflection is obvious in ultrasonic detection, ultrasonic energy has great attenuation, and the noise is high. Base on the ultrasonic theory and practice experience, then develop reliably ultrasonic testing technique for reactor pressure vessel nozzle safe-end dissimilar weld, and the technique had been carried out in nuclear power plant.

关 键 词：接管安全端 异种金属焊缝 自动超声检测技术 

分 类 号：TH49[机械工程—机械制造及自动化] TL351[核科学技术—核技术及应用]