核电站用高磅级阀体铸件的全体积射线检测  

Full volume radiographic inspection of high pound valve body casting for nuclear power plant

作　　者：朱镇 陈晓娟 王兆云 ZHU Zhen;CHEN Xiaojuan;WANG Zhaoyun(Zhejiang Jiuli Hi-Tech Metals Co.,Ltd.,Huzhou 313028,China;Sichuan Hwayoo Petroleum Drilling&Production Co.,Ltd.,Luzhou 646100,China;Jiangsu Wanheng Casting Industry Co.,Ltd.,Yancheng 224513,China)

机构地区：[1]浙江久立特材科技股份有限公司,湖州313028 [2]四川华宇石油钻采装备有限公司,泸州646100 [3]江苏万恒铸业有限公司,盐城224513

出　　处：《无损检测》2022年第1期49-52,59,共5页Nondestructive Testing

摘　　要：针对传统胶片射线检测技术对结构复杂、壁厚大的高磅级核电阀体难以进行全体积检测的问题,以典型产品直径为6 inch(1 inch=25.4 mm),承载质量为1 500 lb(1 lb=0.45 kg)的止回阀为例,分别从检测区域的划分和标识,双胶片技术、厚度补偿块技术和预曝光技术的应用等方面优化了检测工艺,优化后的工艺能达到规范要求的全体积检测的目的,可为同行提供参考。Aiming at the problem that traditional film radiographic inspection technology is difficult to perform full volume inspection of high pound nuclear power valve body with complex structures and large wall thickness, this paper taking a typical product with diameter is 6 inch(1 inch = 25.4 mm) and the bearing mass is 1500 lb(1 lb=0.45 kg) check valve as an example, The detection process is optimized from the division and identification of detection area, the application of double films technology, thickness compensation block technology and pre-exposure technology to achieve the purpose of full volume inspection as required by the specification, which can provide a reference for peers.

关 键 词：阀体铸件 全体积射线检测 核电站 

分 类 号：TG115.28[金属学及工艺—物理冶金]