摘要
带隔离层镍基异种钢环缝的堆焊隔离层射线检测存在边蚀散射、母材与焊缝的射线吸收系数差异大、焊缝的粗晶组织及各向异性会影响超声波检测的信噪比和定位准确性等问题。为解决这些问题,本文制作了射线检测边蚀散射补偿筒节,验证并分析射线底片上规则条形影像的性质和成因,设计了一套镍基异种钢环焊缝超声波检测试块并对其进行检测工艺综合评价实验。该方法取得了良好的效果。
The ray detection of nickel-based heterogeneous steel ring seam with isolation layer has edge erosion scattering,the difference between the ray absorption coefficient of the base material and the weld seam,the coarse grain structure and anisotropy of the weld seam will affect the ultrasonic inspection problems such as signal-noise ratio and positioning accuracy.To solve these problems,it is necessary to first make a ray detection edge erosion scattering compensation barrel section,verify and analyze the nature and cause of the regular bar image on the radiographic film,and secondly design a set of nickel-based dissimilar steel weld ultrasonic testing blocks and conduct comprehensive evaluation experiment of the detection process.Finally,the method has achieved good results.
作者
陈太军
谢进
谭云华
石爱玲
杜显禄
何旺
Chen Taijun;Xie Jin;Tan Yunhua;Shi Ailing;Du Xianlu;He Wang(Dong Fang Boiler Group Company,Ltd.,Zigong,Sichuan 643001)
出处
《西部特种设备》
2020年第3期40-49,共10页
Western Special Equipment
基金
广东省市场监督管理局项目(2020ZT04)
关键词
隔离层
镍基异种钢
信噪比
超声波检测试块
Isolation layer
Nickel-based dissimilar steel
Signal-noise ratio
Ultrasonic test block
作者简介
陈太军(1978—),男,学士,高级工程师,主要从事锅炉压力容器产品无损检测研究工作。
