精密铸造高温合金板材射线CR检测技术研究  

Study on Inspection Technique of Precision Cast Superalloy Sheet by Computed Radiography

作　　者：李永君[1] 肖俊峰[1] 高松[1] 张炯[1] 唐文书[1] 高斯峰[1] 南晴[1] LI Yong-jun;XIAO Jun-feng;GAO Song;ZHANG Jiong;TANG Wen-shu;GAO Si-feng;NAN Qing(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi'an 710054,Shaanxi,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《铸造》2020年第4期392-395,共4页Foundry

基　　金：华能集团总部科技项目(HNKJ20-H42)。

摘　　要：对精密铸造等轴晶高温合金板材射线CR检测技术进行了研究,制作了适用于射线CR检测的曝光曲线。结果表明,射线CR检测技术可实现深度≥0.6 mm裂纹缺陷的有效检测,图像质量可达AB级。通过窗宽窗位和锐化处理可有效改善射线CR图像质量,提高裂纹缺陷的识别度。The inspection technique of precision cast equiaxed superalloy sheet by Computed Radiography(CR) was studied and the exposure curve suitable for equiaxed superalloy was made. The results show that the cracks deeper than 0.6 mm in superalloy sheet could be detected and the image quality could reach AB grade. The picture quality and cracks identification resolution were improved by the window width and window level processing and sharpening treatment.

关 键 词：精密铸造 高温合金 射线CR 裂纹缺陷 图像处理 

分 类 号：TG115[金属学及工艺—物理冶金]