超声C扫描图像在水冷基板焊合率计算中的应用  

Application of ultrasonic C-scan images in calculation of welding rate of water-cooled baseplate

作　　者：王亚俊 廖蕴博 WANG Yajun;LIAO Yunbo(R&D Center,CRRC Dalian Institute Co.,Ltd.,Dalian 116021,China)

机构地区：[1]中车大连机车研究所有限公司研发中心,大连116021

出　　处：《无损检测》2025年第2期52-58,共7页Nondestructive Testing

摘　　要：水冷基板产品是轨道列车IGBT(绝缘栅双极晶体管)模块换热的重要部件,为计算其焊合率,以超声C扫描图像为研究对象,利用标准漏孔对缺陷波进行阈值标定,实现C扫描缺陷图像与需识别缺陷尺寸的对应。利用图片处理软件完成标准图谱的制作,利用像素数量与面积成正比的关系,将焊合率的计算转换为实际图谱绿色像素点总数与标准图谱绿色像素点总数之比的计算。利用像素识别软件,对超声C扫描图像中焊接良好区域像素数量进行统计。试验结果表明,该方法可得出实际图谱绿色像素点总数和标准图谱绿色像素点总数,利用C扫描图像实现了焊合率的计算。Water cooled substrate products are important components for heat exchange in IGBT modules of rail trains.To calculate their welding rate,taking ultrasonic C-scan images as the research object,the threshold calibration of defect waves was carried out using standard leakage holes,so that the C-scan defect images corresponded to the size of the defect to be identified.Image processing software was used to complete the production of standard graphs.By using the proportional relationship between the number of pixels and the area,the calculation of welding rate was converted into a ratio calculation.By using pixel recognition software,the number of pixels in the well welded area of the ultrasonic C-scan image was statistically analyzed to obtain and calculate the welding rate using the C-scan image.

关 键 词：超声C扫描 面积与像素转化 焊合率 

分 类 号：TG115.28[金属学及工艺—物理冶金]