^(75)Se射线源在薄壁小径管透照中的应用  

Application of ^(75)Se Radiographic Source in Small-diameter Pipes

作　　者：夏凤芳[1] 

机构地区：[1]上海电机学院,上海200245

出　　处：《压力容器》2006年第3期54-56,43,共4页Pressure Vessel Technology

摘　　要：利用75Se1、92Ir和X射线对阶梯试块及不同厚度钢板的对比试验,证明了75Se射线源在小径管的透照中具有较好的厚度宽容度,并提出了透照厚度下限降到4 mm左右的依据,以利于薄壁小径管设备的射线检测。By comparing the scan pictures made by ^75Se radiographic source, ^192Ir radiographic source and X - ray on steel piates with different thickness, it is proven that the ^75Se radiographic sorce is of better tolerance, it is provided that the scanning thickness can be reduced to 4 mm in order to facilitate the radiographic inspection of small - diameter pipes.

关 键 词：^75Se射线源 薄壁 透照厚度 厚度宽容度 

分 类 号：TG441.7[金属学及工艺—焊接]