RB-3试块在混流式水轮机转轮叶片焊缝超声波探伤中的应用  

Application of RB-3 Test Block in Ultrasonic Inspection of Weld Seam of Francis Turbine Runner Blade

作　　者：徐传标 周伟 XU Chuanbiao;ZHOU Wei

机构地区：[1]中广核检测技术有限公司

出　　处：《科技创新与应用》2019年第29期162-164,共3页Technology Innovation and Application

摘　　要：国内大型混流式水轮机转轮叶片焊缝都采用ASME作为探伤标准,受制于现场条件,无法短时间内制作出符合标准要求的试块。因此,作者尝试采用RB-3碳钢试块作为对比试块,通过对反射体尺寸、传输差异和斜探头角度进行修正,制作DAC曲线,并应用于实际检测,取得较好的检测效果。ASME is used as the flaw detection standard for the blade weld of large Francis turbine runner in China, which is subject to the field conditions and can not be made in a short time to meet the requirements of the standard. Therefore, the author tried to use RB-3 carbon steel test block as the contrast test block, and through the correction of reflector size, transmission difference and oblique probe angle, made DAC curve, applied it to practical detection, and obtained better detection results.

关 键 词：混流式水轮机转轮 叶片焊缝 超声波探伤 对比试块 

分 类 号：TG441.7[金属学及工艺—焊接]