焊缝形貌对埋弧焊缝自动超声波探伤结果的影响分析

双面埋弧焊管焊缝的内部质量主要通过自动超声波探伤系统来检测.介绍了宝钢股份UOE生产线引进的管体焊缝自动超声波探伤设备及其焊缝跟踪原理.通过对该系统及超声波探伤样管结构等的分析,指出外焊缝形貌、内外焊缝宽度、内外焊缝中心偏移以及错边导致的焊缝形貌不规则等均会影响自动超声波探伤结果的准确性.最后,给出了提高埋弧焊管焊缝自...

Analysis on Effect of Weld Profile on Submerged Arc Weld Automatic Ultrasonic Testing Results

The weld internal quality of double side submerged arc welding is mainly detected by automatic ultrasonic testing system.In this article,it introduced weld automatic ultrasonic testing equipment and weld tracking principle which was imported from the abroad and used in production line.Through analysis on structure of sampled pipe detected by ultrasonic testing,it explained effect factors to the accuracy of ultrasonic testing results from several aspects,such as outside weld profile,inside and outside weld width,center misalignment of inside and outside weld,anomaly weld profile resulted from edge offset,and so on.Finally,it gave measures and methods of improving ultrasonic testing accuracy for submerged arc welded pipe.