超声TOFD技术在小径厚壁管检测中的应用  

Application of Ultrasonic TOFD Technique on Small Diameter Thick-Wall Pipe

作　　者：齐向前[1] 

机构地区：[1]天津诚信达金属检测技术有限公司,天津300384

出　　处：《无损检测》2011年第7期29-31,共3页Nondestructive Testing

摘　　要：应用超声TOFD技术对规格为φ80mm×19mm的小径厚壁管进行了检测。阐述了TOFD探头楔块修磨后仪器相关参数的调整方法,并与相同厚度钢板进行了检测灵敏度对比。试验结果表明,TOFD探头楔块修磨至与被检管材相同曲率后,能够对焊缝内缺陷有效检出,且楔块修磨后检测灵敏度与相同厚度板材检测灵敏度相比,没有明显变化。Abstract： Ultrasonic TOFD technique was used to detect the pipe for specification of Ф 80 mm×19 mm. Regulation means of instrument parameters were explained for the wedge block after grinding and sensitivity comparison test was operated on the same thickness steel plate. The experimental result showed that the defect could be detected effectively after the wedge block being worn to the curvature as the pipe to be tested. Compared to the same thickness steel plate, no obvious change was observed for the test sensitivity.

关 键 词：TOFD检测 楔块 修磨 灵敏度 

分 类 号：TG115.28[金属学及工艺—物理冶金]