Application of TL Tandem Test Method in Narrow Gap Straight Edge Groove Weld
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摘要: 介绍了大厚度直边坡口窄间隙焊缝未熔合类缺陷的TL串列式超声检测法,针对单探头检测这类缺陷时容易漏检的问题,前后串列式方法使用起来不太方便,提出了横波与纵波波形转换的方法来检测这类缺陷.结果表明:TL串列式超声检测法可以方便、可靠、精确地检测出窄间隙焊缝未熔合与裂纹等面积性缺陷.Abstract: The TL tandem test for detecting the defects of incomplete fusion in the big thickness narrow gap straight edge groove weld was introduced.It is easy to fail to detect the incomplete fusion defect with single probe and it is not convenient to use fore-and-aft tandem angle probe method to detect the same defects,therefore,the method of the transverse wave and longitudinal wave waveform conversion to detect the defects of incomplete fusion in the big thickness narrow gap straight edge groove weld is put forward.Results show the TL tandem method can effectively detect area-type defects,such as cracks and incomplete fusions in the weld.
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Keywords:
- Narrow gap weld /
- Straight edge groove /
- TL tandem
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[1] 张并生,陈国瑞,步先超.窄间隙焊缝坡口角度对超声波串列扫查影响研究[J].无损检测,1996,18(2):33-36. [2] 胡汝舜,吴根华.串列式超声波探伤的缺陷定位[J].无损检测,1995,17(1):5-9,19. [3] 孙立巍,解应龙,邹晶,等.大厚度窄间隙焊缝超声波自动串列扫查[J].焊接,1998(2):19-22.
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