Alternative TitleDetection of Butt Weld of Laser-MIG Hybrid Welding of Thin-Walled Profile for High Speed Train
周庆祥1; 刘芳2; 李经明2; 李建奎2; 张双楠2; 蔡桂喜2
Source Publication中国铁道科学
Other AbstractThe analysis of existing detection methods showed that the laser-MIG composite welding structure of the thin-walled profile for high speed train body had a complex internal shape and thinner plate,so it was difficult to implement the conventional non-destructive inspection method of welding quality.In order to solve this problem,the ultrasonic creeping wave detection technology was proposed.The impact of the profile structure on the creeping wave detection was studied by designing profile structural test blocks and artificial simulation defect test blocks.The detection technology was used to test the actual welded test blocks,and compared with the results of X-ray test and destructive test(tensile test)to verify the accuracy of the ultrasonic creeping wave test results.Results show that X-ray has better effect on the inspection of porosities and incomplete penetration defects.However,due to special detection method and protection,the detection speed is slow,which can’t meet the requirements of field inspection of the welding structure of aluminum alloy thin-walled profile for high speed train body.It can be used as an auxiliary detection method for a small number of sampling inspection.The ultrasonic creeping wave can be used to detect the incomplete penetration welds with the equivalent of 0.25 mm or more.The results of creeping wave detection correspond well with the actual incomplete penetration defects,which can be used for the welding quality inspection of aluminum alloy thin-walled profile composite welding joints.It is recommended to use the echo amplitude of the 10 mm×0.2 mm×0.5 mm notch as the criterion for weld qualification.
Keyword高速列车 铝合金型材 激光-MIG复合焊 无损检测 X射线检测 超声爬波检测
Indexed ByCSCD
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
周庆祥,刘芳,李经明,等. 高速列车薄壁型材激光-MIG复合焊对接焊缝检测[J]. 中国铁道科学,2020,41.0(1.0):31-39.
APA 周庆祥,刘芳,李经明,李建奎,张双楠,&蔡桂喜.(2020).高速列车薄壁型材激光-MIG复合焊对接焊缝检测.中国铁道科学,41.0(1.0),31-39.
MLA 周庆祥,et al."高速列车薄壁型材激光-MIG复合焊对接焊缝检测".中国铁道科学
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