Ultrasonic testing of the CMT welding seam on aluminum alloy sheet
LI Hua-bin1， ZHANG Hong1，YANG Jing2
1.Technology Center，Shanghai Auto mobile Group Co.，Ltd.，Shang hai200041，China
2.School of Materials Science and Engineering，Shanghai University，Shanghai 200072，China
Abstract：Ultrasonic testing technology is used to detect the CMToverlap joint sand but tjoints of aluminum alloy with the base metal thickness less than 5 mm. The results of metallographic anatomy verify that：（1）Ultrasonic testing technology can be applied to the inspection of aluminum alloy sheet welds，and the detection rate of defects is high.（2）The welding quality of butt welds of aluminum alloy sheet is higher than that of the over lap weld under the CMT process.
2019, Vol. 37 
