Investigation of defect rate of lap laser welding of stainless steel railway vehicles car body

Hongxiao Wang

doi:10.1117/12.2062962

3 February 2015 Investigation of defect rate of lap laser welding of stainless steel railway vehicles car body

Hongxiao Wang

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92551E (2015) https://doi.org/10.1117/12.2062962
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

In order to resolve the disadvantages such as poor appearance quality, poor tightness, low efficiency of resistance spot welding of stainless steel rail vehicles, partial penetration lap laser welding process was investigated widely. But due to the limitation of processing technology, there will be local incomplete fusion in the lap laser welding seam. Defect rate is the ratio of the local incomplete fusion length to the weld seam length. The tensile shear strength under different defect rate and its effect on the car body static strength are not clear. It is necessary to find the biggest defect rate by numerical analysis of effects of different defect rates on the laser welding stainless steel rail vehicle body structure strength ,and tests of laser welding shear tensile strength.

Citation Download Citation

Hongxiao Wang "Investigation of defect rate of lap laser welding of stainless steel railway vehicles car body", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92551E (3 February 2015); https://doi.org/10.1117/12.2062962

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