Acta Mechanica Slovaca 2015, 19(2):28-34 | DOI: 10.21496/ams.2015.012

Application of resistance spot welding in car body production

Emil Spi¹ák, ¥ubo¹ Ka¹èák, Ján Viòá¹*
Institute of Technology and Management, Faculty of Mechanical Engineering, Technical University of Ko¹ice, Mäsiarska 74, 040 01 Ko¹ice, Slovakia

The paper deals with the optimization of parameters of resistance spot welding and quality analysis of welded joints made of combination of galvanized steel sheets TRIP RAK 40/70+Z100MBO and DX51D + Z (EN 10142/2000 ). It is an advanced material combination frequently used in designing car body parts. The welded joints with various welding parameters were prepared. The quality of welded joints was evaluated by non-destructive and destructive tests. For evaluation of joints quality the shear tension test on spot joints according to STN 05 1122 standard was used. Some samples were prepared for metallographic analysis where the influence of the welding parameters on the structure of welded joint was observed. The influence of welding parameters on the dimensions of the weld nugget, and the occurrence of pores in the weld metal caused by evaporation of zinc from the coating were observed as well. Hardness was evaluated on metallographic scratch patterns according to STN EN ISO 14271 standard.

Keywords: Resistance spot welding; carrying capacity; metallography; microhardness

Published: October 31, 2015  Show citation

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Spi¹ák, E., Ka¹èák, ¥., & Viòá¹, J. (2015). Application of resistance spot welding in car body production. Acta Mechanica Slovaca, 19(2), 28-34. doi: 10.21496/ams.2015.012
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