Strength and Microstructure Analysis of Spot Welded Joints between a Sheet and a Nut of Different Steels
Keywords:spot welding, welded joints, welding parameters
This study presents an investigation on the strength of spot welded joints between a plate made of DC01 steel and a non-standard nut made by cold forming of C22 steel. In order to determine the influence of the welding current on the quality of such welded joints, three types of test specimens were produced using different welding currents. The strength of the welded joints was studied and microstructural analysis was carries out as well as the hardness of the welded contacts was measured.