Effect of welding current on mechanical properties of galvanized chromided steel sheets in electrical resistance spot welding

• Published in: Materials in engineering Vol. 28; no. 1; pp. 2 - 7
• Main Authors: Aslanlar, S., Ogur, A., Ozsarac, U., Ilhan, E., Demir, Z.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2007
• Subjects: Automotive; Electrical resistance; Electrodes; Galvanizing; Micro alloyed steel sheet; Resistance spot welding; Sheet metal; Spot welding; Steels; Weld current; Welding; Welding current; Micro alloyed steel sheet; Weld current; Automotive; Resistance spot welding
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2005.06.022

In this study, the effect of welding current on the quality of weld joint and obviously on tensile-shear and tensile-peel strengths of galvanized chromate steel sheets having 1.2 mm thickness in electrical resistance spot welding was investigated. A timer and current controlled electrical resistance spot welding machine having 120 kVA capacity and pneumatic application mechanism with a single lever was used to prepare the specimens. Welding periods were chosen as 5, 10, 12 and 15 cycles and also welding currents were increased from 4 kA up to 12 kA by rise of 1 kA. The electrode force was kept constant at 6 kN. The prepared welding specimens were exposed to tensile-shear and tensile-peel tests and the obtained results were supported by diagrams and, finally, appropriate welding parameters were advised to the users.