Effect of Coating Thickness on Electrode Life in the Spot Welding of Galvanized Steels

Authors : Fisun MÜFTÜOĞLU

Pages : 183-187

Doi:10.3906/tar-1204-58

View : 10 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study examined the effect of coating thickness on electrode life and nugget strength. Uncoated and galvanized steel sheets supplied from Ereğli Iron and Steel Factories Co. insert ignore into journalissuearticles values(Erdemir); with similar chemical compositions having different coating weights insert ignore into journalissuearticles values(100, 180, and 275 g/m2); were welded using resistance spot welding under constant welding parameters. Electrode force used during spot welding operation was 7.3 kN under 6.5 kA of constant welding current and 2 s welding time. After welding operations, shearing tests were applied to selected specimens and the nugget diameters were measured. Experimental results showed that as the coating thickness increased the electrode life and the strength of the weld nugget decreased.
Keywords : Galvanized steel, Spot welding, Coating thickness, Nugget, Electrode life