Influence of Weld Current and Weld Time on the Push Test, Nugget and Penetration Depth of Steel Plate SPFC590 with Weld T-Nut M10

Abstract

This study describes the effect of parameter current and weld time, welding using materials plate steels SPFC590 t1.2 and Weld T-Nut M10 with media seated spot welding machines brand Dagensha 50 kVA. This test is to analyze push test, nugget, and penetration depth spot welding against the engineering standard of PT HMC (Hyundai Motor Company). In this research, the researcher used the factorial experimental design method to provide a test lay out formulation, know the optimal conditions for setting parameters, and determines the performance effect of setting the parameters such as push test, nugget, and penetration depth spot welding. Test results push test between plate steels SPFC590 t1.2 and Weld T-Nut M10 the largest was 17.7 kN and the smallest was 15.4 kN the test results have passed the results of the engineering standard 6.5 kN. The test results on the nuggets the longer the melt occurs the wider the growth of the melt, and after part at room temperature the melt zone will become nuggets for the average nugget test results is 5.6 mm and has passed the engineering standard results. While the penetration test results the longer the welding time the deeper the penetration depth. The conclusion from this research, among others, is that the parameters of welding time and current strength can affect the results of the Nugget size and penetration depth of Spot Welding, but can reduce the strength of the push test besides that the less the remaining plate that is not exposed to penetration the smaller the push test strength, and the less the penetration depth the smaller the push test strength and the higher the current strength the greater the size of the nugget