Optimization of TIG welding parameters for tensile  load testing on dissimilar material joints of galvanized steel (SGCC) and low carbon steel (SPCC-SD)

Arul Basit; khoirudin khoirudin; Sukarman Sukarman; Tegar Dwi Cahyo; Syahrul Taufik Hidayat; Ridhwan Shalahuddin Saputra; Trisa Ramadan; Nana Rahdiana

doi:10.30811/jpl.v22i4.5025

Optimization of TIG welding parameters for tensile load testing on dissimilar material joints of galvanized steel (SGCC) and low carbon steel (SPCC-SD)

Arul Basit, khoirudin khoirudin, Sukarman Sukarman, Tegar Dwi Cahyo, Syahrul Taufik Hidayat, Ridhwan Shalahuddin Saputra, Trisa Ramadan, Nana Rahdiana

Abstract

Tungsten Inert Gas (TIG) welding is a welding technique that utilizes a tungsten electrode and argon or helium gas to shield the welding area. TIG welding offers numerous advantages including excellent shielding effect, stable arc, ease of heat input adjustment, minimal material spattering, and a visually appealing weld appearance. TIG welding is widely employed across various sectors of modern industry, particularly for welding thin materials like galvanized sheets. The zinc (Zn) layer on galvanized steel poses challenges due to the disparate melting points between the Zn layer and low carbon steel. Therefore, studies on optimal welding parameters for dissimilar material welding are highly necessary. This research focuses on TIG welding of SPCC-SD (JIS 3141) and SGCC (JIS 3302) materials with a thickness of 0.6mm and 0.8 mm. Electric current is varied at 45, 50, and 55 A. Gas flow rate is varied at 12, 15, and 18 Lpm. Weld bead diameter is varied at 5, 8, and 10 mm. The welded samples undergo tensile testing using a SHIMADZU AGS-X 10Kn STD E200V tensile testing machine. Data from the tensile tests are analyzed using S/N ratio analysis and ANOVA with the assistance of Minitab software. The S/N ratio analysis results indicate that the most optimal parameters recommended are an electric current of 55 A, a flow rate of 15 LPM, and a weld bead diameter of 10mm. Meanwhile, the ANOVA analysis shows that the weld bead diameter significantly influences the tensile load in TIG welding of SPCC-SD (JIS 3141) with SGCC (JIS 3302) materials, contributing up to 44.42%. Following the weld bead diameter, the flow rate and welding current contribute 21.93% and 16.41%, respectively.

Keywords

ANOVA; Galvanized; S/N Ratio; Tensile Strength; TIG Welding

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DOI: http://dx.doi.org/10.30811/jpl.v22i4.5025