The Optimization Of Cold Metal Transfer (CMT) Welding Process Parameters On 5052 Aluminium Alloy Tensile Strength Using Taguchi Method

A.Fadzil, Nur Fazreeha Ameelya (2017) The Optimization Of Cold Metal Transfer (CMT) Welding Process Parameters On 5052 Aluminium Alloy Tensile Strength Using Taguchi Method. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The 5XXX Series Aluminium-Magnesium alloy is well-known as a hard, high strength and excellent corrosion resistance material among the other alloys due to the high content of magnesium elements in the series. When come to the automotive industry, the process to assemble a thin-sheet similar or dissimilar Aluminium alloy is became one of the major problem against the engineers and companies as the optimal parameter setting for joining this material is hard to achieve especially when using the robotic welding technique such as Cold Metal Transfer (CMT) welding process. Hence, this research is concerned about the optimization of welding process parameters on 5052 Aluminium alloy tensile strength using Cold Metal Transfer (CMT) welding process. The 2mm in thickness, 120mm x 150mm in width and length respectively of 5052 Aluminium alloy is welded by using the advanced Gas Metal Arc Welding (GMAW) robot with the welding patterns involved are straight stepped, zig zag (Tripecoid) and circular (Spiral). Welding currents will be set on 85, 95 and 105Amp while welding speeds use are 0.50, 0.75 and 0.95 mm.min˗¹. The Taguchi’s method is used in order to identify the optimal welding process parameter setting. After run the analysis, the result shows that the most significance factors that affect the 5052 Aluminium alloy tensile strength are the welded specimen with the welding process parameters of spiral type welding pattern, 95Amp of welding current and 0.50 mm/min welding speed.

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