Optimization of GMAW process parameters on the ۵۰۸۳ aluminum alloy using Taguchi method in order to minimize the welding-induced distortion

Non-heat-treatable ۵۰۰۰-series aluminum alloys such as ۵۰۸۳ have been attracted the most attention for use in the marine industries. In this research, the effect of gas-metal arc welding process parameters on the angular distortion of ۵۰۸۳ aluminum alloy joint using ER۵۱۸۳ filler metal was investigated. Accordingly, the wire-feed speed, voltage, welding speed, and gas flow rate as the important parameters of the welding process changed at three levels. Experiment design based on Taguchi method with orthogonal array L۹(۳۴) was performed and the results are analyzed using signal to noise ratio. The analysis of the angular distortion test results showed that the wire-feed speed, welding speed, voltage, and gas flow rate had the highest effect on the angular distortion, respectively. The optimal values of ۷ m.min-۱, ۲۴ V, ۰.۹ m.min-۱, and ۱۷ l.min-۱ were obtained for the wire-feed speed, welding speed, voltage, and gas flow rate respectively. The analysis of variance (ANOVA) of the DOE method was conducted and was observed that wire-feed speed was the most significant GMAW process parameter due to its highest percentage contribution (۵۶.۸۳% among the process parameters).

کلیدواژه ها:

۵۰۸۳ aluminum alloy ، ER۵۱۸۳ filler metal ، GMAW process ، Angular distortion ، Taguchi method ، Signal to noise ratio