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ABSTRACT
Welding temperatures can be so intense that spatter could from which is capable of inflicting bodily harm to welders. Also, welding with extremely intense temperatures that cause spatter are not likely to produce weldments that are of good quality due to the influence of pores trapped in the weldment. In order to prevent problems of poor quality weld, input process parameters would have to be input process parameters would have to be optimized, hence this study.
In this study, the Brinell hardness number and bead width are the mechanical properties considered. These mechanical properties are seen as quality characteristics used for the optimization process. In this study, the complex proportional Assessment of Alternatives (COPRAS) method was used to assess the mechanical properties and has the optimized process parameters of a welding current of 150A, a voltage of 20V, a wire diameter of 3.2mm and a gas flow rate of 13 Litres/min.
This study has showed that COPRAS can be used successfully to optimize the welding process parameters.
