Experimental investigation for multi characteristics optimization of MIG welding on 304 stainless steel using desirability function analysis


Affiliations

  • Techno International Batanagar, Maulana Abul Kalam Azad University of Technology, Mechanical Engineering Department, Kolkata, 700141, India
  • College of Engineering, Wasit University, Mechanical Engineering Department, Iraq
  • Jadavpur University, Mechanical Engineering Department, Kolkata, 32, India

Abstract

Metal Inert Gas (MIG) welding is an advanced type of welding process where a fusion of gas welding and arc welding is used with shielding component (CO2) at welding zone and brass coated stainless-steel wire is used as electrode and the feed for joining material (304 stainless steel) is automated which can mostly utilized in mines and metals industries for specific uses. This paper includes parametric influences like applied voltage (V), current (I) and gas flow rate (lit./min) on surface roughness (Rz), width of bed thickness (WOBT) and hardness. The article also consists of the development of mathematical models and analysis of variances (ANOVA) for validation to fit of experimental data and developed models. To find out the single as well as multi objective optimization for minimum surface roughness (Rz), minimum width of bed thickness (WOBT) and maximum hardness through desirability function analysis using response surface methodology (RSM) during welding of 304 stainless-steel thin plate by MIG process. This paper also validated the test results at optimal conditions of 26V, 120amp and 21 litter/min gas flow rate and achieved maximum hardness of 97, WOBT of 5.57mm and minimum surface roughness (Rz) of 7.65mm.

Keywords

MIG, 304 stainless steel, width of bed thickness (WOBT), surface roughness (Rz) desirability function analysis, optimization.

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