An Experimental Investigation on the Effect of MIG Welding parameters on the weld joint using Taguchi method

Abstract

In my study determine the effect of MIG welding parameters on welding joint with Taguchi orthogonal array
method. A welding mild steel plate is IS 2062 E 250 grebe A by means of the filler metal diameter of wire is 1.2 mm and its
grade is ER 70S6 and inert gas is 100% carbon dioxide.
In this work the variable parameters are weld current, weld voltage and weld wire rate moreover stable input
parameters are weld arc time, and gas flow time is 17lit/hr. to investigation of the tensile strength and hardness of the
welding joint are examine in an experimentally. They have chosen three constraints were change at three levels. Designing
the nine experiments were stage base on L9 orthogonal array of Taguchi technique. It consisting of three input variables are
welding current, voltage and wire feed rate respectively. Finding the single to noise ratio(S/N ratio) and analysis of variance
(ANOVA) based on S/N ratio of employed of mini tab 17 software, which is investigated that the wire feed rate maximum
effect on tensile strength go after welding current and arc voltage. And the arc voltage has maximum effect in hardness go
after wire feed rate and welding current.