OPTIMASI PARAMETER PENGELASAN PULSE CURRENT GTAW TERHADAP NILAI DISTORSI PADA MATERIAL SA240 TYPE 304L

Abstract

TIG pulse current or GTAW has various parameters that can affect the distortion value, including frequency, current, and flowrate. Optimization is carried out to find the optimal parameters in TIG pulse current welding on distortion, when an optimal parameter is found, a process becomes more optimal and effective. Taguchi and ANOVA methods are used because they are able to improve quality from before the process and during the process so that it is used in this study. The contribution of each parameter to the influence of the distortion value is also calculated to be able to produce a precise and accurate analysis. In this welding, the optimum value is obtained and produces the average value of the test with the least distortion value is the frequency of 3hz, current 1A, and flowrate 12 L/min., and for the percent contribution of each parameter to signal to noise ratio value is 79,88% at frequency, 19,43% at current, and 0,09% at flowrate.