Optimization of FCAW Parameters for Ferrite Content in 2205 DSS Welds Based on the Taguchi Design Method

Abstract

This study presents the Taguchi design method with L9 orthogonal array which was carried out to optimize the flux-cored arc welding (FCAW) process parameters such as welding current, welding voltage, welding speed, and torch angle with reference to vertical for the ferrite content of duplex stainless steel (DSS, UNS S32205) welds. The analysis of variance (ANOVA) was applied, and a mathematical model was developed to predict the effect of process parameters on the responses. The results indicate that welding current, welding voltage, welding speed, torch angle with reference to vertical, and the interaction of welding voltage and welding speed are the significant model terms connected with the ferrite content. The ferrite content increases with the increase of welding speed and torch angle with reference to vertical, but decreases with the increase of welding current and welding voltage. Through the developed mathematical model, the target of 50% ferrite content in weld metal can be obtained when all the welding parameters are set at the optimum values. Finally, in order to validate experimental results, confirmation tests were implemented at optimum working conditions. Under these conditions, there was good accordance between the predicted and the experimental results for the ferrite content.

Investigation on Effect of Pulsed Current Micro Plasma Arc Weld Parameters on Uns S32750 Super Duplex Stainless Steel Sheets

“…Earlier studies conducted by researchers using plasm arc welding on duplex stainless steels are presented in this section. Flux Cored Arc Welding (FCAW) parameters optimized in accordance with the Taguchi specifications to weld 2205 DSS ferrite material [16]. Analysis was done on regression model progress and FCAW 2205 duplex stainless steel process parameter optimization [17].…”

Multivariate Stochastic Optimization Approach Applied in a Flux-Cored Arc Welding Process

“…Kannan and Yoganandh [22] followed a central composite design (CCD) to obtain mathematical models of bead geometry characteristics in austenitic stainless-steel claddings deposited by the gas metal arc welding process. Li et al [23] applied the Taguchi experimental design to optimize the bead geometry by varying certain controlled machine parameters of an FCAW process. In their work, Balan et al [24] optimized the bead geometry using a simulated annealing technique.…”

Pickling Behaviour of 2205 Duplex Stainless Steel Hot‐Rolled Strips in Sulfuric Acid Electrolytes

“…Type 2205 duplex stainless steel (DSS) has been used widely in many industries for its excellent mechanical properties and corrosion resistance [1][2][3][4][5][6]. However, the oxide scales formed on the surface of 2205 DSS during rolling and heat treatment are stable and dense due to the high chromium, molybdenum and nitrogen contents [7].…”