Numerical Model for Powder Consumption, HAZ Width and Toughness in Tandem Submerged Arc Welding

Abstract

The two wire tandem submerged arc welding (TSAW) process has attracted widespread attention as an automated welding method in various industries. It provides several advantages including good welding quality and high deposition rate. However, the complexity of arc behavior leads to difficulties in adjusting the main affecting parameters such as amperage, voltage and the nozzles assembly. In the present investigation, a response surface methodology (RSM) and Taguchi's orthogonal array technique were carried out to determine the influence of the amperage and the voltage of DC and AC currents as well as the assembly of nozzles on the width and toughness of HAZ as well as the consumption of welding powder. The results confirmed the effectiveness of the developed models for predicting experimental evidence with high precision. The input parameters including amperage, voltage and the assembly of nozzles were subsequently adjusted to minimize the HAZ width and powder consumption as well as to maximize HAZ toughness.