You have no items in your shopping cart.
ABSTRACT
Weld quality is affected by different factors including heat input and gas tungsten arc welding (GTAW) also reffered to as tungsten inert gas (TIG) welding process is characterized with low heat input and formation of pure quality weld product. The application of a GTAW welding operation depends on several process parameters, with arc temperature being a critical factor influencing weld quality and performance. This study is aimed at optimizing weld arc temperature considering the influence of welding current, welding voltage and gas flow rate as process parameters for mild steel welds. In this study, a design expert was employed using its central composite design to generate an adequate randomized experimental matrix for experimentation. Mild steel test specimens were prepared and welded using a TIG welding machine under controlled conditions while varying the selected parameters. High-precision temperature measurement equipment with an infrared thermography was employed to collect the weld arc temperature in real-time. The effects of each parameter were studied individually, and their interactions were also considered. Response surface methodology (RSM) was used to carry out statistical analysis and derive an optimal equation on the arc temperature
