Influence of Process Parameters on Reinforcement Height of Tungsten Inert Gas Welded Joints for Low Carbon Steel AISI 1010 Plates

Abstract

In this work, Tungsten Inert Gas Welding process was used to analyze the effect of input process parameters on reinforcement height of the weld. The input process parameters were used as current, voltage, speed of welding, and the feed rate. Low carbon steel AISI 1010 plates of dimensions 75 mm × 50 mm × 5 mm were used to obtain the weld. Total of 16 pairs of plates was welded to obtain 16 welds using the tungsten inert gas welding process. At first current, voltage, and speed of welding were kept at constant values and the feed rate was varied one by one as 2.12 mm/s, 4.23 mm/s, 6.35 mm/s, and 8.47 mm/s, respectively, for 4 welds. In each case, the reinforcement height was measured. This was used to investigate the effect of feed rate on reinforcement height. In a similar manner other 3 sets, each having 4 welds were used to investigate the effect of welding speed, welding voltage, and welding current on reinforcement height respectively by keeping other variables at some fixed values. The results were tabulated and were expressed in 4 diagrams to investigate the effect of feed rate, welding speed: welding voltage and welding current on reinforcement height in each case. Generally, the reinforcement height increased with increase of current, voltage, and feed rate and decreased with welding speed in the present work.