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

In the present work, tungsten inert gas welding process was used to analyze the effects of input process parameters on reinforcement height of weldment. 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. Totally, 16 pairs of plates were welded to obtain 16 welds using 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, 4.23, 6.35 and 8.47 mm/s, respectively, for four welds. In each case the reinforcement height was measured. This was used to investigate the effect of feed rate on reinforcement height. In the similar manner, other three sets, each having four 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 four diagrams to investigate the effect of feed rate, welding speed, welding voltage and welding current on reinforcement height in each case. It is concluded that the reinforcement height increased with increase of current, voltage and feed rate and decreased with welding speed.