A Review Paper on GTAW for Identifying usage of Argon gas

A Review Paper on GTAW for Identifying usage of Argon gas

Mrs. P. Varalakshmi⁰¹, B. Ravinder⁰², B. Karthik reddy⁰³, N. Sumanth⁰⁴.

01- Assistant professor, 02,03,04-UG students, Department of Mechanical Engineering, Guru Nanak Institute of Technology, Hyderabad.

ABSRACT- Welding is used to join metals. Arc welding does this by using an electric arc that creates an intense amount of heat, which melts metals and allows them to join together. Gas Metal Arc Welding (GMAW) process is leading in the development in arc welding process which is higher productivity and good in quality. In this study, the effects of different parameters on welding penetration and hardness measurement in given work piece by using the argon gas metal arc welding are investigated. The shielding gas in GTAW has significant impact on the weld bead shape. Using Argon will form a wider Arc and lower heat transfer to the anode surface, which means less penetration and colder arc. The penetration and hardness were measured for specimen after the welding process and the effect of it was studied. As a result, it obvious that increasing the parameters value of welding current increased the value of depth of penetration. Other than that, arc voltage and welding speed is another factor that influenced the value of depth of penetration.

Keywords— GTAW, Hardness, Welding Parameter, Shielding Gas, Argon gas, Penetration.