STUDY ON THE INFLUENCE OF SUS304 BUTT WELDING PROCESS PARAMETERS ON THE SIZE OF HEAT AFFECTED ZONE USING GTAW TECHNOLOGY

Authors

  • Trinh Tien Tho Faculty of Mechanical Engineering, Ho Chi Minh City University of Industry and Trade Author
  • Vo Tuyen Faculty of Mechanical Engineering, Ho Chi Minh City University of Industry and Trade Corresponding Author
  • Dang Van Hai Faculty of Mechanical Engineering, Ho Chi Minh City University of Industry and Trade Author
  • Phan Nhat Tuan Center for Vocational Education-Continuing Education District 10, Ho Chi Minh City Author

DOI:

https://doi.org/10.62985/j.huit_ojs.vol26.no1E.351

Keywords:

GTAW, welding current, welding voltage, welding speed, heat affected zone width

Abstract

Gas Tungsten Arc Welding (GTAW) is a welding process that uses an arc between a non-consumable tungsten electrode and the workpiece to establish a weld pool. This process is used with shielding gas and does not require pressure and can be used with or without additional filler metal. Due to the high quality of welds produced by gas tungsten arc welding, this process has become an indispensable tool for many manufacturers, including those in the aerospace, nuclear, marine, petrochemical, and semiconductor industries, etc. In this study, the main welding process parameters including welding current I (A), welding voltage U (V), and welding speed v (mm/s) were selected based on practical requirements when studying their effects on the size of the heat affected zone (HAZ) when butt welding SUS304 using GTAW technology. Through experimental research and experimental planning, the output parameter results are the width of the heat affected zone (HAZ) reaching the smallest value Ymin = 0.6250 mm. From there, the optimal parameter set for the SUS304 butt joint welding process using GTAW technology is determined as follows: welding current I = 108.42 A; welding voltage U = 14.977 V and welding speed v = 3.1704 mm/s.

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Published

2026-05-18

Issue

Vol. 26 No. 1E (2026)

Section

Mechanical and Power Engineering