ESTIMATION AND EXPERIMENTAL VERIFICATION OF WELDING TEMPERATURE BY GAS METAL ARC WELDING PROCESS

Ngo Thi Thao; Phan Ngoc Tuan; Than Van The

Ngo Thi Thao Hung Yen University of Technology and Education
Phan Ngoc Tuan Hung Yen University of Technology and Education
Than Van The Hung Yen University of Technology and Education

Keywords: ANSYS, GMAW, Welding temperature, experiment

Abstract

In this paper, the thermal model of butt joint in Gas Metal Arc Welding (GMAW) is constructed and simulated based on ANSYS software to obtain welding temperature field. Low carbon steel with temperature-dependent thermal properties due to very high welding temperature is considered. Volumetric heat source is determined through series equations for different welding conditions. Experiments are performed to measure and verify welding temperatures under different welding parameters. Results show that the simulation temperatures are in good agreement with the measurement temperatures for all cases. In addition, deformation and residual stress is also acquired through simulated results. This method strongly provides reliable information for finding an appropriate welding condition that will improve quality of welding products.

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