A dynamic welding heat source model in pulsed current gas tungsten arc welding

Authors: Zhang Tong, Zheng Zhentai, Zhao Rui

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A time-dependent welding heat source model, which is defined as the dynamic model, was established according to the characteristic of PCGTAW. The Gaussian model was proposed to describe the heat flux distribution at both the background and peak times.

Geometry and measure points (A, B, C)

Pulsed current GTAW process parameters

AA7075 material properties

Welding heat source model and definition

Results

Temperature distribution

Compare the results at the measuring points with the experiment

Point A

Point B

Point C