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Soldagem & Inspeção

Print version ISSN 0104-9224


CUNHA, Tiago Vieira da. Proposal of roadmap for determining the variables of pulsed TIG welding process applied to welding of thin plates. Soldag. insp. [online]. 2013, vol.18, n.1, pp.64-71. ISSN 0104-9224.

In pulsed TIG welding the current varies between two well-defined energy levels in a given frequency being, therefore, necessary to the adjustment of a set of variables consisting of the peak current, peak time, background current, background time and the welding speed. However, despite being a technique so widespread, in practice these welding variables are often regulated arbitrarily. This can lead to inefficient use of the pulsed current regarding the end result of the weld as well as in the aspects of productivity. Given this shortage, this paper aims to present a roadmap developed in order to meet the practical need to establish criteria to assist in the determination of pulsed TIG welding variables, taking as its premise the desired width of the weld bead, overlap between the weld points comprising the weld bead and the welding speed. Finally, one application of this roadmap is presented in welding bead on plate of stainless steel plates with 1.2 mm thickness.

Keywords : Roadmap; Variables; Pulsed TIG.

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