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Product Code: JLA_18_3_185

M. M. S. Gualini
S. Iqbal
Faculty of Applied Sciences, International I University, Islamabad, Pakistan

F. Grassi
Convergent Prima Industrie, Collegno (Turin), Italy

The dual laser beams method to lap weld galvanized steel sheets is being discussed, modeled, and analyzed, involving a precursor beam and a higher-power actual beam used in tandem and generated independently or otherwise split from the same source (Nd:yttrium-aluminum-garnet or CO2 laser). The first beam cuts a slot, thus making an exit path for the zinc vapors, while the second beam welds as required. The article also presents and discusses some experiments performed in laboratory using this method, along with the metallurgical analysis results from laboratory showing total absence of zinc in the weld area.

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