Abstract
High power CO2 lasers are increasingly used in industrial welding, as this technology presents several advantages when compared to traditional welding processes. Nevertheless, the high power density of the laser beam can turn into a drawback when high carbon steels are welded. In the paper a high power (6 kW) CO2 laser source is used to perform a dual beam welding. The work was divided into three parts: the first is aimed to the modeling of the thermal field generated by the two portions of the laser beam. Then, based on this results, the optical equipment necessary to divide the beam into two portions with the desired characteristics was designed and developed.
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