The main aim of this paper was to present a new device for materials processing. It consist of a hybrid plasma torch which is characterized by the simultaneous formation of two plasma arcs in one device only, generating a (plasma) jet with high energy density. The torch was submitted to the following trials: of operation to identify possible design problems and its operational torch limits; of characterization, consisting in plasma jet length determination; and of viability for materials processing (welding and cutting). Based on these initial trials, some electrical and thermal insulation problems were found and solved. Concerning the results of the characterization trials, the hybrid plasma torch parameters had a significant influence over the plasma jet length. The results obtained in the materials processing trials were satisfactory, i.e., it is possible to carry out welding and cutting with this hybrid plasma torch.
Hybrid Plasma Torch; Plasma Jet; Welding; Thermal Cutting
