WELDING PROCESSES FROM FRONIUS INNOVATIVE AND EFFICIENT

Hybrid processes combine conventional welding processes, such as MIG, MAG and TIG welding, with laser welding. A preliminary laser beam heats up the workpiece surface to vaporisation temperature and creates deep, narrow penetration. An arc follows forming a wide focal spot. Applications of this type of welding include welding components with large gap widths, which the laser alone cannot bridge. Hybrid processes enable high welding speeds and good weld seam quality to be achieved, thereby reducing the heat input and distortion.

Energy-efficient and productive welding process in which no shielding gas needs to be added. The two parts to be joined are laid on top of one another precisely. Two electrodes press the workpieces together mechanically and fix them in place. A strong voltage creates a current flow between the two electrodes. The workpieces exhibit a resistance which causes specific points of the metal to heat up considerably and become liquid. The mechanical pressure of the electrodes causes the two workpieces to fuse together, resulting in an inseparable joint once they have cooled down. Resistance spot welding is used to join sheets in bodywork and vehicle construction, and generally in sheet metal production. Materials that are not suited to welding can also be joined, with certain limited exceptions.

The plasma welding process is very similar to the TIG welding process, but has a number of key advantages. These make it an attractive alternative to laser welding, which demands high quality standards – in particular for sheets and other components with a thickness of up to 8 mm.