Arrangement for welding and/or glazing workpieces made of hard brittle or other hot crack-sensitive materials with laser beam of a laser and an optic or a sensor, where the laser is a brilliant fiber- or disc laser

摘要

The arrangement for welding and/or glazing workpieces made of hard brittle or other hot crack-sensitive materials with laser beam of a laser and an optic or a sensor, where the laser is a brilliant fiber- or disc laser with a power of greater than 50 W, is claimed. The laser radiation of the laser has a wavelength of >= 0.5-2 mu m. The optics or the scanner are connected with a control device so that the laser radiation is moved with a focus of 75 mu m and with a speed of 100-300 m/min over the working station for crack-free welding and/or glazing. The arrangement for welding and/or glazing workpieces made of hard brittle or other hot crack-sensitive materials with laser beam of a laser and an optic or a sensor, where the laser is a brilliant fiber- or disc laser with a power of greater than 50 W, is claimed. The laser radiation of the laser has a wavelength of >= 0.5-2 mu m. The optics or the scanner are connected with a control device so that the laser radiation is moved with a focus of 75 mu m and with a speed of 100-300 m/min over the working station for crack-free welding and/or glazing, where no thermal pre-treatment is required. The laser radiation of the laser has a very high beam quality with a diffraction index 2. The workpieces to be welded and glazed consist of ceramic, dental ceramics, glass, porcelain, hard metal or high-alloy austenitic steels.