Free welding of metal structures casing a laser

摘要

With the method of producing metal structures (1'), thin structure elements, in particular wall-shaped or column-shaped elements (1a, 1b), can be produced. This method is a type of free-form welding with a laser. By means of a laser and by means of pulse-like energy irradiation, metal powder or metal wire is fused to a substrate by repeated and controlled application, the metal-structure part already produced serving itself as the substrate. Owing to the pulse-like energy irradiation, the material quantity applied each time solidifies during the pauses between successive energy pulses essentially on account of heat dissipation into the substrate. The method according to the invention permits, for example, so-called "fast prototyping"; repair work can also be carried out.