Laser welding or sintering procedure for producing three-dimensional workpieces e.g. molds and direct steel components, comprises applying steel powders on an underlay and then transferring into a welding phase by focused radiation

摘要

The laser welding or sintering procedure for producing three-dimensional workpieces such as molds and direct steel components, comprises applying steel powders on an underlay in layer-wise manner and transferring into a welding phase by the influence of focused radiation in area-wise manner, and forming the workpiece after the cooling and solidification process. The final workpiece is hardenable at 47 HRC. The underlay comprises a martensite-hardenable base body, which forms a part of the finished workpiece and is prefabricated with a degree of hardness of greater than 47 HRC. The laser welding or sintering procedure for producing three-dimensional workpieces such as molds and direct steel components, comprises applying steel powders on an underlay in layer-wise manner and transferring into a welding phase by the influence of focused radiation in area-wise manner, and forming the workpiece after the cooling and solidification process. The final workpiece is hardenable at 47 HRC. The underlay comprises a martensite-hardenable base body, which forms a part of the finished workpiece and is prefabricated with a degree of hardness of greater than 47 HRC or is hardened after the structuring process at 47 HRC. The base body consists of one of the steel of 12083, 12085 or 12316. An independent claim is included for a workpiece.