Patent DE-102008012064-A1 (DE)
Title: Method for the production of a hybrid molded part produced by a hybrid method, comprises areawisely forming the molded part as a machining or casting technically prefabricated base body
Inventor: HERZOG FRANK
IPC: B05D3/06
Filed: 2008-02-29
Abstract: The method comprises areawisely forming a hybrid molded part (1) as a machining or casting technically prefabricated base body (2). The molded part areawisely exists through a section (3, 4) produced through a laser melting process. The section is constructed generatively on the surface (7, 8) of the base body. Powder material is applied on the base body in layers or on already hardened powder material bounded with the base body and is areawisely melted by the effect of the radiation energy in order to form the section or part of the section after hardening. The method comprises areawisely forming a hybrid molded part (1) as a machining or casting technically prefabricated base body (2). The molded part areawisely exists through a section (3, 4) produced through a laser melting process. The section is constructed generatively on the surface (7, 8) of the base body. Powder material is applied on the base body in layers or on already hardened powder material bounded with the base body and is areawisely melted by the effect of the radiation energy in order to form the section or part of the section after hardening. The generatively produced section is rotated on the surface of the base body after partial construction and a further generatively produced section is constructed on a second surface. The further generatively produced section is areawisely subjected on the section generatively subjected before the rotation. The base body is rotated after construction of the first section for the construction of the second section around 60[deg] , 90[deg] , 120[deg] , 180[deg] , 240[deg] or 300[deg] C. The base body is rotated around a non-vertical axis or a horizontal axis (13). During the production process, the base body is arranged in a rotating holding device that is lowered by height adjusting in construction chamber during the construction process. The rotating holding device allows a rotation of the base body to degree of freedom without reception of the base body, which is fixable by the holding device during the construction process in different rotational positions. The holding device is adjusted during the construction process gradually around a rotating axis. The powder layer applied through the adjustment of the holding device on the surface has a wedge-shaped cross-section. The maximum thickness of the powder layer is measured in such a way that the powder layer is not yet completely melted. The rotation of the base body in the holding device is carried out during gradual layering of the base body against an initial position. The base body is surrounded in the area of the surface to be coated with powder material during the construction process, by a contour mask on which the powder material is applied during the coating process. The contour mask areawisely surrounding the base body or the mold part is formed like elastic sealing in the area adjacent to the mold part. The powder material is liquefied through the effect of oscillation energy. The interior area of the base body that adjoins to the surface to be coated is closed with an interior mask element, which carries the powder material during the coating process. Before rotation of the base body for the introduction of the construction process, the further section of the body is guided within a sequential lateral solidification device, in which the construction process expires, from a construction area in a handling area. The mold part is freed from powder residues in the handling area and is intended with a contour mask. The holding device is guidable and lockable in different rotating positions in program controllable manner. The contour mask is mounted on the holding device for carrying out the construction process. Independent claims are included for: (1) device for the production of a hybrid molded part; and (2) a hybrid molded part.