Abstract

The invention relates to a method for the additive manufacture of three-dimensional metallic components (12), said components (12) being built layer-by-layer or section-by-section under vacuum conditions by fusing a metallic material with the component (12) at a machining point by means of a radiation source with a high energy density. In order to keep the energy applied to the machining point by the radiation itself relatively low, the metallic material is supplied in the form of a wire (28) which is preheated under vacuum conditions before reaching the machining point.

IPC Classes  ?

• B23K 26/34 - Laser welding for purposes other than joining
• B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B23K 15/00 - Electron-beam welding or cutting
• B23K 26/08 - Devices involving relative movement between laser beam and workpiece
• B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
• B23K 26/342 - Build-up welding
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B23K 26/354 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting

Abstract

The invention relates to a method for the additive manufacture of three-dimensional metallic components (12), said components (12) being built layer-by-layer or section-by-section under vacuum conditions by fusing a metallic material with the component (12) at a machining point by means of a radiation source with a high energy density. In order to keep the energy applied to the machining point by the radiation itself relatively low, the metallic material is supplied in the form of a wire (28) which is preheated under vacuum conditions before reaching the machining point.

IPC Classes  ?

• B23K 26/342 - Build-up welding
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B23K 15/00 - Electron-beam welding or cutting
• B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
• B23K 26/08 - Devices involving relative movement between laser beam and workpiece
• B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure

Abstract

The invention relates to a method for the additive manufacture of three-dimensional metallic components (12), these components (12) being built layer-by-layer or section-by-section under vacuum conditions using a laser (20), by fusing a metal powder with the component (12). In order to reduce production of surplus metal powder during machining, it is suggested that the metal powder is fed to and mixed with a gas stream, said gas stream being fed to the region of a machining point of the laser (20) on the surface of said component.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

The method functions for producing a shaft-hub connection of workpieces (10, 12) made from the same or different materials, wherein, by means of a suitable material (18) as an intermediate layer between the two workpieces (10, 12) to be connected, an integrally bonded connection is produced by corresponding heating of this material (18). In order to increase the strength values of the shaft-hub connections, a rotationally symmetrical outer surface (22) is formed on a first workpiece (12), and a rotationally symmetrical inner surface (24) is formed on the second workpiece (10), the diameters of which are selected relative to one another in such a way that the pairing forms a press fit, wherein the two workpieces (10, 12) are axially pressed prior to the heating of the material (18) for the integrally bonded connection.

IPC Classes  ?

• B23K 1/00 - Soldering, e.g. brazing, or unsoldering
• B23K 1/002 - Soldering by means of induction heating
• B23K 1/005 - Soldering by means of radiant energy
• B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
• B23K 1/20 - Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
• B23K 15/00 - Electron-beam welding or cutting
• B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
• B23K 20/16 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
• B23K 20/24 - Preliminary treatment
• B23K 26/211 - Bonding by welding with interposition of special material to facilitate connection of the parts
• B23K 26/322 - Bonding taking account of the properties of the material involved involving coated metal parts
• B23K 26/323 - Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
• B23K 26/324 - Bonding taking account of the properties of the material involved involving non-metallic parts
• B23K 26/60 - Preliminary treatment
• B23K 31/00 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
• B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
• F16D 1/027 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like non-disconnectable, e.g. involving gluing, welding or the like

Goods & Services

Gas-powered welding apparatus; Gas-operated and electric welding machines; Electric shielding gas welding machines and vacuum welding machines, electron beam welding machines, laser beam welding machines; Electric welding apparatus. Treatment of materials, Namely welding, Vacuum welding, in particular electron beam welding machines and laser beam welding machines.