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公开(公告)号：US20190255613A1
公开(公告)日：2019-08-22
申请号：US16139914
申请日：2018-09-24
发明人： Dieter Schwarze , Jiachun Chen
IPC分类号： B22F3/105
摘要： The application relates to a method for producing or repairing a three-dimensional workpiece, the method including: depositing a sequence of layers of a raw material powder onto a substrate; after depositing a raw material powder layer, irradiating selected areas of the deposited raw material powder layer with an electromagnetic or particle radiation beam in a site selective manner in accordance with an irradiation pattern which corresponds to a geometry of at least part of a layer of the three-dimensional workpiece to be produced, the irradiation pattern including a scan pattern, wherein the substrate has a substantially single-crystalline microstructure; the irradiation is controlled so as to maintain the single-crystalline microstructure and to produce a metallurgical bond between sites of the raw material powder layer that are irradiated and the substrate and/or a previously deposited raw material powder layer, defining the scan pattern, so as to be one of a unidirectional or two directional scan pattern, rotating the scan pattern between two subsequently deposited raw material powder layers by a predetermined angle. The present application also relates to an apparatus for producing or repairing a three-dimensional workpiece.
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2.发明公开公开(公告)号：US20230191699A1
公开(公告)日：2023-06-22
申请号：US17926338
申请日：2021-05-05
发明人： Gesa Rolink , Jiachun Chen , Andreas Hoppe , Lukas Roesgen , Dieter Schwarze
IPC分类号： B29C64/282 , B29C64/371 , B29C64/393
CPC分类号： B29C64/282 , B29C64/371 , B29C64/393 , B33Y10/00
摘要： We describe a method comprising: defining an irradiation section, in particular an irradiation stripe, on a material layer to be irradiated, in an additive layer manufacturing process, with an irradiation beam scanned across the material layer, and defining, within the irradiation section, two or more parallel or substantially parallel scanning vectors for said scanning of a said irradiation beam across the material layer, wherein all scanning vectors within the irradiation section are parallel or substantially parallel with respect to each other, wherein, based on said defining of the two or more parallel or substantially parallel scanning vectors, a line results which connects a first location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a first one of the two or more parallel or substantially parallel scanning vectors and a second location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a second one of the two or more parallel or substantially parallel scanning vectors, wherein the first scanning vector and the second scanning vector are neighboring scanning vectors, wherein a distance between the first location and the second location is smaller than (i) a distance between the first location and a third location of a change in irradiation energy density of a said irradiation beam for the second one of the two or more parallel or substantially parallel scanning vectors and/or (ii) a distance between the second location and a fourth location of a change in irradiation energy density of a said irradiation beam for the first one of the two or more parallel or substantially parallel scanning vectors, and wherein an angle, which differs from 90 degrees (a) irrespectively of a geometry of a workpiece to be produced using the additive layer manufacturing process, and (b) irrespectively of an orientation of the two or more parallel or substantially parallel scanning vectors with respect to an orientation of the irradiation section, is formed (i) between the first scanning vector and the line, and/or (ii) between the second scanning vector and the line.
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公开(公告)号：US11007575B2
公开(公告)日：2021-05-18
申请号：US16139914
申请日：2018-09-24
发明人： Dieter Schwarze , Jiachun Chen
IPC分类号： B22F10/20 , C30B13/00 , B33Y50/02 , B33Y10/00 , B22F10/30 , C30B29/52 , B23P6/00 , F01D5/00 , B33Y30/00 , B33Y70/00 , B22F5/04
摘要： A method for producing or repairing a three-dimensional workpiece, the method including: depositing a sequence of layers of a raw material powder onto a substrate; after depositing a raw material powder layer, irradiating selected areas of the deposited raw material powder layer with an electromagnetic or particle radiation beam in a site selective manner in accordance with an irradiation pattern which corresponds to a geometry of at least part of a layer of the three-dimensional workpiece to be produced, the irradiation pattern including a scan pattern, wherein the substrate has a substantially single-crystalline microstructure; the irradiation is controlled so as to maintain the single-crystalline microstructure and to produce a metallurgical bond between sites of the raw material powder layer that are irradiated and the substrate and/or a previously deposited raw material powder layer, defining the scan pattern, so as to be one of a unidirectional or two directional scan pattern, rotating the scan pattern between two subsequently deposited raw material powder layers by a predetermined angle.
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公开(公告)号：US20190321916A1
公开(公告)日：2019-10-24
申请号：US16348213
申请日：2017-10-25
发明人： Dieter Schwarze , Jiachun Chen
IPC分类号： B23K26/342 , B33Y10/00 , B33Y30/00 , B33Y50/02 , C30B13/08 , C30B13/28 , C30B13/24 , C30B29/52
摘要： A method for producing or repairing a three-dimensional work piece, the method comprising the following steps: providing at least one substrate (15); depositing a first layer of a raw material powder onto the substrate (15); and irradiating selected areas of the deposited raw material powder layer with an electromagnetic or particle radiation beam (22) in a site selective manner in accordance with an irradiation pattern which corresponds to a geometry of at least part of a layer of the three-dimensional work piece to be produced, wherein the irradiation is controlled so as to produce a metallurgical bond between the substrate (15) and the raw material powder layer deposited thereon. Moreover, a use and apparatus are likewise disclosed.
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