SYSTEM AND METHOD FOR ADDITIVE METAL CASTING

    公开(公告)号:WO2023002468A1

    公开(公告)日:2023-01-26

    申请号:PCT/IL2022/050506

    申请日:2022-05-15

    申请人: MAGNUS METAL LTD.

    摘要: Methods and systems for additively casting of a metallic object include constructing a mold region of a current production layer before producing the object region of the current production layer; depositing molten metal at a predetermined temperature in working areas at the object region of the current production layer according to a building plan; and moving one or more heaters over the deposition path and heating the working areas. The heating includes (1) heating the working areas to a pre-deposition target temperature before depositing metal on the working areas to affect a bonding of the molten metal with the working areas, and/or (2) heating the working areas to a post-deposition target temperature after depositing metal on the working areas to affect a thermal cooling profile of the working areas, the heating also includes providing annealing heating to earlier production layers by heat conduction through the current production layer.

    POWDER BED FUSION ADDITIVE MANUFACTURING METHODS

    公开(公告)号:WO2021123744A1

    公开(公告)日:2021-06-24

    申请号:PCT/GB2020/053204

    申请日:2020-12-14

    申请人: RENISHAW PLC

    摘要: A powder bed fusion additive manufacturing method in which an object is built in a layer-by-layer manner. The method comprises, for each layer of a plurality of successively fused layers, melting material of the layer by irradiating the layer with one or more energy beams a first time using a first set of irradiation parameters and allowing the melted material to solidify to define a fused region of the layer and reheating the fused region by irradiating the layer a subsequent time with one or more of energy beams using a second set of irradiation parameters. The first set of irradiation parameters comprises at least one different irradiation parameter to the second set of irradiation parameters.

    PROCÉDÉ DE FABRICATION ADDITIVE D'UN OBJET EN CUIVRE

    公开(公告)号:WO2023047044A1

    公开(公告)日:2023-03-30

    申请号:PCT/FR2022/051754

    申请日:2022-09-19

    申请人: ADDUP

    发明人: BLANCHET, Etienne

    摘要: L'invention concerne un procédé de fabrication additive d'un objet en cuivre, le procédé étant un procédé de fabrication additive par dépôt de lit de poudre et fusion sélective, ledit objet étant fabriqué par la fusion sélective de couches de poudre superposées sur un support, la fusion sélective d'une couche de poudre étant obtenue par le déplacement, dit balayage, d'un faisceau laser sur ladite couche de poudre, la poudre utilisée par le procédé étant métallique et comprenant au moins 95% en masse de cuivre. Selon l'invention, chaque zone à fusionner de chaque couche de poudre est balayée au moins deux fois par le faisceau laser, le premier balayage du faisceau laser permettant de créer un film de nanoparticules en surface de la poudre présente dans chaque zone à fusionner, ce film de nanoparticules réduisant la réflectivité de la poudre dans chaque zone à fusionner, et le deuxième balayage du faisceau laser fusionnant la poudre dans chaque zone à fusionner grâce à la présence du film de nanoparticules créé par le premier balayage.

    METHOD AND APPARATUS FOR ADDITIVE MANUFACTURING

    公开(公告)号:WO2022214637A1

    公开(公告)日:2022-10-13

    申请号:PCT/EP2022/059374

    申请日:2022-04-08

    摘要: The present invention relates to a method and apparatus for forming a three-dimensional metal component comprising the steps of: depositing onto a substrate provided on a stage at least one green layer formed by means of an extruder depositing a string of feedstock material, which layer corresponding to a slice of a digital model of said three-dimensional meal component, wherein said green layer is constituted by a mixture of metal particles and binder composition, debinding said at least one green layer for forming a brown layer by impinging an energy beam from an energy source having a first setting onto a top surface of said green layer provided on said substrate on said stage, wherein said debinding removes most of said binder composition, sintering the brown layer for forming a meal layer by impinging an energy beam from an energy source having second setting onto a top surface of said brown layer, and repeating steps a-c until the three-dimensional metal component is finished.

    METHOD FOR ADDITIVE MANUFACTURE OF COMPONENT

    公开(公告)号:WO2022009371A1

    公开(公告)日:2022-01-13

    申请号:PCT/JP2020/026812

    申请日:2020-07-09

    申请人: LIXIL CORPORATION

    摘要: The disclosure concerns a method for the additive manufacture of a component (1), comprising: a) Providing a powder layer (2) on a construction panel (3) or a previously provided powder layer (4), b) Performing a first luminous exposure process of the powder layer (2) for partially heating the powder layer (2) according to a first exposure specification (5) which describes at least one three-dimensional partial area of the component (1), and c) Performing a second luminous exposure process of the same powder layer (2) for partially heating the powder layer (2) according to a second exposure specification (6) which describes at least one three-dimensional partial area of the component (1).