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    ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES
    2.
    发明申请
    ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES 审中-公开

    公开(公告)号：US20200282459A1

    公开(公告)日：2020-09-10

    申请号：US16797159

    申请日：2020-02-21

    Applicant: Arcam AB

    Inventor： Johan Nordkvist ,  Ulf Ackelid

    IPC: B22F3/105 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F3/10 ,  B23K15/00 ,  B23K15/02

    Abstract: The present invention relates to a methods, computer program products, program elements, and apparatuses for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article. The method comprising the steps of providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode and an anode, and varying an accelerator voltage between the cathode and the anode between at least a first and second predetermined value during the forming of the three-dimensional article.

    METHOD AND APPARATUS FOR FORMING A THREE-DIMENSIONAL ARTICLE
    4.
    发明申请
    METHOD AND APPARATUS FOR FORMING A THREE-DIMENSIONAL ARTICLE 审中-公开

    公开(公告)号：US20170259338A1

    公开(公告)日：2017-09-14

    申请号：US15412425

    申请日：2017-01-23

    Applicant: Arcam AB

    Inventor： Ulf Ackelid

    IPC: B22F3/105 ,  B23K15/00 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00

    CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B29C64/153 ,  B29C64/205 ,  B33Y10/00 ,  B33Y30/00 ,  Y02P10/295

    Abstract: An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed. The apparatus comprises a powder distributor configured for evenly distributing a layer of powder on top of a build table; an energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, the powder distributor comprises an elongated rod provided movable at a predetermined distance above the powder table and with its central axis in parallel with a top surface of the powder table, and a flexible foil attached onto the elongated rod and protruding from the rod towards the powder table; and an elongated device parallel with the powder distributor and arranged onto or over the powder table outside the build table, where the elongated device is arranged for mechanically touching the flexible foil.

    Powder distribution in additive manufacturing of three-dimensional articles
    6.
    发明授权
    Powder distribution in additive manufacturing of three-dimensional articles 有权
    粉末分布在三维制品的添加剂制造中

    公开(公告)号：US09505057B2

    公开(公告)日：2016-11-29

    申请号：US14252984

    申请日：2014-04-15

    Applicant: Arcam AB

    Inventor： Johan Nordkvist ,  Ulf Ackelid ,  Anders Snis

    IPC: B22F3/105 ,  B23K15/00 ,  B23K26/342 ,  B28B1/00 ,  B29C67/00 ,  B22F1/00 ,  B22F3/00 ,  B33Y10/00 ,  B33Y30/00

    CPC classification number: B22F1/0014 ,  B22F3/008 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1059 ,  B23K15/0086 ,  B23K26/342 ,  B28B1/001 ,  B29C64/153 ,  Y02P10/24 ,  Y02P10/295

    Abstract: The present invention relates to a method for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table. Said method comprising the steps of: providing at least a first and second powder tank, providing a first type of powder in said first powder tank having a first particle size distribution, providing a second type of powder in said second powder tank having a second particle size distribution, providing a first sub-layer of said first type of powder on said work table, providing a second sub-layer of said second type of powder on top of said first layer of said first type of powder, fusing said first and second sub-layers simultaneously with a high energy beam from a high energy beam source for forming a first cross section of said three-dimensional article.

    Abstract translation: 本发明涉及通过连续融合设置在工作台上的至少一层粉末床的部分来形成三维制品的方法。 所述方法包括以下步骤：提供至少第一和第二粉末罐，在所述第一粉末槽中提供具有第一粒度分布的第一类型的粉末，在所述第二粉末槽中提供第二类型的粉末，其具有第二颗粒 在所述工作台上提供所述第一类粉末的第一子层，在所述第一类粉末的第一层的顶部上提供所述第二类型粉末的第二子层，将所述第一和第二粉末熔化 子层与来自高能束源的高能束同时形成所述三维制品的第一横截面。

    Method and apparatus for forming a three-dimensional article
    7.
    发明授权
    Method and apparatus for forming a three-dimensional article 有权

    公开(公告)号：US11247274B2

    公开(公告)日：2022-02-15

    申请号：US15412425

    申请日：2017-01-23

    Applicant: Arcam AB

    Inventor： Ulf Ackelid

    IPC: B22F12/67 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B22F12/00 ,  B29C64/343 ,  B29C64/188 ,  B29C64/165 ,  B22F10/10

    Abstract: An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed. The apparatus comprises a powder distributor configured for evenly distributing a layer of powder on top of a build table; an energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, the powder distributor comprises an elongated rod provided movable at a predetermined distance above the powder table and with its central axis in parallel with a top surface of the powder table, and a flexible foil attached onto the elongated rod and protruding from the rod towards the powder table; and an elongated device parallel with the powder distributor and arranged onto or over the powder table outside the build table, where the elongated device is arranged for mechanically touching the flexible foil.

    Additive manufacturing of three-dimensional articles
    8.
    发明授权
    Additive manufacturing of three-dimensional articles 有权

    公开(公告)号：US11059123B2

    公开(公告)日：2021-07-13

    申请号：US15938646

    申请日：2018-03-28

    Applicant: Arcam AB

    Inventor： Ulf Ackelid ,  Isak Elfstroem

    IPC: B23K15/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/02 ,  B23K15/06 ,  B29C64/153 ,  B29C64/264 ,  B22F12/00 ,  B22F10/10

    Abstract: The present invention relates to an apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the apparatus comprising an electron beam source emanating an electron beam for fusing the powder material in a build tank, a hollow construction having an upper opening and a lower opening, means for moving the hollow construction between a first position and a second position, a synchronising unit for synchronising the movement of a powder distributor for applying the individual layers of powder material on the work table with the movement of the hollow construction so that the hollow metal construction is at the first position when fusing and/or heating the powder layer and at the second position when the powder distributor is distributing the powder material for forming the individual powder layers.

    Method for additive manufacturing
    9.
    发明授权
    Method for additive manufacturing 有权

    公开(公告)号：US10549348B2

    公开(公告)日：2020-02-04

    申请号：US15495225

    申请日：2017-04-24

    Applicant: Arcam AB

    Inventor： Ulf Ackelid

    IPC: B22F3/105 ,  B23K15/00 ,  B33Y10/00 ,  B33Y70/00 ,  B23K26/342 ,  B22F3/10 ,  B23K26/00 ,  B23K26/12 ,  C22C14/00 ,  C23C8/08 ,  B23K103/14 ,  B23K15/02 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/70 ,  B22F3/15 ,  B22F3/24

    Abstract: A method comprising the steps of: distributing a titanium alloy or pure titanium powder layer on a work table inside a vacuum chamber, directing at least one electron beam from at least one electron beam source over the work table causing the powder layer to fuse in selected locations, distributing a second powder layer on the work table of a titanium alloy or pure titanium inside the build chamber, directing the at least one electron beam over the work table causing the second powder layer to fuse in selected locations, and releasing a predefined concentration of the gas from the metal powder into the vacuum chamber when at least one of heating or fusing the metal powder layer, wherein at least one gas comprising hydrogen is absorbed into or chemically bonded to the titanium or titanium alloy powder to a concentration of 0.01-0.5% by weight of the hydrogen.

    ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES
    10.
    发明申请
    ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES 审中-公开

    公开(公告)号：US20180311759A1

    公开(公告)日：2018-11-01

    申请号：US15938646

    申请日：2018-03-28

    Applicant: Arcam AB

    Inventor： Ulf Ackelid ,  Isak Elfstroem

    IPC: B23K15/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/02 ,  B23K15/06

    CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B29C64/153 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00

    Abstract: The present invention relates to an apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the apparatus comprising an electron beam source emanating an electron beam for fusing the powder material in a build tank, a hollow construction having an upper opening and a lower opening, means for moving the hollow construction between a first position and a second position, a synchronising unit for synchronising the movement of a powder distributor for applying the individual layers of powder material on the work table with the movement of the hollow construction so that the hollow metal construction is at the first position when fusing and/or heating the powder layer and at the second position when the powder distributor is distributing the powder material for forming the individual powder layers.

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