公开(公告)号：US12257626B2

公开(公告)日：2025-03-25

申请号：US17348312

申请日：2021-06-15

Applicant: ARCAM AB

Inventor： Tomas Lock ,  Björn Löfving

IPC: B22F10/31 ,  B22F10/80 ,  B22F12/41 ,  B23K15/00 ,  B33Y30/00 ,  B33Y50/00 ,  G01J5/00 ,  G01J5/20 ,  G01N25/02 ,  G01N25/04 ,  G01N25/72

Abstract: Devices, systems, and methods for calibrating for an electron beam additive manufacturing system. The electron beam manufacturing system includes electron beam guns. A calibration system includes an optical pyrometer. The optical pyrometer captures thermal radiation emitted from raw material. An analysis component is communicatively coupled to the optical pyrometer. The analysis component is programmed to determine calibration parameters from information from the optical pyrometer and a phase transition temperature.

公开(公告)号：US11733187B2

公开(公告)日：2023-08-22

申请号：US17175115

申请日：2021-02-12

Applicant: Arcam AB

Inventor： David Svensson ,  Phillip Simon Mahoney

IPC: G01N23/225 ,  H01J37/305 ,  H01J37/244 ,  B22F10/28 ,  B22F12/90 ,  B22F10/36 ,  B22F10/85 ,  B22F10/31 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  B23K15/00 ,  G01N23/2252

CPC classification number: G01N23/2252 ,  B22F10/28 ,  B22F10/31 ,  B22F10/36 ,  B22F10/85 ,  B22F12/90 ,  B23K15/002 ,  B23K15/0013 ,  B23K15/0086 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  H01J37/244 ,  H01J37/305 ,  G01N2223/079 ,  G01N2223/303 ,  G01N2223/507 ,  H01J2237/2448 ,  H01J2237/30433 ,  H01J2237/3128

Abstract: An electron beam additive manufacturing system includes an electron beam source, an x-ray detection sensor configured to generate a waveform corresponding to an amount of x-rays detected by the x-ray detection sensor, and an electronic control unit comprising a processor and a non-transitory computer-readable memory, the electronic control unit communicatively coupled to the electron beam source and the x-ray detection sensor. The electronic control unit is configured to cause the electron beam source to emit an electron beam such that the electron beam impinges a verification plate, receive the waveform generated by the x-ray detection sensor in response to the x-ray detection sensor capturing x-rays emitted from the impingement of the electron beam with the verification plate, and determine a melt performance of a surface material of the verification plate based on the waveform.

公开(公告)号：US11724316B2

公开(公告)日：2023-08-15

申请号：US17852759

申请日：2022-06-29

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B33Y30/00 ,  B22F12/67 ,  B22F12/49 ,  B22F12/63 ,  B22F1/052 ,  B22F10/28 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y40/00

CPC classification number: B22F12/67 ,  B22F1/052 ,  B22F10/28 ,  B22F12/63 ,  B33Y30/00 ,  B22F12/49 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y50/02 ,  B22F2999/00 ,  B22F10/30 ,  B22F12/60

Abstract: Described is an additive manufacturing apparatus for additive manufacturing of three dimensional objects, said apparatus comprises a powder distribution unit movable across a build area for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured. Said powder distribution unit comprises at least a first and a second powder distributors essentially in parallel with each other and extending in a first direction, said first and second powder distributors are arranged to be adjustably spaced apart in a second direction transversely to said first direction which second direction is essentially in parallel with the direction of movement of said powder distribution unit over said build area.

公开(公告)号：US20220402036A1

公开(公告)日：2022-12-22

申请号：US17350026

申请日：2021-06-17

Applicant: ARCAM AB

Inventor： Anders Snis

IPC: B22F10/31 ,  H01J37/22 ,  H01J37/304 ,  B22F12/41 ,  B22F12/45 ,  B22F12/33 ,  B22F12/52 ,  B22F12/90 ,  B22F10/85 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y10/00

Abstract: Calibration systems, additive manufacturing systems employing the same, and methods of calibrating include a plurality of electron beam guns. One calibration system includes an imaging device positioned to capture one or more images of an impingement of electron beams emitted from the plurality of electron beam guns on a surface within a build chamber of the electron beam additive manufacturing system and an analysis component communicatively coupled to the imaging device. The analysis component is programmed to receive image data corresponding to the one or more images, determine one or more calibration parameters from the image data, and transmit one or more instructions to the plurality of electron beam guns in accordance with the one or more calibration parameters.

公开(公告)号：US20220118521A1

公开(公告)日：2022-04-21

申请号：US17504016

申请日：2021-10-18

Applicant: Arcam AB

Inventor： Mattias Fager ,  Simon Blomé ,  Linus Haglund ,  Joakim Ålgårdh ,  Alexander Dahl

IPC: B22F12/47 ,  B22F12/41 ,  B22F12/90 ,  B22F10/36 ,  B23K15/00 ,  B33Y30/00

Abstract: Systems, apparatus, and methods for weld tapering at a trailing edge using time multiplexing are disclosed. Systems, apparatus, and methods for control of an electron beam for welding using time multiplexing are disclosed. An example apparatus includes memory and at least one processor to execute instructions to at least: in a first portion of a line of an object being formed, control an energy beam at a first position at a first time to form a weld from a powder; and in a second portion of a line of the object being formed, control the energy beam to perform a dispersion sweep at a second position at a second time.

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.

公开(公告)号：US20210402479A1

公开(公告)日：2021-12-30

申请号：US17292278

申请日：2019-02-28

Applicant: Arcam AB

Inventor： Johan Backlund

IPC: B22F10/85 ,  B22F12/41 ,  B22F10/362 ,  B22F10/28 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/02

Abstract: A method for controlling an energy beam in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the article. The method includes steps of radiating a powder layer by the energy beam and creating a set of images of the powder layer for a set of positions on the powder layer by detecting particles emitted, backscattered or reflected from the powder layer when being radiated, comparing data representing the set of images and reference data with each other for identifying a difference between the energy beam when used on the powder layer and the reference data, with respect to at least one energy beam parameter, and adjusting the energy beam based on such an identified difference between the energy beam when used on the powder layer and the reference data.

公开(公告)号：US11161177B2

公开(公告)日：2021-11-02

申请号：US16158069

申请日：2018-10-11

Applicant: Arcam AB

Inventor： Ulric Ljungblad

IPC: B22F3/105 ,  B22F12/00 ,  G01N21/95 ,  B32B15/01 ,  C22C38/00 ,  B29C64/153 ,  B22F10/85 ,  B22F3/15 ,  C22C14/00 ,  C22C19/07 ,  C22C21/00 ,  B22F10/10

Abstract: A method for detecting defects in three-dimensional articles. Providing a model of said article. Providing a first powder layer on a substrate, directing an energy beam over said substrate causing said first powder layer to fuse in selected locations forming a first cross section of said three-dimensional article, providing a second powder layer on said substrate, directing the energy beam over said substrate causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article. A first and second image of a first and second fusion zone of said first powder layer respectively is captured. Comparing said first and second images with corresponding layers in said model. Detecting a defect in the three-dimensional article if a deviation in said first image with respect to said model is at least partially overlapping a deviation in said second image with respect to said model.

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.

公开(公告)号：US20210023617A1

公开(公告)日：2021-01-28

申请号：US16523484

申请日：2019-07-26

Applicant: ARCAM AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B22F3/105 ,  B29C64/153 ,  G06K9/32

Abstract: Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method of monitoring a powder layer includes receiving image data corresponding the powder layer supported by a powder bed within a build chamber from imaging devices, determining leading and trailing regions of interest located adjacent to a leading end and a trailing end of the moving powder distributor, respectively, the leading and trailing regions of interest moving according to movement of the moving powder distributor, selecting at least one point located in the leading region of interest from the image data, determining first characteristics of the point, when the point is located within the trailing region of interest, determining second characteristics of the point, and comparing the first characteristics to the second characteristics.