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    System for selective laser sintering
    1.
    发明授权
    System for selective laser sintering 有权

    公开(公告)号：US11312069B2

    公开(公告)日：2022-04-26

    申请号：US16604934

    申请日：2018-04-25

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: B29C64/153 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/295 ,  B29C64/393 ,  B29C64/268 ,  B29K71/00

    Abstract: A system for producing an object from a powder by selective laser sintering. The system includes a chamber and a support platform in the chamber. A spreader applies a layer of powder to a bed surface. An irradiation source irradiates select points in the powdered layer prepared on the support platform. A radiant heater heats at least a portion of the bed surface. A temperature sensor monitors the temperature of select points on the bed surface. A controller adjusts the radiant heater in response to temperature data provided by the temperature sensor.

    Polymer Powder and Method of Preparing the Same
    3.
    发明申请
    Polymer Powder and Method of Preparing the Same 审中-公开

    公开(公告)号：US20180201783A1

    公开(公告)日：2018-07-19

    申请号：US15872598

    申请日：2018-01-16

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: C08L71/12 ,  B29C64/153 ,  C08J3/12 ,  C08G65/40 ,  C08J5/04

    Abstract: A powder composition suitable for use in laser sintering for printing a three-dimensional object. The powder composition includes a polyaryletherketone (PAEK) powder having a plurality of particles. The plurality of particles having a mean diameter of D50. The composition includes a plurality of carbon fibers having a mean length L50. L50 is greater than D50. The particles are substantially non-spherical. A portion of the carbon fiber is embedded into the particle via high intensity mixing.

    Method for processing PAEK and articles manufactured from the same
    4.
    发明授权
    Method for processing PAEK and articles manufactured from the same 有权

    公开(公告)号：US11247391B2

    公开(公告)日：2022-02-15

    申请号：US16727474

    申请日：2019-12-26

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: B29C64/153 ,  C08G65/40 ,  B33Y70/00 ,  B33Y10/00 ,  B29C67/04 ,  B29C64/357 ,  B33Y40/00 ,  B29K71/00 ,  B29K105/26 ,  B29C35/08

    Abstract: A process for manufacturing a three-dimensional object from a powder by selective sintering the powder using electromagnetic radiation. The powder includes recycled PAEK. In one embodiment, the powder includes recycled PEKK. In one embodiment, the powder includes first recycle PEKK and second recycle PEKK. In one embodiment, the powder consists essentially of recycled PEKK. The process may include the step of maintaining a bed of a selective laser sintering machine at approximately 300 degrees Celsius and applying a layer of the powder to the bed. The average in-plane tensile strength of the three-dimensional object is greater than that of a three-dimension object manufactured by selective sintering using a powder including an unused PEKK powder.

    Method for SLS of PEKK and Articles Manufactured from the Same
    5.
    发明申请
    Method for SLS of PEKK and Articles Manufactured from the Same 有权

    公开(公告)号：US20210069989A1

    公开(公告)日：2021-03-11

    申请号：US16953551

    申请日：2020-11-20

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: B29C64/393 ,  B29C64/153

    Abstract: A process for layer-by-layer manufacturing a three-dimensional object from a powder and objects made from the same is described. The process includes the step of applying a layer of a powder on a bed of a laser sintering machine. The powder includes polyetherketoneketone. The process further includes the step of solidifying selected points of the applied layer of powder by irradiation using heat energy introduced by a laser having a power L and successively repeating the step of applying the powder and the step of solidifying the applied layer of powder until all cross sections of a three-dimensional object are solidified. L is between 1 W and 20 W. In some embodiments L is between 1 and 10 W. In some embodiments, the powder is recycled PEKK powder. In some embodiments, the powder includes carbon fiber.

    Metal AM process with in situ inspection
    10.
    发明授权
    Metal AM process with in situ inspection 有权

    公开(公告)号：US10675684B2

    公开(公告)日：2020-06-09

    申请号：US15496702

    申请日：2017-04-25

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: B22F3/105 ,  G01N21/88 ,  G01N29/04 ,  G01N27/90 ,  B23K15/00 ,  B23K20/12 ,  B23K31/12 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y50/02 ,  B23P23/04 ,  B23P15/00

    Abstract: A system for inspecting a part while said part is produced by additive manufacturing, includes an additive manufacturing apparatus having a build tray, the apparatus being configured to fabricate the part layer-by-layer on the tray; an automated tool holder carrying a tool configured to deposit, add or weld layer-upon-layer of material; the tool holder and tray are configured to move relative to one another along a defined path; and an inspection device attached to the tool holder and configured to scan a layer of material in situ. The tool holder alternately arranges the tool and inspection device in a working position so that the tool holder fixes the tool in the working position for depositing, adding, or welding the layer of material and thereafter the tool holder switches said tool with the inspection device into the working position for scanning and detecting defects in the layer of material.

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