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    A CEMENTED CARBIDE CUTTING TOOL
    2.
    发明公开
    A CEMENTED CARBIDE CUTTING TOOL 审中-公开

    公开(公告)号：EP4389923A1

    公开(公告)日：2024-06-26

    申请号：EP22214877.7

    申请日：2022-12-20

    申请人： AB Sandvik Coromant

    发明人： GARCIA, José ,  CHYCHKO, Andrei

    IPC分类号： C22C1/055 ,  C22C29/06 ,  C22C29/08 ,  B22F3/15 ,  B22F5/00

    CPC分类号： C22C29/08 ,  C22C29/067 ,  B22F2005/00120130101 ,  C22C1/055 ,  B22F2998/1020130101 ,  B22F3/15

    摘要： The invention relates to a cutting tool comprising a cemented carbide substrate where the cemented carbide comprises a hard phase comprising WC, a mixed carbide phase and a metal binder and where the where the cemented carbide comprises the elements V, Cr, Ni and Fe in such amounts so that:
    -the weight fraction V/(V+Cr+Ni+Fe) is between 0.0030 and 0.050,
    -the weight fraction Cr/(V+Cr+Ni+Fe) is between 0.010 and 0.040
    -the weight fraction Ni/(V+Cr+Ni+Fe) is between 0.030 and less than 0.050
    -the weight fraction Fe/(V+Cr+Ni+Fe) is between 0.86 and 0.967.
    The cemented carbide according to the present invention shows toughness and hardness properties comparable with cemented carbides with Co-binder.

    ROCK DRILL INSERT
    3.
    发明公开
    ROCK DRILL INSERT 审中-公开

    公开(公告)号：EP4306671A1

    公开(公告)日：2024-01-17

    申请号：EP22184187.7

    申请日：2022-07-11

    申请人： Sandvik Mining and Construction Tools AB

    发明人： Åkesson, Leif ,  Turba, Krystof ,  Borgh, Ida ,  Lilja, Mirjam

    IPC分类号： C22C29/08 ,  B22F3/15 ,  B22F5/00

    摘要： A rock drill insert comprising a body of cemented carbide comprising hard constituents of WC in a binder phase comprising cobalt; wherein the cemented carbide comprises 4-18 wt% Co; Cr such that the Cr/Co mass ratio in the bulk of the body is 0.04 -0.19; a balance of WC and any unavoidable impurities; wherein content of the binder phase of the cemented carbide is substantially equal throughout the rock drill insert; characterized in that: said insert has a corrected CoM / wt% Co ratio between 0.72 - 0.81 and the insert is substantially free of eta-phase; wherein said corrected CoM / wt% Co ratio is calculated according to: Corrected CoM / wt% Co = (magnetic-% Co + 1.13 ∗ wt% Cr) / wt% Co where magnetic-% Co is the weight percentage of magnetic Co and wt-% Co and wt-% Cr are the weight percentage of Co and Cr in the cemented carbide, respectively.

    METHOD FOR MANUFACTURING METAL MATRIX COMPOSITE PARTS
    8.
    发明公开
    METHOD FOR MANUFACTURING METAL MATRIX COMPOSITE PARTS 审中-公开

    公开(公告)号：EP4202073A1

    公开(公告)日：2023-06-28

    申请号：EP22215709.1

    申请日：2022-12-21

    申请人： Spirit AeroSystems, Inc.

    发明人： NASSERRAFI, Rahbar ,  DANDO, Kerrick Robert ,  HICKS, JR., Gerald Eugene ,  EILERT, Theodore Joseph ,  VIERTHALER, Shawn Douglas

    IPC分类号： C22C47/04 ,  C22C47/06 ,  C22C47/20 ,  C22C49/08 ,  C22C49/14 ,  B22F3/15

    摘要： A method of manufacturing metal matrix composite (MMC) parts, including the steps of applying a metallic sheath around a bundle of MMC laminates, heating the bundle of MMC laminates in the metallic sheath at a curing or fusing temperature to consolidate the bundle of MMC laminates into a single cured or fused part, and then cooling the cured or fused part. The bundle of MMC laminates may be formed by removing surface contamination from the dry reinforcement fibers, creating a plurality of individual MMC laminates by plating dry reinforcement fibers with electroless nickel, and/or electrodeposited nickel or cobalt, and stacking each of the plurality of individual MMC laminates into a bundle. Autocatalytic and/or electroplating may be used as the primary means to incorporate fiber reinforcement into the metal matrix composite by covering and bonding fiber reinforcement into MMC laminates/plies and/or 3-D woven parts.