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1.发明公开公开(公告)号：US20240253267A1
公开(公告)日：2024-08-01
申请号：US18102484
申请日：2023-01-27
Applicant: Kennametal Inc.
Inventor： Zhuqing Wang , Paul D. Prichard , Hadi Miyanaji
IPC: B28B1/00 , C04B35/56 , C04B35/626 , C04B41/00 , C04B41/88
CPC classification number: B28B1/001 , C04B35/5626 , C04B35/6261 , C04B41/0072 , C04B41/88 , C04B2235/3847 , C04B2235/405 , C04B2235/77
Abstract: Sintered cemented carbide powder compositions are disclosed for use in the production of various articles by additive manufacturing. The individual particles of the powder compositions comprise metal carbide particles sintered together with a metallic binder. The sintered cemented carbide particles comprise at least a bimodal size distribution in which the first mode has a D50 of 20 μm to 45 μm and the second mode has a D50 of 5 μm to 20 μm. The metallic binder may be present in an amount of from 9 to 11 weight percent based on total weight of the sintered cemented carbide particles. Sintered cemented carbide bodies additively manufactured from the sintered cemented carbide powder compositions are disclosed. Methods of making the sintered cemented carbide powder compositions and methods of making the sintered cemented carbide bodies are also disclosed.
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公开(公告)号：US20240253115A1
公开(公告)日：2024-08-01
申请号：US18583538
申请日：2024-02-21
Applicant: Kennametal Inc.
Inventor： Zhuqing Wang , Paul D. Prichard , Hadi Miyanaji
CPC classification number: B22F1/065 , B22F3/15 , B22F9/026 , B22F9/04 , B22F10/14 , B22F2301/15 , B22F2302/10 , B22F2304/10
Abstract: Sintered cemented carbide powder compositions for use in the production of various articles by additive manufacturing are described. The individual particles of the powder compositions comprise metal carbide particles sintered together with a metallic binder. The sintered cemented carbide particles comprise a monomodal particle size distribution in which the sintered cemented carbide particles have a D50 of greater than 12 μm and a D10 of greater than 5 μm. The metallic binder may be present in an amount of from 9 to 11 weight percent based on total weight of the sintered cemented carbide particles. Sintered cemented carbide bodies comprising the described sintered cemented carbide powder compositions are also described. Methods of making the sintered cemented carbide powder compositions, and methods of making the sintered cemented carbide bodies are also described.
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3.发明公开公开(公告)号：US20240253268A1
公开(公告)日：2024-08-01
申请号：US18102517
申请日：2023-01-27
Applicant: Kennametal Inc.
Inventor： Zhuqing Wang , Paul D. Prichard , Hadi Miyanaji
IPC: B28B1/00 , C04B35/56 , C04B35/626 , C04B35/63 , C04B35/645 , C04B41/00
CPC classification number: B28B1/001 , C04B35/5626 , C04B35/6261 , C04B35/62625 , C04B35/62655 , C04B35/6303 , C04B35/6455 , C04B41/0072 , C04B2235/3847 , C04B2235/405 , C04B2235/66
Abstract: Sintered cemented carbide powder compositions are disclosed for use in the production of various articles by additive manufacturing. The individual particles of the powder compositions comprise metal carbide particles sintered together with a metallic binder. The sintered cemented carbide particles comprise at least a bimodal size distribution in which the first mode comprising spherical sintered cemented carbide particles having a D50 of 15 μm to 45 μm and the second mode comprises non-spherical cemented carbide particles having a D50 of 5 μm to 15 μm. The metallic binder may be present in an amount of from 9 to 11 weight percent based on total weight of the sintered cemented carbide particles. Sintered cemented carbide bodies additively manufactured from the sintered cemented carbide powder compositions are disclosed. Methods of making the sintered cemented carbide powder compositions and methods of making the sintered cemented carbide bodies are also disclosed.
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公开(公告)号：US11420273B2
公开(公告)日：2022-08-23
申请号：US16655803
申请日：2019-10-17
Applicant: Kennametal Inc.
Inventor： Xiangdong D. Fang , Paul D. Prichard , Kevin M. Gamble , David Wills , Jeff Lane
Abstract: In one aspect, rotary cutting tools are described herein comprising sets of coolant channels having exit aperture in the flutes of the tools for efficient coolant delivery to multiple cutting surfaces. Briefly, a rotary cutting tool comprises a shank portion, and a cutting portion extending from the shank portion along a longitudinal axis, the cutting portion comprising flutes helically extending along the longitudinal axis and internal coolant channels comprising exit apertures in the flutes. A projection of an exit aperture of a first set of internal coolant channels intersects a rake face extending below a corner edge of the rotary cutting tool, and a projection of an exit aperture of a second set of internal coolant channels intersects a rake face below a radial cutting edge of the rotary cutting tool.
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5.发明申请公开(公告)号：US20220055103A1
公开(公告)日：2022-02-24
申请号：US17406698
申请日：2021-08-19
Applicant: Kennametal Inc.
Inventor： Paul D. Prichard
IPC: B22F3/04 , B22F10/14 , B33Y10/00 , B33Y40/20 , B29C64/165
Abstract: The present invention is directed towards a method for fabricating a three-dimensional metal, ceramic, and/or cermet part, the method comprising forming the three-dimensional metal, ceramic, and/or cermet part by an additive manufacturing technique; encapsulating the three-dimensional metal, ceramic, and/or cermet part in a conformable fugitive material to form an encapsulated three-dimensional metal, ceramic, and/or cermet part; and cold isostatic pressing the encapsulated three-dimensional metal, ceramic, and/or cermet part with pressurized incompressible fluid that contacts the conformable fugitive material. Also disclosed are three-dimensional metal, ceramic, and/or cermet parts fabricated according to said method.
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Patent Agency Ranking
公开(公告)号：US11065863B2
公开(公告)日：2021-07-20
申请号：US15437153
申请日：2017-02-20
Applicant: Kennametal Inc.
Inventor： Paul D. Prichard , Gabriel B. Collins
IPC: B33Y80/00 , B33Y10/00 , B33Y70/00 , C04B35/56 , C22C29/08 , B22F3/10 , B22F5/10 , B22F3/15 , C22C29/06 , B22F10/10
Abstract: In one aspect, particle powder compositions are provided for article manufacture by various additive manufacturing techniques. A powder composition comprises a particle component comprising sintered cemented carbide particles having apparent density of at least 6 g/cm3.
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7.发明授权公开(公告)号：US12005504B2
公开(公告)日：2024-06-11
申请号：US17406698
申请日：2021-08-19
Applicant: Kennametal Inc.
Inventor： Paul D. Prichard
Abstract: The present invention is directed towards a method for fabricating a three-dimensional metal, ceramic, and/or cermet part, the method comprising forming the three-dimensional metal, ceramic, and/or cermet part by an additive manufacturing technique; encapsulating the three-dimensional metal, ceramic, and/or cermet part in a conformable fugitive material to form an encapsulated three-dimensional metal, ceramic, and/or cermet part; and cold isostatic pressing the encapsulated three-dimensional metal, ceramic, and/or cermet part with pressurized incompressible fluid that contacts the conformable fugitive material. Also disclosed are three-dimensional metal, ceramic, and/or cermet parts fabricated according to said method.
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公开(公告)号：US10662716B2
公开(公告)日：2020-05-26
申请号：US15727307
申请日：2017-10-06
Applicant: Kennametal Inc.
Inventor： Paul D. Prichard , John Brosnahan , Roger Stark
IPC: E21B10/46 , B33Y10/00 , C22C29/08 , E21B10/08 , E21B10/43 , B22F5/00 , E21B10/627 , B22F3/105 , C04B35/56 , E21B10/50 , B33Y80/00
Abstract: Earth boring tools are described herein employing sintered cemented carbide compositions in conjunction with thin-walled architectures. In some embodiments, an earth boring tool comprises a drill bit comprising a cutting portion and a body portion, the body portion including a sintered cemented carbide shell having wall thickness of 5 percent to 25 percent of the drill bit diameter.
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公开(公告)号：US20240286311A1
公开(公告)日：2024-08-29
申请号：US18639441
申请日：2024-04-18
Applicant: KENNAMETAL INC.
Inventor： Paul D. Prichard
IPC: B28B1/00 , B22F7/02 , B22F10/14 , B22F10/28 , B22F10/34 , B22F10/38 , B22F10/64 , B22F10/66 , B23K15/00 , B33Y10/00 , B33Y70/00
CPC classification number: B28B1/001 , B22F7/02 , B22F10/28 , B22F10/38 , B23K15/0086 , B33Y10/00 , B33Y70/00 , B22F10/14 , B22F10/34 , B22F10/64 , B22F10/66
Abstract: In one aspect, a method of making a sintered article comprises providing a composite article comprising a porous exterior printed from a powder composition via one or more additive manufacturing techniques, the porous exterior defining an interior volume and providing a loose powder component in the interior volume. The porous exterior and loose powder component are simultaneously sintered to provide the sintered article comprising a sintered interior and sintered exterior.
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10.发明公开公开(公告)号：US20240253114A1
公开(公告)日：2024-08-01
申请号：US18102448
申请日：2023-01-27
Applicant: Kennametal Inc.
Inventor： Zhuqing Wang , Paul D. Prichard , Hadi Miyanaji
CPC classification number: B22F1/065 , B22F3/15 , B22F9/026 , B22F9/04 , B22F10/14 , B22F2301/15 , B22F2302/10 , B22F2304/10
Abstract: Sintered cemented carbide powder compositions for use in the production of various articles by additive manufacturing are described. The individual particles of the powder compositions comprise metal carbide particles sintered together with a metallic binder. The sintered cemented carbide particles comprise a monomodal particle size distribution in which the sintered cemented carbide particles have a D50 of greater than 12 μm and a D10 of greater than 5 μm. The metallic binder may be present in an amount of from 9 to 11 weight percent based on total weight of the sintered cemented carbide particles. Sintered cemented carbide bodies comprising the described sintered cemented carbide powder compositions are also described. Methods of making the sintered cemented carbide powder compositions, and methods of making the sintered cemented carbide bodies are also described.
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