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公开(公告)号：US12121972B1
公开(公告)日：2024-10-22
申请号：US18576745
申请日：2023-06-21
发明人： Yasuki Kido , Yoshihiro Kimura , Anongsack Paseuth
CPC分类号： B22F5/00 , C22C29/08 , B22F2005/001 , B22F2302/10
摘要： A cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, wherein in a first region of a first graph showing results obtained by carrying out line analysis along a first direction going from position X1 provided in the tungsten carbide particles to position X2 provided in the binder phase adjacent to the tungsten carbide particles, a distance PW at a maximum intensity IW of tungsten, a maximum distance PW70 showing an intensity IW70 of 70% of the maximum intensity IW, a distance PV at a maximum intensity IV of vanadium, a distance PCr at a maximum intensity ICr of chromium, a minimum distance PCo70 showing an intensity ICo70 of 70% of a maximum intensity ICo of cobalt, and a distance PCo at the maximum intensity ICo show a relationship PW
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公开(公告)号：US11951550B2
公开(公告)日：2024-04-09
申请号：US17790129
申请日：2022-01-20
发明人： Yasuki Kido , Katsumi Okamura , Takashi Sekiya
CPC分类号： B23B27/148 , C22C29/08 , B23B2224/00
摘要： A cemented carbide including tungsten carbide grains and a binder phase, in which a total content of the tungsten carbide grains and the binder phase in the cemented carbide is no less than 80 vol %, a content of the binder phase in the cemented carbide is no less than 0.1 vol % and no more than 20 vol %, in a histogram showing distribution of orientation differences between adjacent pairs each consisting of two of the tungsten carbide grains adjacent to each other in the cemented carbide, a first peak is present in a class of the orientation differences of no less than 29.5° and less than 30.5°.
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公开(公告)号：US11913096B1
公开(公告)日：2024-02-27
申请号：US18265257
申请日：2022-11-18
发明人： Yasuki Kido , Yoshihiro Kimura , Anongsack Paseuth
IPC分类号： C22C29/02
CPC分类号： C22C29/02
摘要： A cemented carbide composed of a first hard phase, a second hard phase and a binder phase, in which the first hard phase is composed of tungsten carbide particles, the second hard phase is composed of at least one first compound selected from the group consisting of TiNbC, TiNbN and TiNbCN, the second hard phase has an average particle diameter of 0.25 μm or less, the second hard phase has a dispersity of more than 0.70 and 17.0 or less, the second hard phase has a content of 0.1 vol % or more and 15 vol % or less, the binder phase contains at least one first element selected from the group consisting of iron, cobalt and nickel, and the binder phase has a content of 0.1 vol % or more and 19.0 vol % or less.
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公开(公告)号：US10987739B2
公开(公告)日：2021-04-27
申请号：US15735766
申请日：2015-12-15
摘要： Provided are a cemented carbide having excellent plastic deformation resistance and a cutting tool in which the cemented carbide is used as a substrate. A cemented carbide includes a hard phase containing tungsten carbide particles and a binder phase containing, as a main component, an iron-group element, wherein the formula B/A≤0.05 is satisfied, where A represents the number of the tungsten carbide particles, and B represents the number of tungsten carbide particles whose number of contact points with other tungsten carbide particles is 1 or less. Preferably, the iron-group element includes cobalt, and the cobalt content in the cemented carbide is 8% by mass or more. Preferably, the tungsten carbide particles have an average particle diameter of 3 μm or more.
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公开(公告)号：US11858049B2
公开(公告)日：2024-01-02
申请号：US17792711
申请日：2022-01-19
发明人： Yasuki Kido , Katsumi Okamura , Chiaki Tokuda
CPC分类号： B23B27/14 , C22C29/005 , C22C29/02 , B23B2224/28
摘要： A cemented carbide composed of a first hard phase, a second hard phase and a binder phase, in which the first hard phase is composed of tungsten carbide particles, the second hard phase is composed of at least one first compound selected from the group consisting of TiNbC, TiNbN and TiNbCN, the second hard phase has an average particle diameter of no more than 0.1 μm, the second hard phase has a dispersity of no more than 0.7, the second hard phase has a content of no less than 0.1 vol % and no more than 15 vol %, the binder phase contains at least one first element selected from the group consisting of iron, cobalt and nickel, and the binder phase has a content of no less than 0.1 vol % and no more than 20 vol %.
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公开(公告)号：US20180222804A1
公开(公告)日：2018-08-09
申请号：US15747494
申请日：2017-04-13
发明人： Yasuki Kido , Michiko Matsukawa , Keiichi Tsuda
摘要： A cemented carbide including a hard phase, a binding phase, and inevitable impurities. The hard phase satisfies a first hard phase composed mainly of tungsten carbide, and a second hard phase composed mainly of a compound. The compound contains multiple types of metallic elements including tungsten and at least one element selected from carbon, nitrogen, oxygen, and boron. The second hard phase satisfies D10/D90
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公开(公告)号：US12109630B1
公开(公告)日：2024-10-08
申请号：US18686491
申请日：2023-07-28
发明人： Yoshihiro Kimura , Yasuki Kido , Anongsack Paseuth
CPC分类号： B23B27/148 , C22C29/005 , C22C29/02 , C22C29/067 , B23B2222/28
摘要： A cemented carbide includes a plurality of tungsten carbide particles and a binder phase, wherein the cemented carbide comprises at least one first element selected from the group consisting of titanium, tantalum, niobium, zirconium, cerium, yttrium, and boron, and wherein in a first graph in a coordinate system where an X axis is a distance from a position at which cobalt exhibits a maximum intensity, and a Y axis is a normalized intensity, a maximum peak M of each of the first element is present between a peak W1 of tungsten closest to an origin and a further peak W2 of tungsten closest to the peak W1, a ratio IB/IA of an intensity IB to a maximum peak intensity IA of the maximum peak M is 0.5 or less in each of the first element, and the intensity IB is an intensity of the first element at a distance P2.
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公开(公告)号：US10519067B2
公开(公告)日：2019-12-31
申请号：US15747494
申请日：2017-04-13
发明人： Yasuki Kido , Michiko Matsukawa , Keiichi Tsuda
摘要： A cemented carbide including a hard phase, a binding phase, and inevitable impurities. The hard phase satisfies a first hard phase composed mainly of tungsten carbide, and a second hard phase composed mainly of a compound. The compound contains multiple types of metallic elements including tungsten and at least one element selected from carbon, nitrogen, oxygen, and boron. The second hard phase satisfies D10/D90
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公开(公告)号：US20180169766A1
公开(公告)日：2018-06-21
申请号：US15735766
申请日：2015-12-15
CPC分类号： B23B27/148 , B22F2005/001 , B22F2998/10 , B23B51/00 , B23B2200/0428 , B23B2200/3618 , B23B2222/28 , C22C1/05 , C22C1/051 , C22C29/005 , C22C29/08 , B22F3/02 , B22F3/1017
摘要： Provided are a cemented carbide having excellent plastic deformation resistance and a cutting tool in which the cemented carbide is used as a substrate. A cemented carbide includes a hard phase containing tungsten carbide particles and a binder phase containing, as a main component, an iron-group element, wherein the formula B/A≤0.05 is satisfied, where A represents the number of the tungsten carbide particles, and B represents the number of tungsten carbide particles whose number of contact points with other tungsten carbide particles is 1 or less. Preferably, the iron-group element includes cobalt, and the cobalt content in the cemented carbide is 8% by mass or more. Preferably, the tungsten carbide particles have an average particle diameter of 3 μm or more.
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