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公开(公告)号：US11674206B2
公开(公告)日：2023-06-13
申请号：US16463878
申请日：2017-11-30
Applicant: NIPPON STEEL CORPORATION , FINE SINTER CO., LTD.
Inventor： Manabu Kubota , Kazutaka Asabe , Yuki Ichikawa , Takeshi Nakano , Tokitake Okahira , Isao Shimazoe
CPC classification number: C22C32/0084 , C22C1/05 , C22C9/00
Abstract: There is provided a sintered friction material for railway vehicles that has excellent frictional properties and wear resistance even in a high speed range of 280 km/hour or more. The sintered friction material for railway vehicles is a green compact sintered material containing, in mass %, Cu: 50.0 to 75.0%, graphite: 5.0 to 15.0%, one or more selected from the group consisting of magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride: 1.5 to 15.0%, one or more selected from the group consisting of W and Mo: 3.0 to 30.0%, and one or more selected from the group consisting of ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel: 2.0 to 20.0%, with the balance being impurities.
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公开(公告)号：US20210180660A1
公开(公告)日：2021-06-17
申请号：US16770427
申请日：2018-12-14
Applicant: NIPPON STEEL CORPORATION , FINE SINTER CO., LTD.
Inventor： Takahiro FUJIMOTO , Manabu KUBOTA , Takanori KATO , Atsushi SAKAGUCHI , Naruo MIYABE , Takeshi NAKANO , Tokitake OKAHIRA , Isao SHIMAZOE
IPC: F16D69/02 , F16D69/04 , F16D65/097 , B61H5/00 , F16D55/226
Abstract: There is provided a brake lining for railway vehicle that can reduce brake squeal in braking. A brake lining for railway vehicle is used for a disc brake system of a railway vehicle. This brake lining includes a base plate, a sintered friction material, and a friction material supporting mechanism. The friction material supporting mechanism is disposed between the base plate and the sintered friction material and supports the sintered friction material in such a manner that the sintered friction material can move with respect to the base plate. The sintered friction material has a Young's modulus of 35.0 GPa or more.
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3.发明申请公开(公告)号：US20190078629A1
公开(公告)日：2019-03-14
申请号：US16084293
申请日：2017-03-07
Inventor： Yuiko SAKAYAMA , Takahiro FUJIMOTO , Takanori KATO , Atsushi SAKAGUCHI , Yuki ICHIKAWA , Takeshi NAKANO , Hajime TAKAMI , Kazuya GUSHIMA
IPC: F16D55/22 , F16D65/092 , B61H5/00 , B60L7/24
Abstract: A disclosed brake lining includes first and second friction member blocks, fastening members, spring members disposed in the fastening members, and a base plate. Each of the first friction member blocks including friction members is elastically fastened to the base plate by two of the fastening members that pass through the spring member and a first back plate. The two of the fastening members are disposed along a circumference of a circle centered around an axle. Each of the second friction member blocks including friction members is elastically fastened to the base plate by three of the fastening members that pass through the spring member and a second back plate. Two of the fastening members lying on opposite ends of each of the second friction member blocks are disposed along a circumference of a circle around the axle.
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4.发明申请公开(公告)号：US20180080104A1
公开(公告)日：2018-03-22
申请号：US15703387
申请日：2017-09-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , FINE SINTER CO., LTD
Inventor： Nobuyuki SHINOHARA , Yuki KAMO , Yoshihisa UEDA , Takanori YONEDA , Yusaku YOSHIDA , Masaru SUGIMOTO
Abstract: An iron alloy powder consists of, when the entirety thereof is assumed to be 100 mass %, Cr: 2.5 mass % to 3.5 mass %, Mo: 0.4 mass % to 0.6 mass %, and Fe and inevitable impurities as the balance, a mixed powder consisting of 15 mass % to 40 mass % of the iron alloy powder, 1.2 mass % to 1.8 mass % of a copper powder, 0.5 mass % to 1.0 mass % of a graphite powder, and a pure iron powder as the balance when the entire mixed powder is assumed to be 100 mass % is compacted into a compact, and the compact is sintered while transforming a structure derived from the pure iron powder into a structure in which a ferritic structure and a pearlitic structure are mixed and transforming a structure derived from the iron alloy powder into a martensitic structure.
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公开(公告)号：US11634799B2
公开(公告)日：2023-04-25
申请号：US17494213
申请日：2021-10-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , FINE SINTER CO., LTD
Inventor： Yuki Kamo , Yusaku Yoshida , Yuta Inoue
Abstract: Provided is a hard particle in which Cr and W, that are quickly diffused in Mo, are present at the same time as Ni and Mn. Specifically, the hard particle contains Cr: 5% by mass to 20% by mass, W: 2% by mass to 19% by mass, Mo: 25% by mass to 40% by mass, Ni: 10% by mass to 22% by mass, Mn: 10% by mass or less, C: 2.0% by mass or less, Si: 2.0% by mass or less, and a remainder: Fe and unavoidable impurities.
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Patent Agency Ranking
公开(公告)号：US11578775B2
公开(公告)日：2023-02-14
申请号：US16770427
申请日：2018-12-14
Applicant: NIPPON STEEL CORPORATION , FINE SINTER CO., LTD.
Inventor： Takahiro Fujimoto , Manabu Kubota , Takanori Kato , Atsushi Sakaguchi , Naruo Miyabe , Takeshi Nakano , Tokitake Okahira , Isao Shimazoe
IPC: F16D69/02 , B61H5/00 , F16D55/226 , F16D65/097 , F16D69/04
Abstract: There is provided a brake lining for a railway vehicle that can reduce brake squeal in braking. A brake lining for a railway vehicle is used for a disc brake system of a railway vehicle. This brake lining includes a base plate, a sintered friction material, and a friction material supporting mechanism. The friction material supporting mechanism is disposed between the base plate and the sintered friction material and supports the sintered friction material in such a manner that the sintered friction material can move with respect to the base plate. The sintered friction material has a Young's modulus of 35.0 GPa or more.
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公开(公告)号：US11434964B2
公开(公告)日：2022-09-06
申请号：US16064478
申请日：2016-12-21
Inventor： Takahiro Fujimoto , Atsushi Sakaguchi , Kazutaka Asabe , Kazumichi Kawasaki , Takeshi Nakano , Tokitake Okahira , Yasushi Karino , Hajime Takami
IPC: F16D65/097 , B61H5/00 , F16D65/092 , F16D65/00 , F16D69/04 , F16D55/02
Abstract: This brake lining includes: a plurality of friction members which are arranged to be spaced from each other, each of the friction members having a front surface that is to face a sliding surface of a brake disk; a back board fastened to a back surface of each of the friction members; a base plate that supports each of the friction members at a region including a center portion of each friction member; and an elastic member disposed between the base plate and the back board, on a back surface side of each friction member. Two friction members that are adjacent to each other are taken as a pair, and the back board is fastened to each of the pairs of friction members. In each pair of friction members, the two friction members are arranged along the circumferential direction of the brake disk.
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公开(公告)号：US10213830B2
公开(公告)日：2019-02-26
申请号：US15412597
申请日：2017-01-23
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , FINE SINTER CO., LTD
Inventor： Nobuyuki Shinohara , Kimihiko Ando , Yoshihisa Ueda , Yusaku Yoshida , Masaru Sugimoto
Abstract: A sintered alloy is produced from mixed powder containing first hard particles, second hard particles, graphite particles, and iron particles. The first hard particles are Fe—Mo—Ni—Co—Mn—Si—C-based alloy particles, the second hard particles are Fe—Mo—Si-based alloy particles, the mixed powder contains 5 to 50 mass % of the first hard particles, 1 to 8 mass % of the second hard particles, and 0.5 to 1.5 mass % of the graphite particles, when total mass of the first hard particles, the second hard particles, the graphite particles, and the iron particles is set as 100 mass %.
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公开(公告)号：US20190024735A1
公开(公告)日：2019-01-24
申请号：US16064478
申请日：2016-12-21
Inventor： Takahiro FUJIMOTO , Atsushi SAKAGUCHI , Kazutaka ASABE , Kazumichi KAWASAKI , Takeshi NAKANO , Tokitake OKAHIRA , Yasushi KARINO , Hajime TAKAMI
IPC: F16D65/097 , B61H5/00 , F16D55/02 , F16D65/092 , F16D69/04
Abstract: This brake lining includes: a plurality of friction members which are arranged to be spaced from each other, each of the friction members having a front surface that is to face a sliding surface of a brake disk; a back board fastened to a back surface of each of the friction members; a base plate that supports each of the friction members at a region including a center portion of each friction member; and an elastic member disposed between the base plate and the back board, on a back surface side of each friction member. Two friction members that are adjacent to each other are taken as a pair, and the back board is fastened to each of the pairs of friction members. In each pair of friction members, the two friction members are arranged along the circumferential direction of the brake disk.
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公开(公告)号：US20170209928A1
公开(公告)日：2017-07-27
申请号：US15412597
申请日：2017-01-23
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , FINE SINTER CO., LTD
Inventor： Nobuyuki SHINOHARA , Kimihiko ANDO , Yoshihisa UEDA , Yusaku YOSHIDA , Masaru SUGIMOTO
CPC classification number: B22F3/10 , B22F1/0003 , B22F1/0011 , B22F2301/35 , B22F2304/10 , B22F2998/10 , C22C1/055 , C22C29/02 , C22C29/18 , C22C33/0292 , C22C38/02 , C22C38/04 , C22C38/10 , C22C38/105 , C22C38/12 , B22F9/082 , B22F2009/0828 , B22F9/04 , B22F3/02
Abstract: A sintered alloy is produced from mixed powder containing first hard particles, second hard particles, graphite particles, and iron particles. The first hard particles are Fe—Mo—Ni—Co—Mn—Si—C-based alloy particles, the second hard particles are Fe—Mo—Si-based alloy particles, the mixed powder contains 5 to 50 mass % of the first hard particles, 1 to 8 mass % of the second hard particles, and 0.5 to 1.5 mass % of the graphite particles, when total mass of the first hard particles, the second hard particles, the graphite particles, and the iron particles is set as 100 mass %.
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