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公开(公告)号：US20210245277A1
公开(公告)日：2021-08-12
申请号：US16973612
申请日：2019-04-03
Applicant: A.L.M.T. Corp.
Inventor： Sakuya TANAKA , Koji SAWA
IPC: B23D77/02
Abstract: A reamer includes a core, a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, and a margin provided on a rear side of each the plurality of outer-circumference cutting edges in a rotational direction. A distance from an axis of rotation to a position of a center of gravity of the reamer is greater than 0.01 mm and not greater than 0.5 mm.
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公开(公告)号：US20210002769A1
公开(公告)日：2021-01-07
申请号：US16969238
申请日：2019-01-30
Applicant: Sumitomo Electric Industries, Ltd. , A.L.M.T. Corp.
Inventor： Kengo GOTO , Tomoaki IKEDA , Akihisa HOSOE , Masanori SUGISAWA , Fukuto ISHIKAWA , Hideaki MORIGAMI
Abstract: A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase; and a coating layer made of metal. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion, and a grain coating portion. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 μm.
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公开(公告)号：US10858252B2
公开(公告)日：2020-12-08
申请号：US15772582
申请日：2016-10-21
Applicant: Sumitomo Electric Industries, Ltd. , A.L.M.T. Corp.
Inventor： Masato Michiuchi , Keiichi Tsuda , Yoshihiro Minato , Tomoyuki Ishida , Akihide Matsumoto , Takehiko Hayashi
IPC: C01B21/082 , C22C1/05 , C22C29/04
Abstract: A complex carbonitride powder contains Ti as a main component element and at least one additional element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, and Si. The complex carbonitride powder includes a plurality of complex carbonitride particles containing Ti and the additional element. The plurality of complex carbonitride particles include a plurality of homogeneous composition particles where average concentrations of Ti and the additional element in each complex carbonitride particle have a difference in a range of greater than or equal to −5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in the whole complex carbonitride powder. A cross-sectional area of the homogeneous composition particles is greater than or equal to 90% of a cross-sectional area of the complex carbonitride particles 1p.
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公开(公告)号：US20200346935A1
公开(公告)日：2020-11-05
申请号：US16341624
申请日：2017-10-12
Applicant: A.L.M.T. Corp.
Inventor： Takehiko HAYASHI , Tomoyuki ISHIDA , Takahiro YAMAKAWA
IPC: C01B32/949
Abstract: Provided is a tungsten carbide powder satisfying such a condition that when the Fsss particle size thereof is represented by a (μm) and the BET particle size thereof converted from the BET specific surface area is represented by b (μm), a is 0.40 μm or more and 1.50 μm or less, and b/a is 0.17 or more and 0.35 or less.
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公开(公告)号：US10553519B2
公开(公告)日：2020-02-04
申请号：US15507938
申请日：2015-09-01
Applicant: A.L.M.T. Corp. , Sumitomo Electric Industries, Ltd.
Inventor： Tatsuya Morikawa , Takanori Kadokura , Isao Iwayama
Abstract: A heat radiating member includes: a composite portion composed of a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; and a metal layer formed on at least one surface of the composite portion and composed of a metal. A method for producing a heat radiating member includes: a preparation step to prepare a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; a powder arrangement step to dispose a metal powder composed of metal particles on at least one surface of the composite material; and a heating step to heat the composite material and the metal powder, with the metal powder disposed on the composite material, to form a metal layer composed of a metal of the metal powder on a composite portion composed of the composite material.
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Patent Agency Ranking
公开(公告)号：US20190329308A1
公开(公告)日：2019-10-31
申请号：US16473450
申请日：2017-12-08
Applicant: A.L.M.T. Corp.
Inventor： Toshiaki SHINDO , Takuya ASANUMA
Abstract: A shaped diamond die includes a polycrystalline diamond, the polycrystalline diamond having a machining hole, wherein a length D of a side of the machining hole is 100 μm or less, a corner R is 20 μm or less, the shaped diamond die includes a bearing portion, a surface roughness Sa of the bearing portion is 0.05 μm or less, and an average grain size of the polycrystalline diamond is 500 nm or less.
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公开(公告)号：US20190217443A1
公开(公告)日：2019-07-18
申请号：US16099542
申请日：2017-04-06
Applicant: A.L.M.T. Corp.
Inventor： Nobuhide Nakamura
Abstract: A super-abrasive grinding wheel includes a core and a super-abrasive grain layer provided on a surface of the core, the super-abrasive grain layer including diamond abrasive grains and CBN abrasive grains, the diamond abrasive grains and the CBN abrasive grains being fixed to the core in a single layer by a binder. The diamond abrasive grains and the CBN abrasive grains have projecting tips acting on a workpiece, the projecting tips having a variation in height of 10 μm or less, the diamond abrasive grains having their projecting tips with irregularities of 0.1 μm or more in height.
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公开(公告)号：US20190071793A1
公开(公告)日：2019-03-07
申请号：US16079733
申请日：2017-02-23
Applicant: A.L.M.T. Corp.
Inventor： Makoto Watanabe , Yoshitake Fukaya , Masahiro Katoh , Hidenobu Nishino
Abstract: The ratio of the coarse grain region in the side wall in the thickness direction thereof is 10% or more and less than 90%. The coarse grain region is defined as such a region in which crystal grains having a grain size of 1 mm or more determined by an intercept method in the height direction of the crucible occupy 95% or more of an area of a measurement region, and the fine grain region is defined as such a region in which crystal grains having a grain size of 10 μm or more and 500 μm or less determined by the intercept method in the height direction of the crucible occupy 95% or more of the area of the measurement region.
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公开(公告)号：US10011890B2
公开(公告)日：2018-07-03
申请号：US14775824
申请日：2014-03-06
Applicant: A.L.M.T. Corp.
Inventor： Takeshi Itakura , Akihiko Ikegaya , Yoshiharu Yamamoto
CPC classification number: C22B34/36 , C01G41/00 , C22B7/00 , C22B7/001 , Y02P10/214 , Y02P10/234
Abstract: A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.
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公开(公告)号：US20170191148A1
公开(公告)日：2017-07-06
申请号：US15314671
申请日：2015-05-22
Applicant: A.L.M.T. Corp.
Inventor： Ayuri Tsuji , Shigekazu Yamazaki , Akihiko Ikegaya , Noboru Uenishi
Abstract: The present heat-resistant tungsten alloy has a first phase containing W as a major component, a second phase having a carbonitride of at least one element of Ti, Zr and Hf and containing the carbonitride as a major component when W is removed, and a third phase having a carbide of at least one element of group 5A elements in the periodic table and containing the carbide as a major component when W is removed, the heat-resistant tungsten alloy having a Vickers hardness of 550 Hv or more at a room temperature, a displacement of 1 mm or more when leading to fracture, as determined in a three point bending test at 1200° C., and a 0.2% proof stress of 900 MPa or more, as determined in the three point bending test at 1200° C.
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