公开(公告)号：US11932921B2

公开(公告)日：2024-03-19

申请号：US17416920

申请日：2020-03-27

申请人： Proterial, Ltd.

发明人： Shuho Koseki ,  Kenichi Inoue ,  Hiroshi Shiratori ,  Kazuya Shinagawa

IPC分类号： C22C1/02 ,  B22F1/00 ,  B33Y70/00 ,  B33Y80/00 ,  C22C27/04 ,  C22C30/00

CPC分类号： C22C1/02 ,  B22F1/00 ,  B33Y70/00 ,  C22C27/04 ,  C22C30/00 ,  B33Y80/00 ,  B22F2998/10 ,  B22F2009/041 ,  B22F9/026 ,  B22F1/142 ,  B22F2999/00 ,  B22F1/142 ,  B22F2202/13

摘要： An object is to provide an alloy composition that has a sufficient melting point for casting of an aluminum alloy, also has high hardness, and can suppress an occurrence of galling. The alloy composition of the present invention includes: a Mo—Cr-based dendritic structure 3; and a Ni—Al-based interdendritic structure 5 that fills a periphery of the Mo—Cr-based dendritic structure 3. The alloy composition of the present invention can adopt a chemical composition I in which when Mo+Cr+Ni+Al=100 at. % holds, Ni+Al=15 to 50 at. % and Mo+Cr=50 to 85 at. % hold; or a chemical composition II in which Ni+Al=40 to 70 at. % and Mo+Cr=30 to 60 at. % hold.

公开(公告)号：US20230166318A1

公开(公告)日：2023-06-01

申请号：US17895404

申请日：2022-08-25

申请人： HITACHI METALS, LTD.

发明人： Toshihiro UEHARA ,  Junichi NISHIDA

IPC分类号： B21D53/84 ,  C22C38/58 ,  F16J15/08 ,  C22C38/00 ,  C22C30/00 ,  C22F1/10 ,  C22C19/05 ,  C21D8/04 ,  C21D6/00 ,  C22C38/48 ,  C22C38/54 ,  C22C38/44 ,  C22C38/04 ,  C21D9/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/50

CPC分类号： B21D53/84 ,  C21D6/004 ,  C21D8/0436 ,  C21D9/0068 ,  C22C19/056 ,  C22C30/00 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22F1/10 ,  F16J15/08 ,  F16J15/0806 ,  C21D9/46

摘要： Provided is a metal gasket including, expressed in mass%, C: 0.10% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less (including 0%), S: 0.01% or less (including 0%), Ni: 25.0-60.0%, Cr: 10.0-20.0%, either Mo or W alone, or both Mo + W/2: 0.05-5.0%, Al: more than 0.8% to 3.0% or less, Ti: 1.5-4.0%, Nb: 0.05-2.5%, V: 1.0% or less (including 0%), B: 0.001-0.015%, Mg: 0.0005-0.01%, S/Mg: 1.0 or less, N: 0.01% or less (including 0%), and O: 0.005% or less (including 0%), with the remainder being Fe and unavoidable impurities. The metal gasket has a metal structure in which a precipitate γ′ phase having an average equivalent circle diameter of 25 nm or larger is not present within the austenite base.

公开(公告)号：US20230122004A1

公开(公告)日：2023-04-20

申请号：US17908529

申请日：2021-01-29

申请人： HITACHI METALS, LTD.

发明人： Kousuke Kuwabara ,  Shuho Koseki

IPC分类号： C22C30/00 ,  C22C1/04 ,  C22F1/16 ,  B22F10/28 ,  F04D29/02 ,  F04D29/28

摘要： A production method for an alloy member having mainly high hardness and high resistance to corrosion and produced by an additive manufacturing method, the alloy member, and a product using the alloy member are provided. The production method for an alloy member includes: an additive manufacturing step of forming a shaped member through an additive manufacturing method using an alloy powder containing elements Co, Cr, Fe, Ni, and Ti each in a range of 5 atom% to 35 atom% and containing Mo in a range exceeding 0 atom% and 8 atom% or less, the remainder being unavoidable impurities; and a heat treatment step of holding the shaped member in a temperature range higher than 500° C. and lower than 900° C. directly after the additive manufacturing step without undergoing a step of holding the shaped member in a temperature range of 1080° C. to 1180° C.

公开(公告)号：US20230099300A1

公开(公告)日：2023-03-30

申请号：US17911411

申请日：2021-03-16

申请人： HITACHI METALS, LTD.

发明人： Shuji Yamanaka ,  Takayuki Hirashige ,  Shiho Fukumoto

IPC分类号： C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/58 ,  C22C38/02 ,  C21D6/00 ,  C21D9/00 ,  C21D1/18 ,  B21D37/10

摘要： Provided are a steel that is for a die and that enables production of a die being for hot working and having both high hardness and high thermal conductivity; a die for hot working; and a manufacturing method for the same. The steel for a hot working die has a compositional makeup containing, in mass %, 0.45-0.65% of C, 0.1-0.6% of Si, 0.1-2.5% of Mn, 1.0-6.0% of Cr, 1.2-3.5% of (Mo+½W) where Mo and W are contained independently or in combination, 0.1-0.5% of V, 0.15-0.6% of Ni, 0.1-0.6% of Cu, and 0.1-0.6% of Al, the balance being Fe and inevitable impurities. Further, this die for hot working has said compositional makeup, and this manufacturing method is for manufacturing said die for hot working.

公开(公告)号：US20230077911A1

公开(公告)日：2023-03-16

申请号：US17896236

申请日：2022-08-26

申请人： Hitachi Metals, Ltd.

发明人： Kazufumi SUENAGA ,  Seiichi KASHIMURA ,  Koki HIRANO

IPC分类号： G01N21/65 ,  C08K3/22

摘要： A resin composition quality controlling method includes a step of measuring a Raman spectrum of a resin composition composed of first TiO2 particles of anatase type TiO2 and second TiO2 particles of rutile type TiO2 by irradiation with laser, and determining a concentration ratio of the first TiO2 particles to the second TiO2 particles in the resin composition based on an intensity of a first peak assigned to lattice vibration in the anatase type TiO2 and an intensity of a second peak assigned to lattice vibration in the rutile type TiO2 in the Raman spectrum.

公开(公告)号：US11585474B2

公开(公告)日：2023-02-21

申请号：US16651382

申请日：2018-09-26

申请人： Hitachi Metals, Ltd.

发明人： Yoshinori Yoshida ,  Masahiro Mori

IPC分类号： F16L25/01 ,  F16L25/00

摘要： A pipe joint connecting a first pipe having conductivity and being grounded and a second pipe including a corrugated metallic pipe member and a conductive layer having lower electric resistance than metal forming the pipe member and covering the pipe member, the pipe joint including a connection part that has conductivity and is connected to the first pipe, a housing part that has conductivity, is engaged with the connection part, and houses the second pipe inside the housing part by insertion of the second pipe along an axis direction of the second pipe, and a conductive member that includes a first part in contact at least partially with the housing part and a second part exposed to an outside of the housing part to be in contact with the conductive layer.

公开(公告)号：US11572598B2

公开(公告)日：2023-02-07

申请号：US16701177

申请日：2019-12-03

申请人： HITACHI METALS, LTD.

发明人： Junichi Nishida

IPC分类号： C21D6/00 ,  C22C38/04 ,  C22C38/44 ,  C21D1/18 ,  C22C38/48 ,  C22C38/46 ,  C22C38/00 ,  C22C38/02

摘要： Provided is a martensite-based stainless steel component that has a nitride layer on a surface of a martensite-based stainless steel with a constituent composition including, in percent by mass, 0.25 to 0.45% of C, 1.0% or less of Si, 0.1 to 1.5% of Mn, 12.0 to 15.0% of Cr, and 0.5 to 3.0% of Mo, with a remainder being Fe and impurities, wherein hardness at a position of a depth of 0.1 mm from a surface of the martensite-based stainless steel component is 650 HV or more, and a number density of carbide with an equivalent circle diameter of 1 μm or more is 100 particles/10000 μm2 in a sectional structure at the position of the depth of 0.1 mm from the surface of the martensite-based stainless steel component. Also, a method for manufacturing the martensite-based stainless steel component is provided.

公开(公告)号：US20230008828A1

公开(公告)日：2023-01-12

申请号：US17837733

申请日：2022-06-10

申请人： Hitachi Metals, Ltd.

发明人： Hiromitsu KURODA ,  Tamotsu SAKURAI ,  Yoshiki NAKADE ,  Detian HUANG ,  Xinweilong LI

IPC分类号： H01B11/18 ,  H01B13/22

摘要： A signal transmission cable includes a conductor, an insulator covering a periphery of the conductor, and a shield layer covering a periphery of the insulator. The shield layer includes a lateral winding shield portion composed of a plurality of metal wires being helically wrapped around the periphery of the insulator to cover the periphery of the insulator, and a batch plating portion composed of a hot dip plating, which is covering a periphery of the lateral winding shield portion. Where a diameter of the metal wire is d and a thickness of the batch plating portion from an outer surface of the metal wire is t, a formula t

公开(公告)号：US20220415547A1

公开(公告)日：2022-12-29

申请号：US17640382

申请日：2021-09-10

申请人： TOHOKU UNIVERSITY ,  HITACHI METALS, LTD.

发明人： Ryosuke KAINUMA ,  Toshihiro OMORI ,  Xiao XU ,  Naoki HASHIMOTO ,  Tomohito MAKI

IPC分类号： H01F1/047 ,  H01F41/02

摘要： A permanent magnet alloy according to the present disclosure contains Mn at a content not lower than 41% by atom and not higher than 53% by atom; Al at a content not lower than 46% by atom and not higher than 53% by atom; and Cu at a content not lower than 0.5% by atom and not higher than 10% by atom. The alloy contains a stable phase, having a tetragonal structure, at a ratio not lower than 50%.

公开(公告)号：US20220389535A1

公开(公告)日：2022-12-08

申请号：US17776150

申请日：2020-11-26

申请人： HITACHI METALS, LTD.

发明人： Mari YOSHIHARA ,  Takuya MURAI ,  Tadashi FUKUDA ,  Shoichi TAKAHASHI

IPC分类号： C21D11/00 ,  C22C14/00 ,  C22C19/03 ,  C21D8/02

摘要： Provided is a method for producing a Ni- or Ti-based alloy product, the method capable of locally increasing the cooling rate and effectively cooling. The method includes the steps: preliminarily processing a hot working material of a Ni- or Ti-based alloy after hot working into a predetermined shape; heating and holding the material at a solution treatment temperature to obtain a material held in a heated state; and cooling the material held in a heated state to obtain a solution-treated material. The cooling step includes placing a flow path-forming member having a space for forming a flow path for a fluid on a surface of the material held in a heated state to form a fluid flow path defined by the surface of the material held in a heated state and an inner surface of the space of the flow path-forming member; and allowing a fluid to flow in the fluid flow path so that the fluid in the flow path locally cools a part of the surface of the material held in a heated state.