1279 patents
Page 6 of 64
Utility
Steel member, steel sheet, and methods for manufacturing same
7 Jun 22
The present invention has as its object the provision of a steel member and steel sheet having high tensile strength and toughness and excellent in hydrogen embrittlement resistance in a corrosive environment and methods for manufacturing the same.
Shinichiro Tabata, Kazuhisa Kusumi, Kazuo Hikida, Hideaki Irikawa
Filed: 5 Feb 20
Utility
Steel Sheet
2 Jun 22
The present invention relates to steel sheet realizing both formability and weldability.
Yuya SUZUKI
Filed: 24 Apr 20
Utility
Welded Joint Manufacturing Method, Welded Joint, Tempering Device, and Welding Apparatus
2 Jun 22
A welded joint manufacturing method includes: abutting a first electrode against a first steel sheet of a welded joint at a site A, which is a location at an outer side of a nugget in a sheet-plane direction in a plane running parallel to the first steel sheet; abutting a second electrode against a second steel sheet at a site B, which is a location at an outer side of the nugget in a sheet-plane direction in a plane running parallel to the first steel sheet of the welded joint, and positioned on an opposite side of the nugget from the site A; and passing a current through the welded joint between the first electrode and the second electrode.
Tohru OKADA, Hiroki FUJIMOTO, Masanori YASUYAMA, Yoshiaki NAKAZAWA
Filed: 16 Mar 20
Utility
Steel Sheet for Hot Stamping
2 Jun 22
A steel sheet for hot stamping includes: a steel sheet having a predetermined chemical composition; and a plating layer provided on a surface of the steel sheet, the plating layer having an adhesion amount of 10 g/m2 to 90 g/m2 and a Ni content of 10 mass % to 25 mass %, and containing a remainder consisting of Zn and impurities.
Daisuke MAEDA, Yuri TODA, Kazuo HIKIDA
Filed: 13 May 20
Utility
Brake Lining for Railway Vehicle
2 Jun 22
A brake lining includes a mounting plate, sliding members and elastic members.
Yuiko SAKAYAMA, Takanori KATO, Naohito YUASA, Naruo MIYABE
Filed: 5 Mar 20
Utility
Piercing machine, mandrel bar, and method for producing seamless metal pipe using the same
31 May 22
A mandrel bar of a piercing machine includes: a bar body; a coolant channel formed inside the bar body and through which a coolant flows; an inner surface cooling mechanism which is disposed in a cooling zone and is connected to the coolant channel and which, during piercing-rolling or during elongating rolling, ejects the coolant to outside of the bar body to cool an inner surface portion of a hollow shell inside the cooling zone; and an inner surface damming mechanism which is disposed adjacent to the cooling zone on a rearward side of the cooling zone and which, during piercing-rolling or during elongating rolling, suppresses the coolant that is ejected to outside of the bar body from contacting the inner surface portion of the hollow shell that is positioned rearward of the cooling zone.
Haruka Obe, Akihiro Sakamoto, Yasuhiko Daimon
Filed: 28 Nov 18
Utility
Control device, control method, and program for controlling continuous casting process
31 May 22
A control device for continuous casting continuously producing a slab by injecting a molten metal from a nozzle to a mold and extracting the molten metal while solidifying the molten metal, includes a molten metal level meter measuring a molten metal level in the mold, a main control unit obtaining an operation amount of a flow rate adjusting mechanism that adjusts a flow rate of a molten metal injected to the mold from the nozzle such that a molten metal level measured by the molten metal level meter follows a molten metal level target value, a flowmeter measuring the flow rate of the molten metal injected to the mold from the nozzle, an input disturbance correction unit obtaining a first correction amount for the operation amount of the flow rate adjusting mechanism obtained by the main control unit.
Hiroki Yamamoto
Filed: 17 Sep 19
Utility
Overlapping bonded structure
31 May 22
The present invention provides an overlapping bonded structure in which breaking of a bonded section at holes formed during bonding can be prevented when an overlapping section formed by overlapping a plurality of meal plate members is bonded by means of a mechanical bonding means or a friction stir spot-welding means.
Hiroki Fujimoto
Filed: 31 Oct 18
Utility
Grain-oriented electrical steel sheet
31 May 22
A grain-oriented electrical steel sheet includes: a base steel sheet; an intermediate layer arranged in contact with the base steel sheet; and an insulation coating arranged in contact with the intermediate layer to be an outermost surface, in which the insulation coating has a crystalline phosphide-containing layer containing a crystalline phosphide in an area in contact with the intermediate layer when viewing a cross section whose cutting direction is parallel to a thickness direction.
Seiki Takebayashi, Shuichi Nakamura, Hiroyasu Fujii, Yoshiyuki Ushigami, Shinsuke Takatani
Filed: 13 Jul 18
Utility
Shaft part
31 May 22
A shaft part excellent in static torsional strength and torsional fatigue strength containing, by mass %, essential elements of C: 0.35 to 0.70%, Si: 0.01 to 0.40%, Mn: 0.5 to 2.6%, P: 0.050% or less, S: 0.005 to 0.020%, Al: 0.010 to 0.050%, N: 0.005 to 0.025%, and O: 0.003% or less, further containing optional elements, having a balance of Fe and impurities, having a chemical composition satisfying formula (1), having at least one hole at an outer circumferential surface, having a volume ratio (R1) of 4 to 20% of retained austenite at a position of a 2 mm depth from the outer circumferential surface, having a volume ratio of retained austenite at a position of a 2 mm depth from the outer circumferential surface in an axial direction of the hole and at a position of a 20 μm depth from the surface of the hole as R2, and having a reduction rate Δγ of 40% or more of retained austenite found by the formula (A): Δγ=[(R1−R2)/R1]×100: Formula (1): 15.0≤25.9C+6.35Mn+2.88Cr+3.09Mo+2.73Ni≤27.2 (Notations of elements in formula are contents of the elements).
Tatsuya Iwasaki, Koji Watari, Hidekazu Sueno
Filed: 20 Sep 17
Utility
Metal-carbon Fiber Reinforced Resin Material Composite and Method for Manufacturing Metal-carbon Fiber Reinforced Resin Material Composite
26 May 22
What is provided is a new and improved metal-carbon fiber reinforced resin material composite in which the galvanic corrosion of dissimilar materials of a metal member is suppressed and electrodeposition coatability is excellent and a method for manufacturing the metal-carbon fiber reinforced resin material composite.
Kohei UEDA, Yasuaki KAWAMURA, Masumi KOORI, Masaharu IBARAGI
Filed: 2 Apr 19
Utility
Frame Member and Vehicle Body Structure
26 May 22
This frame member includes a corner section extending along the longitudinal direction; a first wall section extending from an end portion of the corner section in a direction orthogonal to the longitudinal direction; and a second wall section extending from an opposite end portion of the corner section, wherein the corner section is formed with a deformation starting portion from which a deformation starts when a load is input to the frame member in the longitudinal direction, the deformation starting portion having a shape protruding to an inner bending side or an outer bending side of the corner section, and an average hardness value H(K1) at a first region is equal to or greater than 330 Hv in Vickers hardness, and a 3-sigma range of a standard deviation σ in a frequency distribution of the hardness at the first region is equal to or greater than 60, the first region being located at a portion outwardly apart from an end portion of the deformation starting portion in the longitudinal direction by 10 mm in the longitudinal direction, at a depth of ¼ thickness of the frame member from a surface.
Yuri TODA, Hiroaki KUBOTA
Filed: 27 Mar 20
Utility
Threaded Connection
26 May 22
In a threaded connection of a two-step thread construction including intermediate shoulder surfaces, a break is prevented near the intermediate critical cross sections upon application of a tensile load, and the intermediate shoulder surfaces are easier to create, thus improving productivity.
Yousuke OKU, Satoshi MARUTA, Masaaki SUGINO, Alan FOTHERGILL
Filed: 20 Aug 20
Utility
Threaded connection for steel pipes
24 May 22
A threaded connection for steel pipes having improved sealing performance is provided.
Keita Inose, Masaaki Sugino
Filed: 5 Apr 18
Utility
Hot-stamped body
24 May 22
There is provided a hot-stamped body including: a steel base metal; and a metallic layer formed on a surface of the steel base metal, wherein the metallic layer includes: an interface layer that contains, in mass %, Al: 30.0 to 36.0%, has a thickness of 100 nm to 5 μm, and is located in an interface between the metallic layer and the steel base metal; and a principal layer that includes coexisting MgZn2 phases and insular FeAl2 phases, is located on the interface layer, and has a thickness of 3 μm to 40 μm.
Kohei Tokuda, Takuya Mitsunobu, Akihiro Sengoku, Kenichiro Matsumura
Filed: 20 Mar 18
Utility
Austenitic stainless steel
24 May 22
A austenitic stainless steel which has a chemical composition consisting of, by mass %, C: 0.04 to 0.12%, Si: 0.25 to 0.55%, Mn: 0.7 to 2.0%, P: 0.035% or less, S: 0.0015% or less, Cu: 0.02 to 0.80%, Co: 0.02 to 0.80%, Ni: 10.0 to 14.0%, Cr: 15.5 to 17.5%, Mo: 1.5 to 2.5%, N: 0.01 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [18.0≤Cr+Mo+1.5×Si≤20.0] and [14.5≤Ni+30×(C+N)+0.5×(Mn+Cu+Co)≤19.5].
Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
Filed: 3 Oct 18
Utility
Austenitic stainless steel weld metal and welded structure
24 May 22
A austenitic stainless steel weld metal which has a chemical composition consisting of, by mass %, C: 0.01 to 0.10%, Si: 0.20 to 0.70%, Mn: 0.8 to 2.5%, P: 0.035% or less, S: 0.0030% or less, Cu: 0.01 to 0.60%, Co: 0.01 to 1.00%, Ni: 8.0 to 12.0%, Cr: 14.5 to 17.5%, Mo: 1.0 to 2.2%, N: 0.02 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [17.5≤Cr+Mo+1.5×Si≤19.5] and [11.0≤Ni+30×(C+N)+0.5×(Mn+Cu+Co)≤17.0].
Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
Filed: 3 Oct 18
Utility
Piercer plug and method of manufacturing the same
17 May 22
A piercer plug with increased life and a method of manufacturing it are provided.
Yasuyoshi Hidaka, Yasuto Higashida, Yuichi Yamanari, Yuji Yamamoto, Tatsuya Miyai
Filed: 12 Aug 16
Utility
Metal/fiber-reinforced resin material composite
17 May 22
Masaharu Ibaragi, Noriyuki Negi, Masafumi Usui, Masako Nakai
Filed: 28 Dec 18
Utility
Flux-cored wire, manufacturing method of welded joint, and welded joint
17 May 22
According to an aspect of the present invention, there is provided a flux-cored wire including a steel sheath and a flux that fills the steel sheath.
Kotaro Watanabe, Tatsuya Kumagai, Hiroki Fujimoto, Yasuhito Totsuka
Filed: 8 Mar 16