586 patents
Page 13 of 30
Utility
Bumper beam and vehicle
4 May 21
A bumper beam for a vehicle that is lightweight and high in strength is provided.
Atsuo Koga, Yoshiaki Nakazawa
Filed: 15 Aug 17
Utility
Automotive exterior panel
4 May 21
Provided is a configuration that makes up for a lack of tensile rigidity and a lack of collision properties at the same time. [Solution] An automotive exterior panel according to the present invention: an exterior material 110; and a reinforcing member 120 that is in contact along an automobile inside surface of the exterior material 110 and of which a second moment of area in a direction orthogonal to the exterior material is less than or equal to 15,000 mm4 in a cross section orthogonal to a longitudinal direction of the 10 reinforcing member.
Toshiya Suzuki, Yoshiaki Nakazawa, Yasuhiro Ito, Satoshi Shirakami
Filed: 26 Jul 17
Utility
Non-oriented electrical steel sheet
4 May 21
When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
Filed: 2 Jun 17
Utility
Steel bar for downhole member, and downhole member
4 May 21
Daisuke Matsuo, Takuji Nakahata, Hisashi Amaya, Tsutomu Okuyama, Hideki Takabe
Filed: 19 May 17
Utility
Rail
4 May 21
A rail according to an aspect of the present invention is manufactured by melting steel using an electric furnace, satisfies a predetermined range as a chemical composition and particularly includes Pb: 0.0003% to 0.0020%, 95 area % or more of a region from an outer surface of a head portion to a depth of 20 mm is a pearlite structure, and a hardness in the region from the outer surface of the head portion to the depth of 20 mm is in a range of Hv 300 to Hv 500.
Masaharu Ueda, Teruhisa Miyazaki
Filed: 19 May 17
Utility
Spot welded joint and spot welding method
4 May 21
A spot welded joint in which a high CTS is obtained even if including one or more high strength steel sheets and a method of welding of the same, that is, a spot welded joint 1 including a plurality of steel sheets, wherein one or more steel sheets is a tensile strength 750 to 2500 MPa high strength steel sheet and, at a cross-section in the sheet thickness direction of the steel sheets, when defining superposed surfaces of a high strength steel sheet S1 arranged at an outermost side and another steel sheet 1B as the “plane A” and defining a plane passing through a point of one-half of a distance between a nugget end position E of a high strength steel sheet S1 side on the line L1 in the sheet thickness direction and a crossing point O of the plane A and the line L1 and parallel to the plane A as the “plane B”, at a square area SA of sides of 30 μm centered about a crossing point X of a line L2, which is separated by 250 μm to the heat affected zone side from a tangent at any position on a nugget end line NEL sandwiched between the plane A and plane B and parallel to that tangent, and a line L3 vertical to L2 included in a heat affected zone 4 having a high strength steel sheet S1 as a base material, an average value of widths of the blocks formed from lath martensite is 0.5 to 7.0 μm.
Chisato Yoshinaga, Seiji Furusako, Fuminori Watanabe, Yasunobu Miyazaki, Tohru Okada
Filed: 16 Oct 15
Utility
Non-oriented electrical steel sheet
27 Apr 21
When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 40% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
Filed: 2 Jun 17
Utility
Hot-dip zinc-based plated steel sheet
27 Apr 21
A hot-dip zinc-based plated steel sheet includes: a base steel sheet that is a metal substrate; a hot-dip zinc-based plating layer provided on the base steel sheet; and a surface treatment layer formed on at least one surface of the hot-dip zinc-based plating layer, in which the surface treatment layer contains more than or equal to 0.1 g/m2 and less than or equal to 1.2 g/m2 of granular oxide per one surface on a metal basis in which, in a temperature range of 900 to 1300 K, standard free energy of formation (ΔG0) of oxide is smaller than standard free energy of formation (ΔG0Zn) of zinc oxide and larger than standard free energy of formation (ΔG0Al) of aluminum oxide at an identical temperature, and the granular oxide has a particle size of more than or equal to 3 nm and less than or equal to 100 nm.
Koji Akioka, Yasuaki Kawamura, Akihiro Sengoku
Filed: 31 Mar 16
Utility
Titanium-containing structure and titanium product
27 Apr 21
A titanium-containing structure made of a titanium material includes: a package made of a commercially pure titanium material; and a filler packed into the package, wherein an internal pressure of the package is 10 Pa or less, the pressure being an absolute pressure, and wherein the filler includes at least one selected from titanium sponge, titanium briquette, and titanium scrap, and the filler has the same type of a chemical composition of the commercially pure titanium material.
Yoshihisa Shirai, Hideki Fujii, Tomoyuki Kitaura
Filed: 7 Oct 15
Utility
Continuous casting apparatus and continuous casting method for multilayered slab
27 Apr 21
A continuous casting apparatus for a multilayered slab includes a ladle having a molten steel supply nozzle; a tundish having a first retention portion that receives supply of the molten steel from the ladle through the molten steel supply nozzle and has a first immersion nozzle and a second retention portion that is adjacent to the first retention portion with a flow path interposed therebetween and has a second immersion nozzle; an addition mechanism that adds a predetermined element to the molten steel in the second retention portion; and a casting mold that receives supply of the molten steel from the tundish.
Hiroshi Harada, Masashi Sakamoto, Yui Ito, Katsuhiro Sasai
Filed: 31 Oct 16
Utility
High-strength steel material and production method therefor
27 Apr 21
A high-strength steel material that has a chemical composition containing, by mass %, C: 0.30 to 1.0%, Si: 0.05 to 1.0%, Mn: 16.0 to 35.0%, P: 0.030% or less, S: 0.030% or less, Al: 0.003 to 0.06%, N: 0.1% or less, V: 0 to 3.0%, Ti: 0 to 1.5%, Nb: 0 to 1.5%, Cr: 0 to 5.0%, Mo: 0 to 3.0%, Cu: 0 to 1.0%, Ni: 0 to 1.0%, B: 0 to 0.02%, Zr: 0 to 0.5%, Ta: 0 to 0.5%, Ca: 0 to 0.005%, Mg: 0 to 0.005%, and the balance: Fe and impurities, and that satisfies [V+Ti+Nb>2.0], in which: a number density of carbides/carbo-nitrides having a circle-equivalent diameter of 5 to 30 nm precipitating in the steel is 50 to 700/μm2, and a number density of carbides/carbo-nitrides having a circle-equivalent diameter of more than 100 nm precipitating in the steel is less than 10/μm2; a yield stress is 758 MPa or more; and a KISSC value obtained in a DCB test is 33.7 MPa·m0.5 or more.
Shinji Yoshida, Yuji Arai
Filed: 15 Mar 17
Utility
Secondary cooling method and secondary cooling device for casting product in continuous casting
13 Apr 21
A secondary cooling method and a secondary cooling device for a casting product casted in a continuous casting machine, the continuous casting machine including, in a secondary cooling zone below a mold, a plurality of pairs of support rolls that support the casting product from both sides of the casting product in a thickness direction, a cooling device being disposed between support rolls adjacent to each other along a casting direction of the continuous casting machine, the cooling device including a coolant pipe that supplies a coolant, and a coolant guide plate with a flat plate shape for spreading the coolant on the casting product, the coolant guide plate being disposed parallel to and spaced in a perpendicular direction from a surface of the casting product.
Yuki Kuwauchi, Hitoshi Funagane, Satoru Hayashi
Filed: 27 Jan 17
Utility
Hot forged product
13 Apr 21
There is provided a hot forged product having excellent wear resistance and fatigue strength even when the hot forged product is produced with a thermal refining treatment and a case hardening thermal treatment after hot forging omitted, and having a chemical composition consisting of, in mass %, C: 0.45 to 0.70%, Si: 0.01 to 0.70%, Mn: 1.0 to 1.7%, S: 0.01 to 0.1%, Cr: 0.05 to 0.25%, Al: 0.003 to 0.050%, N: 0.003 to 0.02% with the balance being Fe and impurities.
Kison Nishihara, Yoshiyuki Kashiwara, Hiroaki Tahira
Filed: 20 May 16
Utility
Selective emitter for thermophotovoltaic power generator
13 Apr 21
A selective emitter exhibiting heat resistance up to 1000° C., comprising a metal body, a first dielectric layer provided on one surface of the metal body, a composite layer provided on another surface of the first dielectric layer at an opposite side to the metal body side, and a second dielectric layer provided on another surface of the composite layer at an opposite side to the first dielectric layer, the composite layer being a layer provided with a metal or semiconductor dispersed in an oxide of the metal or the semiconductor.
Shinji Tokumaru, Tomohiro Uno
Filed: 29 Mar 17
Utility
Non-oriented electrical steel sheet
6 Apr 21
When a Si content (mass %) is set to [Si], an Al content (mass %) is set to [Al], and a Mn content (mass %) is set to [Mn], a parameter Q represented by “Q=[Si]+2[Al]−[Mn]” is 2.00 or more, the total mass of S contained in sulfides or oxysulfides of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, or Cd is 10% or more of the total mass of S contained in a non-oriented electrical steel sheet, a {100} crystal orientation intensity is 3.0 or more, a thickness is 0.15 mm to 0.30 mm, and an average crystal grain diameter is 65 μm to 100 μm.
Takeshi Kubota, Takashi Morohoshi, Masafumi Miyazaki
Filed: 2 Jun 17
Utility
Assembly for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection
6 Apr 21
An assembly for producing a threaded connection includes first and second tubular components with an axis of revolution and each provided at one end with at least first, second, and third continuous threaded zones provided in succession on the same helix on the outer or inner peripheral surface of the component depending on whether the threaded end is male or female.
Pierre Bernard Martin, Sebastien Colin, Xavier Mencaglia, Karine Ruffin
Filed: 21 May 14
Utility
Method for supplying hydrogen-containing reducing gas to shaft part of blast furnace
30 Mar 21
The present invention provides a novel method for supplying a reducing gas to the shaft part of a blast furnace with which a large amount of reducing gas containing hydrogen at a high concentration can be supplied to a deeper position in the blast furnace (location of the blast furnace closer to the center axis in the radial direction) and with which it is possible to reduce the total generated amount of CO2 of the CO2 amount that is reduced by conducting hydrogen smelting in the blast furnace and the CO2 amount that is generated during production of the reducing gas supplied to the blast furnace.
Nobuaki Ito, Hitoshi Donomae, Kimihito Suzuki, Kenji Nakao, Toshio Isohara
Filed: 5 Feb 16
Utility
Hot-dip galvanized steel sheet
23 Mar 21
There is provided a hot-dip galvanized steel sheet with a microstructure in a ⅛ thickness to ⅜ thickness range whose middle is a ¼ thickness from a surface of a base steel sheet, the microstructure contains ferrite phase is 50% or more and 97% or less by volume fraction, and a predetermined phase wherein at an interface between a hot-dip galvanizing layer and the base steel sheet, a Fe—Al alloy layer has an average thickness of 0.1 μm to 2.0 μm, and a difference between a maximum thickness and a minimum thickness in a steel sheet width direction is within 0.5 μm, and in a fine-grain layer directly brought into contact with the Fe—Al alloy layer, the fine-grain has a difference between a maximum thickness and a minimum thickness of the fine-grain layer in the steel sheet width direction is within 2.0 μm.
Atsushi Morishita, Taihei Kaneto, Satoshi Uchida, Tatsuya Nakada, Yuji Yamaguchi
Filed: 31 Jul 17
Utility
Flux-cored wire, manufacturing method of welded joint, and welded joint
16 Mar 21
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
Filed: 8 Mar 16
Utility
Method for shear processing
16 Mar 21
The present invention provides a method for shear processing whereby a sheared surface having a small residual stress and excellent surface properties is formed and the service life of a punch is prolonged in a shear processing for shearing, by a shear line that crosses a weld zone, a workpiece with a large thickness of level difference of a weld zone and/or obtained by welding together a steel sheet having a strength of 1000 MPa or more and another steel sheet.
Takashi Yasutomi, Masahiro Saito, Shigeru Yonemura, Tohru Yoshida
Filed: 1 Sep 17