1279 patents
Page 2 of 64
Utility
Metal-fiber Reinforced Resin Material Composite
11 Aug 22
To provide a metal-fiber reinforced resin material (FRP) composite having a good appearance even when used as an automobile outer panel and not deformed even after a coating and baking process.
Masako NAKAI, Masaharu IBARAGI, Noriyuki NEGI, Masafumi USUI
Filed: 28 Aug 20
Utility
Front Pillar Outer
11 Aug 22
An objective of the present disclosure is to provide a front pillar outer that is inexpensive, lightweight and strong.
Kenichiro OTSUKA, Masafumi AZUMA, Naoki KIMOTO
Filed: 14 Jul 20
Utility
Hot Rolled Steel Sheet
11 Aug 22
Mutsumi SAKAKIBARA, Akifumi SAKAKIBARA, Tetsu ASATO, Akihiro YAMAMOTO
Filed: 15 Jun 20
Utility
Threaded Connection for Steel Pipe
11 Aug 22
A threaded connection for large diameter steel pipe exhibits high torque resistance and high sealability and, at the same time, provides a shear resistance that suits the size of the steel pipe to be connected.
Yousuke OKU, Sadao DOUCHI
Filed: 20 Aug 20
Utility
Press forming method and tool for press forming
9 Aug 22
A press forming method includes a first process of obtaining a pressing force applied to each portion of a tool by an workpiece material during press forming while independently driving the respective each portion of the tool divided into multiple portions and press forming the workpiece material, and a second process of adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for each portion of the tool to cause a processing portion of the workpiece material in which the state approaching an overload state is detected based on the pressing force to flow to other processing portions of the workpiece material.
Yasuhiro Wada, Shuji Yamamoto, Mitsuharu Yamagata
Filed: 28 Jun 19
Utility
Method for manufacturing grain-oriented electrical steel sheet and grain-oriented electrical steel sheet
9 Aug 22
A method for manufacturing a grain-oriented electrical steel sheet including a step of hot-rolling a slab containing a predetermined component composition with a remainder including Fe and an impurity to obtain a hot-rolled steel sheet, a step of, after carrying out hot-rolled steel sheet annealing on the hot-rolled steel sheet, carrying out cold rolling to obtain a cold-rolled steel sheet, a step of carrying out primary recrystallization annealing including a rapid temperature increase at an average temperature increase velocity V of 400° C./s or more and imparting of a steel sheet tensile force S on the cold-rolled steel sheet, and a step of applying an annealing separating agent to a surface of the cold-rolled steel sheet after the primary recrystallization annealing and then carrying out flattening annealing.
Nobusato Morishige, Takashi Kataoka, Haruhiko Atsumi, Yasuhiro Mayumi, Atsushi Suzuki, Tomoya Suenaga, Teruyuki Tamaki
Filed: 20 Mar 19
Utility
Steel sheet
9 Aug 22
There is provided a steel sheet including an inner layer and a hard layer formed on one or both surfaces of the inner layer, wherein each content of C and Mn in the hard layer is more than each content of C and Mn in the inner layer, a thickness of the hard layer is 20 μm or more and a total of the thickness of the hard layer is ⅖ or less of the entire sheet thickness, an average micro-Vickers hardness of the hard layer is 400 HV or more and less than 800 HV, an average micro-Vickers hardness of the inner layer is 350 HV or more and is 50 HV or more smaller than a hardness of the hard layer, and a screw dislocation density of the inner layer is 2.0×1013 m/m3 or more.
Kengo Takeda, Riki Okamoto, Kazuo Hikida, Katsuya Nakano, Yuya Suzuki, Genki Abukawa
Filed: 20 Feb 18
Utility
High strength steel sheet
9 Aug 22
High strength steel sheet having a tensile strength of 800 MPa or more comprising a middle part in sheet thickness and a soft surface layer arranged at one side or both sides of the middle part in sheet thickness, wherein each soft surface layer has a thickness of more than 10 μM and 30% or less of the sheet thickness, the soft surface layer has an average Vickers hardness of more than 0.60 time and 0.90 time or less the average Vickers hardness of the sheet thickness 1/2 position, and the soft surface layer has a nano-hardness standard deviation of 0.8 or less is provided.
Yuya Suzuki, Katsuya Nakano, Genki Abukawa, Kunio Hayashi
Filed: 20 Feb 18
Utility
Threaded connection for oil country tubular goods and method for producing threaded connection for oil country tubular goods
9 Aug 22
Masanari Kimoto, Masahiro Oshima
Filed: 10 May 18
Utility
Method for Producing Blank, Method for Producing Press-formed Part, Method for Judging Shape, Program for Judging Shape, Apparatus for Producing Blank, and Blank
4 Aug 22
The present invention has as its technical problem to provide a punching method able to stably secure a stretch-flangeability equal to or greater than the case of using a punch having a flat blade at its bottom surface.
Jun NITTA, Takashi YASUTOMI, Ryo TABATA
Filed: 10 Jul 20
Utility
Grain Oriented Electrical Steel Sheet, Forming Method for Insulation Coating of Grain Oriented Electrical Steel Sheet, and Producing Method for Grain Oriented Electrical Steel Sheet
4 Aug 22
A grain oriented electrical steel sheet includes a base steel sheet, an oxide layer, and a tension-insulation coating.
Ichiro TANAKA, Takashi KATAOKA, Kazutoshi TAKEDA, Masamitsu KUBOTA, Hirotoshi TADA
Filed: 7 Feb 20
Utility
Method for setting rolling mill, and rolling mill
2 Aug 22
A method for setting a rolling mill, the method being executed before reduction position zero point adjustment or before the start of rolling, and including: a first process of setting rolls in an open state, and with respect to each of the upper roll assembly and the lower roll assembly, adjusting positions of roll chocks in a rolling direction based on a torque acting on the work roll or a vertical roll load difference; and a second process of, after the first process, setting rolls in a kiss roll state, measuring a vertical roll load in two rotational states on a work side and a drive side, and moving roll chocks of a roll assembly on the opposite side to a reference roll simultaneously and in a same direction so that the vertical roll load difference falls within an allowable range to thereby adjust the positions of the roll chocks.
Atsushi Ishii, Kazuma Yamaguchi, Daisuke Nikkuni
Filed: 4 Mar 19
Utility
Press tooling
2 Aug 22
A press tooling includes a distance member pivotably supported by a holder; and a moving device provided on a first die unit.
Kazunori Oooka, Toshimitsu Aso, Hiroshi Yoshida, Daisuke Yasufuku, Yasuharu Tanaka, Takashi Miyagi, Junichiro Suzuki, Shinobu Yamamoto
Filed: 6 Dec 18
Utility
Continuous casting facility and continuous casting method used for thin slab casting for steel
2 Aug 22
Hiroshi Harada, Kanoko Yamamoto, Takuya Takayama, Keita Ikeda, Yui Ito
Filed: 7 Jun 19
Utility
Flux-cored wire, manufacturing method of welded joint, and welded joint
2 Aug 22
A flux-cored wire according to an aspect of the present invention includes: a steel sheath; and a flux filling the inside of the steel sheath, in which the flux contains 0.11% or more in total of a fluoride in terms of F-equivalent value, 4.30% to 7.50% of a Ti oxide in terms of TiO2 equivalent, 0.30% to 2.40% in total of an oxide in terms of mass %, and 0% to 0.60% in total of a carbonate in terms of mass %, the amount of a Ca oxide in terms of CaO is less than 0.20% in terms of mass %, the amount of CaF2 is less than 0.50%, a chemical composition of the flux-cored wire is within a predetermined range, a Z value is 2.00% or less, a V value is 5.0 to 27.0, and Ceq is 0.30% to 1.00% or less.
Hiroki Fujimoto, Kotaro Watanabe, Yasuhito Totsuka
Filed: 8 Nov 16
Utility
Structural member for automobiles
2 Aug 22
A structural member for an automobile to be disclosed includes a press-formed product formed from one steel sheet and a reinforcing member fixed to the press-formed product.
Kenichiro Otsuka
Filed: 10 Apr 18
Utility
Manufacturing method of steel sheet
2 Aug 22
A manufacturing method of a steel sheet includes: a step of performing continuous casting of molten steel having a Si content of 0.4 mass % to 3.0 mass % to obtain a slab; a step of performing hot rolling of the slab to obtain a hot-rolled steel sheet; a step of performing cold rolling of the hot-rolled steel sheet to obtain a cold-rolled steel sheet; a step of performing cold-rolled sheet annealing of the cold-rolled steel sheet; a step of performing pickling after the cold-rolled sheet annealing; a step of performing water washing after the pickling; and a step of performing drying after the water washing.
Toyomitsu Nakamura, Kenichiro Matsumura
Filed: 24 Mar 17
Utility
Hot-rolled steel sheet
2 Aug 22
A hot-rolled steel sheet includes a specific chemical composition, and includes a microstructure represented by, in vol %: retained austenite: 2% to 30%; ferrite: 20% to 85%; bainite: 10% to 60%; pearlite: 5% or less; and martensite: 10% or less.
Tatsuo Yokoi, Mitsuru Yoshida, Natsuko Sugiura, Hiroshi Shuto, Masayuki Wakita
Filed: 20 Feb 15
Utility
Hot-stamp-molded Article
28 Jul 22
A hot-stamped article according to the present invention has a plating layer being attached to a single surface in an amount of 10 g/m2 or more and 90 g/m2 or less and having a Ni content of 10 mass % or more and 25 mass % or less with a remainder including Zn and impurities on a surface of a base steel sheet having a predetermined chemical composition, in a surface layer region, a metallographic structure includes 80.0% or more of martensite and 8.0% or more of residual austenite in terms of area percentage, and the concentration of Ni in the surface layer region is 8 mass % or more.
Yuji SAKIYAMA, Yuri TODA, Kazuo HIKIDA
Filed: 28 May 20
Utility
Ferritic Heat-resistant Steel
28 Jul 22
A ferritic heat-resistant steel includes, by mass: from 0.06 to 0.11% of C; from 0.15 to 0.35% of Si; from 0.35 to 0.65% of Mn; from 0 to 0.02% of P; from 0 to 0.003% of S; from 0.005 to 0.25% of Ni; from 0.005 to 0.25% of Cu; from 2.7 to 3.3% of Co; from 8.3 to 9.7% of Cr; from 2.5 to 3.5% of W; from 0.15 to 0.25% of V; from 0.03 to 0.08% of Nb; from 0.002 to 0.04% of Ta; from 0.01 to 0.06% of Nd; from 0.006 to 0.016% of B; from 0.005 to 0.015% of N; from 0 to 0.02% of Al; and from 0 to 0.02% of O, with a balance consisting of Fe and impurities, and an amount of W, which is analyzed as an electrolytically extracted residue, [% W]ER, satisfying: −10×[% B]+0.26≤[% W]ER≤10×[% B]+0.54.
Hiroyuki HIRATA, Mitsuru YOSHIZAWA, Junichi HIGUCHI, Katsuki TANAKA
Filed: 19 Mar 20