586 patents
Page 6 of 30
Utility
Austenitic heat resistant alloy and method for producing same, and austenitic heat-resistant alloy material
15 Feb 22
Provided are an austenitic heat resistant alloy capable of exhibiting sufficient molten-salt corrosion resistance even when exposed to a molten salt of 600° C. and a production method thereof, and an austenitic heat-resistant alloy material.
Takumi Nishimoto, Yoshitaka Nishiyama
Filed: 8 Jan 19
Utility
Threaded connection
15 Feb 22
A threaded connection connecting a pair of pipes includes a pin and a box.
Satoshi Maruta, Michihiko Iwamoto
Filed: 15 Sep 17
Utility
Steel sheet
8 Feb 22
A steel sheet includes, as a chemical composition, by mass %: C: 0.05-0.30%; Si: 0.2-2.0%; Mn: 2.0-4.0%; Al: 0.001-2.000%; P: 0.100% or less; S: 0.010% or less; N: 0.010% or less; Ti: 0-0.100%; Nb: 0-0.100%; V: 0-0.100%; Cu: 0-1.00%; Ni: 0-1.00%; Mo: 0-1.00%; Cr: 0-1.00%; W: 0-0.005%; Ca: 0-0.005%; Mg: 0-0.005%; a rare earth element (REM): 0-0.010%; B: 0-0.0030%; and a remainder of Fe and impurities, in which a metallographic structure contains, by area ratio, 95% or more of a hard structure and 0-5% of residual austenite, by mass % in a cross section in a thickness direction, C1/C2 which is a ratio of an upper limit C1 of a Mn content to a lower limit C2 of the Mn content is 1.5 or less, and a bake-hardening amount BH is 150 MPa or less.
Mai Nagano, Koutarou Hayashi, Akihiro Uenishi
Filed: 8 Nov 18
Utility
Flame treatment device, apparatus for producing coated metal plate, and method for producing coated metal plate
8 Feb 22
The present invention addresses the problem of providing a flame treatment device which is capable of performing a flame treatment on a metal-based base material without requiring a preheat treatment.
Masaki Satou, Seiju Suzuki, Shuichi Sugita
Filed: 17 Jan 19
Utility
Sliding nozzle
1 Feb 22
In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates.
Shinichi Fukunaga, Kouji Kawarada, Kohei Tani, Masashi Oikawa
Filed: 8 Dec 17
Utility
Fillet welded joint and method of manufacturing thereof
1 Feb 22
In a fillet welded joint a base material tensile strength is 980 MPa or more, a carbon equivalent is 0.36 or more and 0.60 or less, a tensile strength [MPa] is 1950 times or more of the carbon equivalent [wt %], a weld metal average carbon equivalent is 0.45 or more and 0.65 or less, and at a prescribed position below a surface of a weld toe, a Vickers hardness HVbond at a boundary between the weld metal and a heat affected zone, an average value HVwmt of the Vickers hardness of the weld metal in a position 0.1-mm or more and 0.3-mm or less to the weld metal side of the boundary, and an average value HVhaz of the Vickers hardness of the heat affected zone in a position 0.1-mm or more and 0.3-mm or less to the heat affected zone side of the boundary satisfy HVbond≤HVwmt, HVbond≥HVhaz-50, and HVhaz≤350.
Shinji Kodama, Kazuki Matsuda, Yoshinari Ishida
Filed: 28 Feb 18
Utility
Structural member
1 Feb 22
A structural member is provided that includes a steel sheet with a tensile strength of 980 MPa or higher overlying another metal plate and joined thereto by welding, where a break initiating near a welded portion is less likely to be produced.
Satoshi Hirose, Koichi Hamada, Hiroki Fujimoto, Tohru Okada
Filed: 31 Oct 17
Utility
Coated steel sheet
1 Feb 22
A coated steel sheet including a steel sheet and a coating layer provided on at least part of the surface of the steel sheet, in which the coating layer has a predetermined chemical composition in terms of % by mass, and the coating layer has a granular Mg2Sn phase-containing structure in an area fraction of from 5 to 65%, and a structure containing a solid solution of Zn and Al, and the granular Mg2Sn phase-containing structure is a structure constituted with a Zn phase and a granular Mg2Sn phase having a crystal grain size of less than 1 μm dispersed in the Zn phase.
Takuya Mitsunobu
Filed: 16 Mar 18
Utility
Steel sheet and plated steel sheet
1 Feb 22
A steel sheet has a specific chemical composition and has a structure represented by, by area ratio, ferrite: 30 to 95%, and bainite: 5 to 70%.
Kohichi Sano, Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata
Filed: 4 Aug 17
Utility
Steel sheet and plated steel sheet
25 Jan 22
A steel sheet has a specific chemical composition and has a structure represented by, by area ratio, ferrite: 0 to 30%, and bainite: 70 to 100%.
Kohichi Sano, Makoto Uno, Ryoichi Nishiyama, Yuji Yamaguchi, Natsuko Sugiura, Masahiro Nakata
Filed: 4 Aug 17
Utility
Protrusion molding device, protrusion molding method, and molded article
18 Jan 22
Provided are a protrusion forming device, a protrusion forming method, and a formed article, with which a height equal to or greater than the plate thickness is possible, the edges are sharp, and cracking can be prevented.
Shinnosuke Nishijima, Kouki Tomimura
Filed: 29 Jun 16
Utility
Cutting method using a stamping press
18 Jan 22
A cutting method using a stamping press according to the present disclosure is a method to cut a workpiece that is configured from a first metal sheet and a second metal sheet joined at a weld portion and that has a heat-affected zone around the weld portion, in which the workpiece is cut using a punch.
Takashi Yasutomi, Takashi Matsuno, Tohru Yoshida
Filed: 28 Sep 16
Utility
Hot dip galvanized steel sheet and hot dip galvannealed steel sheet
18 Jan 22
A hot dip galvanized steel sheet and hot dip galvannealed steel sheet improved in uniform ductility and local ductility, yield strength and tensile strength, and low temperature impact property, characterized by having a predetermined chemical composition, having a metal structure containing, by volume %, retained austenite: over 5.0% and tempered martensite: over 5.0%, having retained austenite containing C: 0.85 mass % or more, and having a ratio [C]γgb/[P]γgb of an amount of segregation of C (number of atoms/nm2): [C]γgb to an amount of segregation of P (number of atoms/nm2): [P]γgb at prior austenite grain boundaries of 4.0 or more.
Jun Haga, Kohichi Sano, Koutarou Hayashi, Kunio Hayashi, Masaharu Kameda, Akihiro Uenishi, Hiroyuki Kawata
Filed: 30 Mar 18
Utility
Grain-oriented electrical steel sheet
18 Jan 22
A grain-oriented electrical steel sheet includes a steel sheet and an amorphous oxide layer that is formed on the steel sheet, in which the steel sheet includes, as a chemical composition, by mass %, C: 0.085% or less, Si: 0.80% to 7.00%, Mn: 1.50% or less, acid-soluble Al: 0.065% or less, S: 0.013% or less, Cu: 0% to 0.80%, N: 0% to 0.012%, P: 0% to 0.50%, Ni: 0% to 1.00%, Sn: 0% to 0.30%, Sb: 0% to 0.30%, and a remainder of Fe and impurities, and a NSIC value of a surface is 4.0% or more, the NSIC value being obtained by measuring an image clearness of the surface using an image clearness measuring device.
Shinsuke Takatani, Kenichi Murakami, Yoshiyuki Ushigami, Shunsuke Okumura, Shohji Nagano
Filed: 13 Jul 18
Utility
Film-laminated metal plate having excellent retort adhesiveness, and method for manufacturing same
11 Jan 22
A film-laminated metal plate having excellent retort adhesiveness includes: a metal plate; a resin film thermally fusion-bonded to a surface of the metal plate; and a bubble contained between the metal plate and the resin film.
Nobuo Kadowaki, Yoichiro Mori, Tadaaki Ochiai, Akihiko Hirata, Kazushi Iwakiri, Tomohiro Mizutani, Satoshi Kato
Filed: 10 Mar 17
Utility
Metalworking oil composition and metalworking method
4 Jan 22
Provided are: a metalworking oil composition having excellent workability and rust inhibiting performance, which is prepared by blending (A) at least one carboxylate selected from a polyhydric alcohol ester of a monocarboxylic acid and a monohydric alcohol ester of a polycarboxylic acid, (B) a phosphorus-containing compound, and (C) a rust inhibitor, wherein the monocarboxylic acid has 9 or more and 21 or less carbon atoms, and the content of the carboxylate is 0.6% by mass or more based on the total amount of the composition; and a metalworking method using the composition.
Naoki Nagase, Hideo Sugii, Keiji Noma, Seikichi Kitabatake, Isao Noguchi, Takeshi Kubota, Shuichi Yamazaki, Eisuke Minematsu
Filed: 24 Aug 17
Utility
Piercer plug and method of manufacturing the same
4 Jan 22
A piercer plug with increased recyclability is provided.
Yasuyoshi Hidaka, Naoya Shirasawa, Tatsuya Miyai
Filed: 9 Aug 18
Utility
Ferritic stainless steel sheet, hot coil, and automobile exhaust flange member
4 Jan 22
A ferritic stainless steel plate having a sheet thickness t of 5.0 to 12.0 mm, including a chemical composition consisting of, in mass percent, C: 0.001 to 0.010%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.04% or less, S: 0.010% or less, Cr: 10.0 to 20.0%, Ni: 0.01 to 1.0%, Ti: 0.10 to 0.30%, V: 0.01 to 0.40%, Al: 0.005 to 0.3%, N: 0.001 to 0.02%, and as necessary, one or more of B, Mo, Cu, Mg, Sn, Sb, Zr, Ta, Nb, Hf, W, Co, Ca, REM, and Ga, with the balance being Fe and unavoidable impurities, wherein in a steel micro-structure, on a cross section parallel to a rolling direction, an area ratio of structures each satisfying: major grain diameter/minor grain diameter being 5.0 or more is 90% or more, and an average minor grain diameter of the structures is 100 μm or less.
Shinichi Teraoka, Shinichi Tamura, Akihiro Nishimura
Filed: 28 Feb 17
Utility
Ni-based alloy pipe for nuclear power
4 Jan 22
An Ni-based alloy pipe for nuclear power has a chemical composition consisting of, in mass percent: C: 0.015 to 0.030%, Si: 0.10 to 0.50%, Mn: 0.10 to 0.50%, P: 0.040% or less, S: 0.015% or less, Cu: 0.01 to 0.20%, Ni: 50.0 to 65.0%, Cr: 19.0 to 35.0%, Mo: 0 to 0.40%, Co: 0.040% or less, Al: 0.30% or less, N: 0.010 to 0.080%, Ti: 0.020 to 0.180%, Zr: 0.010% or less, and Nb: 0.060% or less, the balance: Fe and impurities, and satisfying [(N−Ti×14/48)×d3≥4000] in relation to an average grain diameter, wherein a standard deviation of grain diameters is 20 μm or less, and a hardness of insides of grains is 180 HV or more.
Kiyoko Takeda, Hirokazu Okada, Osamu Miyahara
Filed: 7 Jun 18
Utility
Automotive frame member and electric vehicle
28 Dec 21
An automotive frame member includes a hat member and a closing plate, in which the hat member includes a top plate, two vertical walls, and two flanges, the two vertical walls are positioned between the top plate and the flanges, respectively, the two vertical walls face each other, the two flanges are respectively joined to the closing plate, each of the two vertical walls includes plural groove parts extending in a direction vertical to a longitudinal direction of the hat member, the groove part includes a bottom surface and two side surfaces, the two side surfaces face each other, the two side surfaces are positioned on both sides of the bottom surface, and a width a of the groove part and a depth b of the groove part in a cross section parallel to the top plate, and a height c of the vertical wall in a direction vertical to the top plate satisfy relations of 0.2≤a/c≤0.3 and 0.2≤b/c≤0.3.
Soma Sonobe
Filed: 23 Oct 19