Patents Assigned to The Japan Steel Works, Ltd.
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Patent number: 9856553Abstract: A subject for the invention is to diminish the occurrence of streak-type segregation in producing a material comprising a Ni-based superalloy. The invention relates to a Ni-based superalloy having excellent unsusceptibility to segregation, characterized by comprising: 0.005 to 0.15 mass % of C; 8 to 22 mass % of Cr; 5 to 30 mass % of Co; equal or greater than 1 and less than 9 mass % of Mo; 5 to 21 mass % of W; 0.1 to 2.0 mass % of Al; 0.3 to 2.5 mass % of Ti; up to 0.015 mass % of B; and up to 0.01 mass % of Mg, with the remainder comprising Ni and unavoidable impurities.Type: GrantFiled: February 13, 2009Date of Patent: January 2, 2018Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Satoru Ohsaki, Tatsuya Takahashi, Koji Kajikawa, Eiji Maeda, Yoshikuni Kadoya, Ryuichi Yamamoto, Takashi Nakano
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Publication number: 20170342525Abstract: The present invention provides a Ni-based alloy having a high strength and excellent hot workability. The present invention relates to a high strength Ni-based superalloy having a composition including, in terms of % by mass: C: 0.005 to 0.05%; Fe: 0.1 to 2.0%; Cr: 10 to 20%; Co: 10 to 20%; Mo: 1.0 to 8.0%; W: 1.0 to 8.0%; Ti: 0.1 to 2.0%; Al: 2.0 to 4.5%; and Nb: 0.1 to 2.0%, with the balance being Ni and unavoidable impurities.Type: ApplicationFiled: May 26, 2016Publication date: November 30, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Koichi TAKASAWA, Takuya OHKAWA, Masato YOSHIDA
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Publication number: 20170320252Abstract: A first connecting portion (31) and a second connecting portion (33) slide over a first guide link (17) and a second guide link (19), respectively, when an operation point (OP) of a reciprocating linear motion mechanism (38) moves from an initiating position to a terminating position. A second acute angle (?2) formed between the second guide link (19) and a supporting surface (15) is greater than a first acute angle (?1) formed between the first guide link (17) and the supporting surface (15).Type: ApplicationFiled: December 10, 2015Publication date: November 9, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Katsuhiro YOSHIDA, Kenji TOMOMITSU, Daigo SAGA
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Patent number: 9800104Abstract: An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of a motor is configured by a nonmagnetic steel having a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.Type: GrantFiled: March 27, 2013Date of Patent: October 24, 2017Assignees: THE JAPAN STEEL WORKS, LTD., SANWAKOGYO Ltd.Inventors: Shinji Tanaka, Hirokazu Madarame, Toshifumi Nakajima, Kazuhiro Miyagi
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Patent number: 9797034Abstract: A high strength and high toughness cast steel material of the invention has a composition comprising 0.10 to 0.20% by mass of C, 0.10 to 0.50% by mass of Si, 0.40 to 1.20% by mass of Mn, 2.00 to 3.00% by mass of Ni, 0.20 to 0.70% by mass of Cr, and 0.10 to 0.50% by mass of Mo, and further comprising Fe and unavoidable impurities. The high strength and high toughness cast steel material of the invention is produced by subjecting an ingot having the above composition to annealing at 1,000 to 1,100° C., quenching at 850 to 950° C., tempering at 610 to 670° C., and then, if desired, stress-relief annealing at less than 610° C.Type: GrantFiled: September 24, 2010Date of Patent: October 24, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Yoshihiro Gotoh, Shinji Tanaka, Tsukasa Azuma
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Patent number: 9744698Abstract: A method for manufacturing a molded product with fine structure includes steps of, in a temperature-controlled stamper mold provided with a fine structure including a concavo-convex pattern having a width of 10 nm to 1 ?m, forming a thermoplastic molten polymer layer to be in contact with the fine structure 20 of the stamper mold having been kept at a predetermined temperature and holding the thermoplastic molten polymer layer for a predetermined time so as to transfer the fine structure of the stamper mold to the thermoplastic molten polymer layer under gravity.Type: GrantFiled: December 1, 2011Date of Patent: August 29, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Akihiro Naito, Kenichi Furuki, Hiroshi Ito, Kazutoshi Yakemoto
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Publication number: 20170241074Abstract: The present invention provides a fiber-reinforced resin intermediate material, including not only a thermoplastic resin but also a thermosetting resin, in which defects such as voids are difficult to be generated and which is excellent in shaping ability; and a method for manufacturing the same. The fiber-reinforced resin intermediate material according to the present invention is a fiber-reinforced resin intermediate material formed by attaching a resin to an outer surface part of a reinforcing fiber substrate formed of reinforcing fibers subjected to opening and heating the resin to a temperature equal to or higher than the melting point of the resin to impregnate the reinforcing fiber substrate with the resin, wherein the reinforcing fiber substrate has void space that is opened on an outer surface thereof and the resin is in a semi-impregnated state.Type: ApplicationFiled: October 16, 2015Publication date: August 24, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Akio ONO, Akira YASUE
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Patent number: 9731448Abstract: A vent assembly device for a twin-screw extruder includes a vent assembly (7) that has a vent opening (6) and that is provided in a cylinder (1) of a twin-screw extruder (11) having a left axis-side screw (2) and a right axis-side screw (3). The size of at least the vent opening (6) of the vent assembly (7) can be freely modified by forming the vent assembly (7) from a plurality of vent assembly units (7a) and by providing the plurality of vent assembly units (7a) for one vent opening (6).Type: GrantFiled: February 13, 2014Date of Patent: August 15, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Makoto Tojo, Yoshihiko Iwamoto, Jun Kakizaki
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Publication number: 20170221712Abstract: The present invention provides an efficient heat treatment such as activation treatment of impurities on a substrate such as a thick silicon wafer with large heat capacity by laser annealing. Provided is a laser annealing apparatus 1 for heat-treating a surface of a substrate 30 comprising: a pulse oscillation laser source 10 which generates a pulse laser with gentle rise time and long pulse width; a continuous wave laser source 20 which generates a near-infrared laser for assisting annealing; optical systems 12, 22 which shape and guide beams 15, 25 of the two types of lasers respectively so as to irradiate the surface of the substrate 30 therewith; and a moving device 3 which moves the substrate 30 relatively to the laser beams 15, 25 to allow scanning of the combined irradiation of the two types of laser beams.Type: ApplicationFiled: March 31, 2017Publication date: August 3, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Toshio KUDO, Naoyuki KOBAYASHI, Kazuya SANO, Toshiaki SEINO, Mitsuhiro TOYODA
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Publication number: 20170173838Abstract: A dimension in a Y-direction of a slit section (26) decreases gradually as a distance from an inflow port (23) in an X-direction increases. A cross-section of a manifold section (25) that is orthogonal to the X-direction decreases gradually as a distance from the inflow port (23) in the X-direction increases.Type: ApplicationFiled: June 26, 2015Publication date: June 22, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventor: Takahide TAKEUCHI
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Publication number: 20170165881Abstract: A multi-stage roll type sheet molding apparatus includes four or more molding rolls including a touch molding roll, a main molding roll and finish molding rolls disposed in the horizontal direction in parallel to each other, in which a molten sheet is supplied downward from above to a first nip part interposed between the touch molding roll and main molding roll, the sheet is compressed by the molding rolls, and the compressed sheet is windingly fed sequentially from the main molding roll to the finish molding rolls, thereby molding a sheet having a specific thickness. The apparatus further includes a rear-stage side rail for guiding the finish molding rolls in a horizontally movable manner and second to fourth hydraulic cylinders for horizontally moving the finish molding rolls to in such a manner that they can pressurize the sheet.Type: ApplicationFiled: December 7, 2016Publication date: June 15, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Koji SHINOBUDANI, Makoto SHIMODORI, Atsushi CHIKARAISHI
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Publication number: 20170120483Abstract: A bearing is provided which supports an inner pipe flange part. An end face flange is formed so as to be inclined on a center of an inner flange part as a supporting point and a load is applied by a pushing and pulling device through the bearing in a direction intersecting at right angles to an axial direction of a roll to incline the end face flanges at both sides by prescribed angles. Thus, a rotation moment is applied to an end face of the outer cell to adjust a crown of the outer cell.Type: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventor: Koji SHINOBUDANI
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Patent number: 9604432Abstract: The invention is to provide a coating structure material excellent in Mg corrosion resistance, which has resistance to corrosion caused by molten Mg and molten Mg alloys. The invention relates to a coating structure material including an Ni—Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni—Co-base alloy substrate, wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less.Type: GrantFiled: September 24, 2013Date of Patent: March 28, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Kouichi Takasawa, Eiji Maeda, Shinji Tanaka, Tatsuya Takahashi
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Publication number: 20170016578Abstract: An object of the present invention is to enable filling a hydrogen storage alloy uniformly and easily at the time of filling the hydrogen storage alloy. The invention relates to a method for filling a hydrogen storage alloy including, when the hydrogen storage alloy that has been made as a resin composite material by mixing hydrogen storage alloy particles or powder with a resin and carbon fiber is filled into a tank, vibrating the tank at a predetermined frequency to adjust a filling ratio of the hydrogen storage alloy in the tank.Type: ApplicationFiled: February 26, 2015Publication date: January 19, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Yoshinori KAWAHARAZAKI, Yoshihiko HAYASHI
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Publication number: 20160376687Abstract: A method for producing an iron-based sintered alloy, which is used in sliding components in pairs and has a composition including, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities, wherein the method is carried out such that the alloy has a structure in which hard particles are dispersed in an island form in a matrix and, while an area ratio thereof is kept constant, a maximum circle equivalent diameter thereof is controlled to a predetermined value of 40 to 10 ?m.Type: ApplicationFiled: June 23, 2016Publication date: December 29, 2016Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Yusuke WATANABE, Kakeru KUSADA, Tetsuo MAKIDA, Youhei SAWAMURA
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Patent number: 9511338Abstract: Using a device for producing nanocarbon, a fluidized bed is formed by supplying a low hydrocarbon and oxygen to a fluid catalyst, and nanocarbon and hydrogen are produced by a decomposition reaction of the low hydrocarbon accompanied by a self-combustion of the low hydrocarbon and the oxygen. The device includes: a fluidized bed reactor for containing the fluid catalyst and for causing the self-combustion thereof while being supplied with the low hydrocarbon and the oxygen; a gas supplying unit connected to the fluidized bed reactor for supplying the low hydrocarbon and the oxygen to the fluidized bed reactor; an exhaust gas path connected to the fluidized bed reactor for exhausting an exhaust gas in the fluidized bed reactor to outside; and a supplying unit connected to the fluidized bed reactor for supplying the fluid catalyst to the fluidized bed reactor.Type: GrantFiled: May 10, 2012Date of Patent: December 6, 2016Assignees: THE JAPAN STEEL WORKS, LTD., National University Corporation Kitami Institute of TechnologyInventors: Satoru Nakamura, Akio Tada
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Patent number: 9498764Abstract: A synthesis gas and nanocarbon production method has a lower hydrocarbon decomposition step for decomposing lower hydrocarbon to produce hydrogen and nanocarbon, a carbon dioxide reduction step for reacting a part of the nanocarbon produced with carbon dioxide to produce carbon monoxide, and a mixing step for mixing the hydrogen and carbon monoxide produced in a predetermined ratio, thereby nanocarbon and a synthesis gas having a desired gas ratio can be simultaneously produced easily.Type: GrantFiled: March 23, 2016Date of Patent: November 22, 2016Assignees: THE JAPAN STEEL WORKS, LTD., National University Corporation Kitami Institute of TechnologyInventors: Satoru Nakamura, Akio Tada
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Patent number: 9498899Abstract: A screw pair includes first and second screws having an outer circumferential surface on which a groove is spirally formed, and transports a raw material in a first direction along each of axis centers. An inner surface of the groove of each of the screws includes a first surface, which faces in the first direction, and in which the outer circumferential surfaces of the screws are formed to coincide with each other without a gap therebetween in the state where the screws mesh with each other, and a second surface, which faces in a second direction opposite to the first direction, and which forms a gap between the outer circumferential surfaces of the screws in the state where the screws mesh with each other.Type: GrantFiled: February 28, 2013Date of Patent: November 22, 2016Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Yohei Shimizu, Kiyoshi Handa, Jun Kakizaki
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Patent number: 9463429Abstract: Using a device for producing nanocarbon, a fluidized bed is formed by supplying a low hydrocarbon and oxygen to a fluid catalyst, and nanocarbon and hydrogen are produced by a decomposition reaction of the low hydrocarbon accompanied by a self-combustion of the low hydrocarbon and the oxygen. The device includes: a fluidized bed reactor for containing the fluid catalyst and for causing the self-combustion thereof while being supplied with the low hydrocarbon and the oxygen; a gas supplying unit connected to the fluidized bed reactor for supplying the low hydrocarbon and the oxygen to the fluidized bed reactor; an exhaust gas path connected to the fluidized bed reactor for exhausting an exhaust gas in the fluidized bed reactor to outside; and a supplying unit connected to the fluidized bed reactor for supplying the fluid catalyst to the fluidized bed reactor.Type: GrantFiled: February 11, 2015Date of Patent: October 11, 2016Assignees: THE JAPAN STEEL WORKS, LTD., National University Corporation Kitami Institute of TechnologyInventors: Satoru Nakamura, Akio Tada
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Patent number: 9463602Abstract: A production apparatus includes the following stations juxtaposed in the following sequence: a parison forming station for forming a parison; a built-in part attachment station where opposite sides of a center die provided with a built-in part are held between a pair of molding dies to locate the center die in the molding dies with the parison between the center die and the molding dies, and the built-in part being attached to the parison transferred to the molding dies; a molding station where the molding dies are closed to mold the hollow molded product; and a conveyance station for taking the hollow molded product out of the molding dies and conveying the hollow molded product. The center die is fixed at the built-in part attachment station, and the molding dies are configured to be movable back and forth between the built-in part attachment station and the molding station.Type: GrantFiled: April 29, 2016Date of Patent: October 11, 2016Assignees: YACHIYO INDUSTRY CO., LTD., THE JAPAN STEEL WORKS, LTD.Inventors: Takatoshi Watanabe, Satoru Araya, Masahiro Niihori, Wataru Iwase, Naoya Tabuchi, Kazuhiro Ohtaki, Yuji Hisatomi, Naoto Saito, Naoyuki Murata, Ryuichi Kawachi, Yuji Ito
