Cobalt Containing Patents (Class 420/95)
  • Patent number: 10364480
    Abstract: A smelting method capable of obtaining an iron-nickel alloy having a high nickel grade of 4% or higher by effectively facilitating a reduction reaction of pellets formed using a nickel oxide ore as a raw material. The present invention is a method for smelting a nickel oxide ore, by which an iron-nickel alloy is obtained by forming pellets from a nickel oxide ore and reducing and heating the pellets. In the pellet production step S1, a mixture is obtained by mixing raw materials that contain at least a nickel oxide ore and a carbonaceous reducing agent. In the reduction step S2, a furnace floor carbonaceous reducing agent is laid on the floor of the smelting furnace in advance when placing the obtained pellets in the smelting furnace and the pellets are placed on the furnace floor carbonaceous reducing agent and then reduced and heated.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: July 30, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junichi Takahashi, Taku Inoue, Shuuji Okada
  • Patent number: 10119186
    Abstract: Provided is a maraging steel excellent in fatigue characteristics, including, in terms of % by mass: C: ?0.015%, Ni: from 12.0 to 20.0%, Mo: from 3.0 to 6.0%, Co: from 5.0 to 13.0%, Al: from 0.01 to 0.3%, Ti: from 0.2 to 2.0%, O: ?0.0020%, N: ?0.0020%, and Zr: from 0.001 to 0.02%, with the balance being Fe and unavoidable impurities.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: November 6, 2018
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Kenji Sugiyama, Shigeki Ueta
  • Publication number: 20150056093
    Abstract: Provided is a maraging steel excellent in fatigue characteristics, including, in terms of % by mass: C: ?0.015%, Ni: from 12.0 to 20.0%, Mo: from 3.0 to 6.0%, Co: from 5.0 to 13.0%, Al: from 0.01 to 0.3%, Ti: from 0.2 to 2.0%, O: ?0.0020%, N: ?0.0020%, and Zr: from 0.001 to 0.02%, with the balance being Fe and unavoidable impurities.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 26, 2015
    Applicant: DAIDO STEEL CO., LTD.
    Inventors: Kenji SUGIYAMA, Shigeki UETA
  • Patent number: 8889066
    Abstract: The invention relates to a solid-solution strengthened iron-nickel alloy with a high level of ductility and an expansion coefficient <5×10?6/K in the temperature range between room temperature and ?200° C. Said alloy consists of (in wt. %): between 0.005 and 0.05% of C; <0.02% of S; between 1 and 2% of Cr; between 35 and 38% of Ni; between 0.3 and 1.5% of Mn; <0.5% of Si; between 1.0 and 3.5% of ?Mo+W; between 0.2 and 1.0% of Ti; between 0.2 and 1.0% of Nb; <0.02% of P; and between 1.0 and 4.0% of Co; Fe constituting the remainder, in addition to production-related impurities.
    Type: Grant
    Filed: October 20, 2007
    Date of Patent: November 18, 2014
    Assignee: Outokumpu VDM GmbH
    Inventors: Bernd Hoberg, Bernd De Boer
  • Publication number: 20140326849
    Abstract: A mechanical structure is provided with a crystalline superelastic alloy that is characterized by an average grain size and that exhibits a martensitic phase transformation resulting from a mechanical stress input greater than a characteristic first critical stress. A configuration of the superelastic alloy is provided with a geometric structural feature of the alloy that has an extent that is no greater than about 200 micrometers and that is no larger than the average grain size of the alloy. This geometric feature undergoes the martensitic transformation without intergranular fracture of the geometric feature.
    Type: Application
    Filed: September 13, 2012
    Publication date: November 6, 2014
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Christopher A. Schuh, Jose M. San Juan, Ying Chen
  • Patent number: 8828116
    Abstract: There is provided a metal powder for use in a selective laser sintering method for producing a three-dimensional shaped object, wherein the metal powder comprises a powder mixture of a precipitation-hardening metal composition. In particular, the metal powder of the present invention is configured to have a Fe-based component powder and a Ni-based component powder which are individually included in the powder mixture wherein a powder made of an alloy of Fe-based and Ni-based components is not included as a main powder in the powder mixture.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: September 9, 2014
    Assignee: Panasonic Corporation
    Inventor: Isao Fuwa
  • Patent number: 8808475
    Abstract: Disclosed is a creep-resistant low-expansion iron-nickel alloy that is provided with increased mechanical resistance and contains 40 to 43 wt. % of Ni, a maximum of 0.1 wt. % of C, 2.0 to 3.5 wt. % of Ti, 0.1 to 1.5 wt. % of Al, 0.1 to 1.0 wt. % of Nb, 0.005 to 0.8 wt. % of Mn, 0.005 to 0.6 wt. % of Si, a maximum of 0.5 wt. % of Co, the remainder being composed of Fe and production-related impurities. Said alloy has a mean coefficient of thermal expansion <5×10<?6>/K in the temperature range of 20 to 200 DEG C.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: August 19, 2014
    Assignee: Outokumpu VDM GmbH
    Inventors: Bodo Gehrmann, Bernd Boer
  • Publication number: 20140213375
    Abstract: The invention relates to a method of producing a martensitic steel comprising a content of other metals such that it can be hardened by intermetallic compound and carbide precipitation, with an Al content of between 0.4% and 3%. The heat shaping temperature of the last heat shaping pass of said steel is lower than the solubility temperature of the aluminum nitrides in the steel, and the treatment temperature for each potential heat treatment after said last heat shaping pass is lower than the solid-state solubility temperature of the aluminum nitrides in said steel.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 31, 2014
    Applicants: Aubert & Duval, SNECMA
    Inventors: Laurent FERRER, Philippe Heritier
  • Patent number: 8685180
    Abstract: A powder for a sintered valve sheet made of an iron-based alloy is provided, which has excellent compactibility and abrasion resistance and from which a carbide that may abrade a counterpart is not precipitated. A powder is provided, wherein a molten steel, in which carbon is controlled to be less than 0.1% by mass to avoid precipitation of a carbide, 0.5 to 8.5% by mass of Si, 10 to 25% by mass of Ni, 5 to 20% by mass of Mo, and 5 to 20% by mass of Co are contained, and a remainder includes Fe and incidental impurities, is rapidly cooled by a conventional technique such as a gas atomization method, a water atomization method, or a centrifugal force atomization method, so that a supersaturated solid solution of the alloy elements consisting mainly of austenite, which is effective in softening the powder, is formed. Since the powder has low hardness, the compactibility is excellent at the time of compression molding.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 1, 2014
    Assignee: Mitsubishi Steel Mfg. Co., Ltd.
    Inventors: Hideo Ueno, Yuji Soda, Hironori Hideshima
  • Patent number: 8679267
    Abstract: The present disclosure relates to an iron based alloy composition that may include iron present in the range of 45 to 70 atomic percent, nickel present in the range of 10 to 30 atomic percent, cobalt present in the range of 0 to 15 atomic percent, boron present in the range of 7 to 25 atomic percent, carbon present in the range of 0 to 6 atomic percent, and silicon present in the range of 0 to 2 atomic percent, wherein the alloy composition exhibits an elastic strain of greater than 0.5% and a tensile strength of greater than 1 GPa.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 25, 2014
    Assignee: The NanoSteel Company, Inc.
    Inventors: Daniel James Branagan, Brian E. Meacham, Alla V. Sergueeva
  • Publication number: 20130265127
    Abstract: Provided are a soft magnetic alloy powder, a compact made from the soft magnetic alloy powder, a powder magnetic core including the compact, and a magnetic element including the powder magnetic core. The soft magnetic alloy powder contains Fe—Ni-based particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe. The Fe—Ni-based particles have an average size of more than 1 ?m to less than 10 ?m.
    Type: Application
    Filed: November 28, 2012
    Publication date: October 10, 2013
    Applicant: TDK CORPORATION
    Inventor: TDK CORPORATION
  • Patent number: 8497027
    Abstract: A honeycomb structure and a method of forming an iron based glass forming honeycomb structure. The honeycomb structure may include at least two sheets, each having a thickness in the range of 0.01 mm to 0.15 mm, formed from an iron based glass forming alloy comprising 40 to 68 atomic percent iron, 13 to 17 atomic percent nickel, 2 to 21 atomic percent cobalt, 12 to 19 atomic percent boron, optionally 0.1 to 6 atomic percent carbon, optionally 0.3 to 4 atomic percent silicon, optionally 1 to 20 percent chromium. The sheets may be stacked, bonded together and formed into a honeycomb. The honeycomb structure may include a plurality of cells.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: July 30, 2013
    Assignee: The NanoSteel Company, Inc.
    Inventors: Daniel James Branagan, Jikou Zhou, Brian E. Meacham, Jason K. Walleser, Alla V. Sergueeva
  • Publication number: 20120225321
    Abstract: A magnetic layer that may serve as a top pole layer and bottom pole layer in a magnetic write head is disclosed. The magnetic layer has a composition represented by FeWCoXNiYVZ in which w, x, y, and z are the atomic % of Fe, Co, Ni, and V, respectively, and where w is between about 60 and 85, x is between about 10 and 30, y is between 0 and about 20, z is between about 0.1 and 3, and wherein w+x+y+z=100. An electroplating process having a plating current density of 3 to 30 mA/cm2 is used to deposit the magnetic layer and involves an electrolyte solution with a small amount of VOSO4 which is the V source. The resulting magnetic layer has a magnetic saturation flux density BS greater than 1.9 Telsa and a resistivity ? higher than 70 ?ohms-cm.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Applicant: HEADWAY TECHNOLOGIES, INC.
    Inventors: Feiyue Li, Xiaomin Liu
  • Patent number: 8083990
    Abstract: An iron-based alloy having shape memory properties and superelasticity, which has a composition comprising 25-35% by mass of Ni, 13-25% by mass of Co, 2-8% by mass of Al, and 1-20% by mass in total of at least one selected from the group consisting of 1-5% by mass of Ti, 2-10% by mass of Nb and 3-20% by mass of Ta, the balance being substantially Fe and inevitable impurities, and a recrystallization texture substantially comprising a ? phase and a ?? phase, particular crystal orientations of the ? phase being aligned, and the difference between a reverse transformation-finishing temperature and a martensitic transformation-starting temperature being 100° C. or less in the thermal hysteresis of martensitic transformation and reverse transformation.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: December 27, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Kiyohito Ishida, Ryosuke Kainuma, Yuji Sutou, Yuuki Tanaka
  • Publication number: 20110293463
    Abstract: An alloy composition comprising iron present in the range of 49 atomic percent (at %) to 65 at %, nickel present in the range of 10.0 at % to 16.5 at %, cobalt optionally present in the range of 0.1 at % to 12 at %, boron present in the range of 12.5 at % to 16.5 at %, silicon optionally present in the range of 0.1 at % to 8.0 at %, carbon optionally present in the range of 2 at % to 5 at %, chromium optionally present in the range of 2.5 at % to 13.35 at %, and niobium optionally present in the range of 1.5 at % to 2.5 at %, wherein the alloy composition exhibits spinodal glass matrix microconstituents when cooled at a rate in the range of 103K/s to 104K/s and develops a number of shear bands per linear meter in the range of greater than 1.1×102 m?1 to 107 m?1 upon application of a tensile force applied at a rate of 0.001 s?1.
    Type: Application
    Filed: May 27, 2011
    Publication date: December 1, 2011
    Inventors: Daniel James BRANAGAN, Brian E. MEACHAM, Jason K. WALLESER, Jikou ZHOU, Alla V. SERGUEEVA
  • Publication number: 20110286877
    Abstract: A process of using a molybdenum-containing binder alloy powder to produce a sintered hard metal based on a tungsten carbide includes providing a molybdenum-containing binder alloy powder with a FSSS value as determined in accordance with an ASTM B 330 standard of from 0.5 to 3 ?m and comprising from 0.1 to 10% by weight of a molybdenum in at least one of an alloyed form and a prealloyed form, less than 60% by weight of an iron, up to 60% by weight of a cobalt, and from 10 to 60% by weight of a nickel. The molybdenum-containing binder alloy powder is incorporated into a hard metal. The hard metal is sintered so as to provide the liquid-phase-sintered hard metal based on a tungsten carbide.
    Type: Application
    Filed: October 2, 2009
    Publication date: November 24, 2011
    Inventor: Benno Gries
  • Publication number: 20110226386
    Abstract: A steel characterized in that its composition is percentages by weight: C=0.18-0.30% Co=1.5-4% Cr=2-5% Al=1-2% Mo+W/2=1-4% V=traces-0.3% Nb=traces-0.1% B=traces-30 ppm Ni=11-16% where Ni?7+3.5 Al Si=traces-1.0% Mn=traces-4.0% Ca=traces-20 ppm Rare earths=traces-100 ppm if N?10 ppm, Ti+Zr/2=traces-100 ppm where Ti+Zr/2?10 N if 10 ppm<N?20 ppm, Ti+Zr/2=traces-150 ppm O=traces-50 ppm N=traces-20 ppm S=traces-20 ppm Cu=traces-1% P=traces-200 ppm the remainder being iron and inevitable impurities resulting from the smelting. A process for manufacturing a part from this steel, and part thus obtained.
    Type: Application
    Filed: July 8, 2009
    Publication date: September 22, 2011
    Inventor: François Roch
  • Publication number: 20110056589
    Abstract: Disclosed is an iron-nickel alloy having the following composition, in % by mass: C 0.05 to 0.5%, Cr 0.2 to 2.0%, Ni 33 to 42%, Mn<0.1%, Si<0.1%, Mo 1.5 to 4.0%, Nb 0.01 to 0.5%, Al 0.1 to 0.8%, Mg 0.001 to 0.01%, V max. 0.1%, W 0.1 to 1.5%, Co max. 2.0%, the remainder Fe, and production-related impurities.
    Type: Application
    Filed: April 29, 2009
    Publication date: March 10, 2011
    Applicant: THYSSENKRUPP VDM GMBH
    Inventors: Bernd De Boer, Bodo Gehrmann
  • Publication number: 20100316523
    Abstract: A powder for a sintered valve sheet made of an iron-based alloy is provided, which has excellent compactibility and abrasion resistance and from which a carbide that may abrade a counterpart is not precipitated. A powder is provided, wherein a molten steel, in which carbon is controlled to be less than 0.1% by mass to avoid precipitation of a carbide, 0.5 to 8.5% by mass of Si, 10 to 25% by mass of Ni, 5 to 20% by mass of Mo, and 5 to 20% by mass of Co are contained, and a remainder includes Fe and incidental impurities, is rapidly cooled by a conventional technique such as a gas atomization method, a water atomization method, or a centrifugal force atomization method, so that a supersaturated solid solution of the alloy elements consisting mainly of austenite, which is effective in softening the powder, is formed. Since the powder has low hardness, the compactibility is excellent at the time of compression molding.
    Type: Application
    Filed: February 19, 2009
    Publication date: December 16, 2010
    Applicant: MITSUBISHI STELL MFG. CO., LTD.
    Inventors: Hideo Ueno, Yuji Soda, Hironori Hideshima
  • Publication number: 20100230015
    Abstract: A non-stainless steel alloy includes, in combination by weight, about 0.20% to about 0.33% carbon, about 4.0% to about 8.0% cobalt, about 7.0 to about 11.0% nickel, about 0.8% to about 3.0% chromium, about 0.5% to about 2.5% molybdenum, about 0.5% to about 5.9% tungsten, about 0.05% to about 0.20% vanadium, and up to about 0.02% titanium, the balance essentially iron and incidental elements and impurities.
    Type: Application
    Filed: February 20, 2009
    Publication date: September 16, 2010
    Applicant: QuesTek Innovations LLC
    Inventor: Herng-Jeng Jou
  • Publication number: 20100189590
    Abstract: A maraging steel for metallic belts which has a composition capable of being reduced in the content of TiN serving as a starting point for fatigue fracture in a high-cycle-rate region. The composition facilitates nitriding to heighten the surface hardness. The steel has a nitrided surface layer having increased compressive residual stress and hence improved flexural fatigue strength. In the steel, former austenite crystal grains have been reduced in size in order to secure higher strength and higher ductility. The maraging steel consists of, by mass %, up to 0.01% C, up to 0.1% Si, up to 0.1% Mn, up to 0.01% P, up to 0.005% S, 17.0-22.0% Ni, 0.1-4.0% Cr, 3.0-7.0% Mo, from more than 7.0 to 20.0% Co, up to 0.1% Ti, up to 2.5% Al, up to 0.03% N, up to 0.005% 0, up to 0.01% B (exclusive zero), and the balance of Fe and unavoidable impurities, wherein Co/3+Mo+4Al is 8.0-15.0%.
    Type: Application
    Filed: July 11, 2007
    Publication date: July 29, 2010
    Applicant: Hitachi Metals, Ltd.
    Inventors: Katsuhiko Ohishi, Toshihiro Uehara
  • Patent number: 7744702
    Abstract: A soft magnetic alloy powder containing Fe—Ni-based crystal particles is provided as one capable of adequately reducing core loss of a powder magnetic core and achieving satisfactory magnetic characteristics at an effective operating temperature of an element. The present invention provides a soft magnetic alloy powder containing Fe—Ni-based crystal particles containing 45 to 55 mass % Fe and 45 to 55 mass % Ni, relative to a total mass of Fe and Ni, and containing 1 to 12 mass % Co and 1.2 to 6.5 mass % Si, relative to a total mass of Fe, Ni, Co, and Si.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: June 29, 2010
    Assignee: TDK Corporation
    Inventors: Hiroshi Tomita, Hideharu Moro, Kesaharu Takatoh, Koyu Enda
  • Publication number: 20100140439
    Abstract: A mechanical structure is provided with a crystalline superelastic alloy that is characterized by an average grain size and that is characterized by a martensitic phase transformation resulting from a mechanical stress input greater than a characteristic first critical stress. A configuration of the superelastic alloy is provided with a geometric structural feature of the alloy that has an extent that is no greater than about 200 micrometers and that is no larger than the average grain size of the alloy. This geometric feature is configured to accept a mechanical stress input.
    Type: Application
    Filed: July 8, 2009
    Publication date: June 10, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Christopher A. Schuh, Jose M. San Juan, Ying Chen
  • Publication number: 20100111747
    Abstract: The present disclosure relates to a glass forming alloy. The glass forming alloy may include 43.0 atomic percent to 68.0 atomic percent iron, 10.0 atomic percent to 19.0 atomic percent boron, 13.0 atomic percent to 17.0 atomic percent nickel, 2.5 atomic percent to 21.0 atomic percent cobalt, optionally 0.1 atomic percent to 6.0 atomic percent carbon, and optionally 0.3 atomic percent to 3.5 atomic percent silicon. Furthermore, the glass forming alloy includes between 5% to 95% by volume one or more spinodal glass matrix microconstituents which include one or more semi-crystalline or crystalline phases at a length scale less than 50 nm in a glass matrix. In addition, the glass forming alloy is capable of blunting shear bands through localized deformation induced changes under tension.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 6, 2010
    Applicant: The NanoSteel Company, Inc.
    Inventors: Daniel James BRANAGAN, Brian E. MEACHAM, Jikou ZHOU, Alla V. SERGUEEVA
  • Publication number: 20100086433
    Abstract: The invention relates to a solid-solution strengthened iron-nickel alloy with a high level of ductility and an expansion coefficient <5×10?6/K in the temperature range between room temperature and ?200° C. Said alloy consists of (in wt. %): between 0.005 and 0.05% of C; <0.02% of S; between 1 and 2% of Cr; between 35 and 38% of Ni; between 0.3 and 1.5% of Mn; <0.5% of Si; between 1.0 and 3.5% of ? Mo+W; between 0.2 and 1.0% of Ti; between 0.2 and 1.0% of Nb; <0.02% of P; and between 1.0 and 4.0% of Co; Fe constituting the remainder, in addition to production-related impurities.
    Type: Application
    Filed: October 20, 2007
    Publication date: April 8, 2010
    Applicant: THYSSENKRUPP VDM GMBH
    Inventors: Bernd Hoberg, Bernd De Boer
  • Patent number: 7632053
    Abstract: A screw (1) having a head (2), a shaft (4) that includes a thread (5), and an interior engaging member (3) in the head is provided. The screw (1) is produced from an ultra-high strength steel using a cold forming method.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: December 15, 2009
    Assignee: SFS-Intec Holding AG
    Inventors: Thomas Mätzler, Ernst Rohner
  • Patent number: 7578893
    Abstract: A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0?Co?60.0% by weight, a nickel content of 10.0?Ni?36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.?Ms?400° C. in the case of the martensitic variant and ?50° C.?Ms?25° C. in the case of the variant which is naturally hard as a result of cold-forming.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: August 25, 2009
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Hartwin Weber, Waldemar Döring, Matthias Schierling
  • Publication number: 20090148334
    Abstract: A metal matrix composite material of a low coefficient of thermal expansion (CTE) alloy strengthened by nanophase dispersed particles. The low CTE alloy can be an iron-nickel alloy or an iron-nickel-cobalt alloy. The nanophase particles can be a refractory oxide, carbide or nitride. Also disclosed is a method of making a metal matrix composite material in which the nanophase particles are combined with the low CTE alloy to form a metal matrix composite material having the nanophase particles dispersed therein.
    Type: Application
    Filed: July 8, 2008
    Publication date: June 11, 2009
    Applicants: Space Administration
    Inventor: Timothy A. Stephenson
  • Publication number: 20090047167
    Abstract: Disclosed is a creep-resistant low-expansion iron-nickel alloy that is provided with increased mechanical resistance and contains 40 to 43 wt. % of Ni, a maximum of 0.1 wt. % of C, 2.0 to 3.5 wt. % of Ti, 0.1 to 1.5 wt. % of Al, 0.1 to 1.0 wt. % of Nb, 0.005 to 0.8 wt. % of Mn, 0.005 to 0.6 wt. % of Si, a maximum of 0.5 wt. % of Co, the remainder being composed of Fe and production-related impurities. Said alloy has a mean coefficient of thermal expansion <5×10<?6>/K in the temperature range of 20 to 200 DEG C.
    Type: Application
    Filed: January 26, 2007
    Publication date: February 19, 2009
    Inventors: Bodo Gehrmann, Bernd Boer
  • Patent number: 7195680
    Abstract: The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%?Ni?34%, 0%?Co?4%, 0%?Cu?4%, 1%?Cr, 0%?Mo?8%, 0%?Nb?1%, 0%?Mn?2%, 0%?V?5%, 0%?W?5%, 0%?Si?4%, 0%?Al?4%, 0%?C?0.4%, optionally one or several elements selected from magnesium and calcium the content of which is such as to remain below 0.1%, the rest being iron and impurities from production. The chemical composition furthermore satisfies the following relationships: 180.5?6×Ni2.5×(Cr+Mo+V+W+Si+Al)+4×(Co+Cu)?197.5 et Co+Cu?4%. The invention relates to the use thereof for production of a stator for use in a motor for clock-making.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: March 27, 2007
    Assignee: Imphy Alloys
    Inventors: Thierry Waeckerle, Hervë Fraisse, Bruno Boulogne
  • Patent number: 6846368
    Abstract: The present invention provides a cast steel for ring-shaped components that has a low average coefficient of thermal expansion in a temperature range of 20° C. to 500° C. and high strength and good oxidation resistance at 500° C., which are required for ring-shaped components for use as blade rings and seal ring retainers of gas turbines, and that can hence be used for blade rings and seal ring retainers of gas turbines. Specifically, the present invention provides a high-strength and low-thermal expansion cast steel comprising, on a mass percentage basis, 0.1 to 0.8% of C, 0.1 to 1.0% of Si, 0.1 to 1.0% of Mn, 0.01 to 0.1% of S, greater than 40% and up to 50% of Ni, not greater than 4% (inclusive of 0%) of Co, greater than 1.5% and up to 4% of Cr, 0.01 to 0.1% of Al, and 0.001 to 0.1% of Mg, the remainder being substantially Fe.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: January 25, 2005
    Assignees: Hitachi Metals, Ltd., Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Katsuragi, Toshiaki Nonomura, Yasuhiro Ojiro, Daisuke Izutsu
  • Publication number: 20040241035
    Abstract: A purpose of the present invention is to provide an Fe—Ni—Co alloy having high strength and a low coefficient of thermal expansion, along with excellent magnetic properties.
    Type: Application
    Filed: July 8, 2003
    Publication date: December 2, 2004
    Inventors: Norio Yuki, Toshiyuki Ono, Takashi Shibata, Shinji Tanaka
  • Patent number: 6824625
    Abstract: The invention relates to a magnetostriction control alloy sheet advantageously used as a high resolution shadow mask having a low coefficient of thermal expansion, superior magnetic properties and a high Young's modulus after a blackening process, a manufacturing process for the same, and a part for a color Braun tube such as a shadow mask. The magnetostriction control alloy sheet comprises C at 0.01 wt. % or less, Ni at 30 to 36 wt. %, Co at 1 to 5.0 wt. %, and Cr at 0.1 to 2 wt. %, the remainder Fe and unavoidable impurities, and having a magnetostriction &lgr; after the softening and annealing of (−15×10−6) to (25×10−6).
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 30, 2004
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Norio Fukuda, Shinya Nakamura, Hiroyuki Yamada, Akira Makita, Tsutomu Hatano, Nobuaki Kanayama, Takahito Aoki
  • Patent number: 6776855
    Abstract: The present invention provides a maraging steel excellent in fatigue characteristics and a process for the production thereof. A maraging steel of the first embodiment of the present invention has a chemical composition consisting essentially of, in % by weight: C: 0.01% or less, Ni: 8-19%, Co: 8-20%, Mo: 2-9%, Ti: 0.1-2%, Al: 0.15% or less, N: 0.003% or less, O: 0.0015% or less, and the balance Fe and the Ti component segregation ratio and the Mo component segregation ratio in its structure of 1.3 or less each. A maraging steel of the second embodiment of the present invention has the above composition and contains a nonmetallic inclusion in its structure having a size of 30 &mgr;m or less. The maraging steel of the second embodiment can be obtained easily by appropriate plastic working of a steel ingot with a taper Tp=(D1−D2)×100/H of 5.0-25.0%, a height-diameter ratio Rh=H/D of 1.0-3.0, and a flatness ratio B=W1/W2 of 1.5 or less.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: August 17, 2004
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Sumitomo Special Metals Co., Ltd.
    Inventors: Masami Ueda, Kenji Hirano
  • Patent number: 6767414
    Abstract: There is provided inexpensive maraging steel having high fatigue strength and maraging steel strip formed by use of the same. The maraging steel having high fatigue strength, consisting essentially, by mass, of not more than 0.008% C, from 0 inclusive but not more than 2.0% Si, from 0 inclusive but not more than 3.0% Mn, not more than 0.010% P, not more than 0.005% S, 12 to 22% Ni, 3.0 to 7.0% Mo, less than 7.0% Co, not more than 0.1% Ti, not more than 2.0% Al, less than 0.005% N, not more than 0.0033% O (oxygen), and the balance substantially Fe, a total amount of (3Si+1.8Mn+Co/3+Mo+2.6Ti+4Al) being in a range of 8.0 to 13.0%.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: July 27, 2004
    Assignee: Hitachi Metals, Ltd.
    Inventors: Toshihiro Uehara, Etsuo Fujita
  • Publication number: 20040093983
    Abstract: Disclosed is a method of producing maraging steel, which includes producing a consumable electrode for vacuum remelting; and subjecting the consumable electrode to the vacuum remelting. The consumable electrode contains not less 5 ppm Mg. Disclosed is also a maraging steel containing, by mass %, at least, from more than zero to less than 10 ppm Mg, less than 10 ppm oxygen, and less than 15 ppm nitrogen. The steel contains also nitride inclusions having a maximum length of not more than 15 &mgr;m and oxide inclusions having a maximum length of not more than 20 &mgr;m. Regarding the oxide inclusions, a content rate of spinel form inclusions having a length of not less than 10 &mgr;m to a total content of the spinel form inclusions having a length of not less than 10 &mgr;m and alumina inclusions having a length of not less than 10 &mgr;m exceeds 0.33 (i.e. 33%).
    Type: Application
    Filed: November 19, 2003
    Publication date: May 20, 2004
    Applicant: HITACHI METALS, LTD.
    Inventors: Setsuo Mishima, Hidemi Takao, Ken-Ichiro Hara, Etsuo Fujita
  • Publication number: 20040037732
    Abstract: The inv ntion is a Fe—Ni alloy mat rial comprising Ni: 26-37 wt %, Si: 0.001-0.2 wt %, Mn: 0.01-0.6 wt %, Al: 0.0001-0.003 wt %, Mg: not more than 0.001 wt %, Ca: not more than 0.001 wt % and the reminder being Fe and inevitable impurities, and containing not more than 0.02 wt % of one or more MnO—SiO2—Al2O3 inclusion, SiO2 inclusion and MgO—Al2O3 inclusion insoluble in an aqueous solution of ferric chloride, and is to provide electronic materials for shadow mask and the like having a good hole shape in an etching treatment and a high quality.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 26, 2004
    Inventors: Natsuki Shiga, Hidekazu Todoroki
  • Publication number: 20030185699
    Abstract: A steel article is fabricated by providing an iron-base alloy having less than about 0.5 weight percent aluminum, melting the alloy to form a melt, adding calcium to the melt, thereafter adding aluminum to the melt to increase the aluminum content of the melt to more than about 0.5 weight percent aluminum, and casting the melt to form a casting. Other calcium additions may be made simultaneously with the adding of aluminum, and after the adding of aluminum but before casting the melt. The calcium additions deoxidize the melt to minimize the formation of clustered aluminum-oxygen-based inclusions.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: Edward Lee Raymond, Mark Alan Rhoads, Glenn Charles Culberston
  • Patent number: 6592810
    Abstract: Disclosed is an Fe—Ni alloy consisting of, by mass, 30 to 50% of Ni (or 27 to 47% Ni and not more than 22% Co), 0.005 to 0.1% of Nb, less than 0.01% of C, 0.002 to 0.02% of N, and the balance of Fe and inevitable impurities, wherein the equation “0.000013≦(% Nb)×(% N)≦0.002”, is fulfilled. In the alloy, preferably, the maximum grain size of compounds primarily containing Nb and nitrogen and other compounds primarily containing Nb and C is less than 0.5 &mgr;m, which can be observed at an fractional section of metal structure, and a total number of the compounds is not less than 50,000/mm2 at an fractional section. An average grain size of the alloy structure is not less than 10 by the crystal grain size number as defined in JIS G0551. The alloy may applied to shadow masks for the Braun tube and lead frames for semiconductor elements.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: July 15, 2003
    Assignee: Hitachi Metals, Ltd.
    Inventors: Junichi Nishida, Ryoji Inoue, Takehisa Seo
  • Publication number: 20030118468
    Abstract: An iron-nickel-cobalt alloy is described which has the following weight percent composition: 1 Carbon  0.04 max. Manganese  0.50 max. Silicon  0.20 max. Sulfur 0.020 max. Cobalt 16-18 Nickel 28-31 Boron 0.020 max.
    Type: Application
    Filed: July 22, 2002
    Publication date: June 26, 2003
    Inventor: Lin Li
  • Patent number: 6561258
    Abstract: A maraging steel for use as a mold steel is disclosed. In general, the use of maraging steels in molds is limited by the fact that the martensitic microstructure is not stable at temperatures above 480° C. The precipitate hardening maraging type steel according to the invention contains titanium, molybdenum, cobalt, chromium and nickel and has, in addition to high strength, good ductility, small thermal expansion coefficient and good thermal conductivity, a significantly better thermal stability than other maraging steels, which makes it suitable for use as a mold material particularly in pressure casting.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 13, 2003
    Assignee: Metso Powdermet Oy
    Inventor: Mikko Kumpula
  • Patent number: 6547893
    Abstract: It is a Fe—Ni based shadow mask material of Fe—Ni alloy or Fe—Ni—Co alloy used as a material for a color television cathode tube or the like, and relates to a material wherein the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100)<001> to twinning orientation (221)<212> thereof in a (111) pole figure is a range of 0.5-5:1 and segregation of Ni, Mn or the like is less, and a section cleanness defined according to JIS G0555 is made to be not more than 0.05% to reduce the occurrence of streak or mottling in the etching.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: April 15, 2003
    Assignee: Nippon Yakin Kogyo Co., Ltd.
    Inventors: Tatsuya Itoh, Tsutomu Omori
  • Patent number: 6528012
    Abstract: In a welded structure and welded pipe, having members joined to each other by welding wherein, at least one of the members is formed of Fe—Ni-base low thermal expansion coefficient alloy, there is provided a welded structure and welded pipe having a weld metal free from cracking and achieving an excellent toughness and stress corrosion cracking resistance. Further, a welding material is provided which can form such a weld metal and is excellent in workability and weldability in fabrication. The weld metal comprises, on the weight % basis, Ni: 30 to 45%, Co: 0 to 10%, C: 0.03 to 0.5%, Mn: 0.7% or less, either one of or the total of Nb and Zr: 0.05 to 4%, and rare earth element: 0 to 0.5%, with impurities being P: 0.02% or less, Al: 0.01% or less, and oxygen: 0.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: March 4, 2003
    Assignees: Sumitomo Metal Industries, Ltd., Osaka Gas Co., Ltd., Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Kazutoshi Nishimoto, Naoshige Kubo, Hiroshi Iwahashi, Shuji Yamamoto, Hidefumi Yamanaka, Shinji Koga, Yutaka Chida, Taketo Yamakawa, Kouji Michiba, Hiroyuki Hirata, Kazuhiro Ogawa, Toshinobu Nishibata
  • Publication number: 20020043306
    Abstract: Fe—Ni—Co alloy whose chemical composition contains, by weight: 32%≦Ni≦34%, 3.5%≦Co≦6.5%, 0%≦Mn≦0.1%, 0%≦Si≦0.1%≦0%≦Cr≦0.1%, 0.005%≦C≦0.02%, S≦0.001%, 0.0001%≦Ca≦0.002%, 0.0001%≦Mg≦0.002%, the substantial remainder preferably being iron and impurities resulting from smelting; the chemical composition of the alloy furthermore satisfying the relationships: Co+Ni≦38.5%, Co+0.5×Ni≧20%, Co+5×Ni≧165.5% and S≦0.02≦Mn+0.8×Ca+0.6×Mg. Use of the alloy for the manufacture of a shadow mask for a display cathode ray tube.
    Type: Application
    Filed: August 29, 2001
    Publication date: April 18, 2002
    Applicant: IMPHY S.A.
    Inventors: Ricardo Cozar, Marie-Paul Solignac
  • Patent number: 6355212
    Abstract: The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chromium (Cr) 26.0-30%; aluminum (Al) 5.5-13.0%; yttrium (Y) 0.3-1.5%; silicon (Si) 1.5-4.5%; metal from the second main group (magnesium, calcium, barium, strontium) 0.1-2.0%; oxide of the corresponding metal from the second main group 0.1-2.0%; cobalt (Co) remaining percentage. Preferably, tantalum (Ta) is also added in a proportion of 0.5-4.0%, and the remaining percentage of cobalt is replaced by a remaining percentage of Me, Me being understood to mean a metal which may be nickel (Ni) or iron (Fe) or cobalt (Co) or a composition comprising Ni—Fe—Co, Ni—Fe, Ni—Co, Co—Fe.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: March 12, 2002
    Assignee: Turbocoating SpA
    Inventor: Nelso Antolotti
  • Patent number: 6344095
    Abstract: A low-thermal expansion cast steel having an average linear thermal expansion coefficient of less than 4.0×10−6/° C. in a range of room temperature to 100° C. and excellent machinability has a chemical composition (by mass) comprising 0.4-0.8% of C, 0.5% or less of Si, 1.0% or less of Mn, 0.01-0.3% of S, 30-40% of Ni, and 0.005-0.1% of Mg, the balance being substantially Fe and inevitable impurities, the contents of S and Mn satisfying S≦(1/4) Mn or (1/4) Mn<S≦(1/4) Mn+0.05.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: February 5, 2002
    Assignee: Hitachi Metals, Ltd.
    Inventors: Masahide Kawabata, Toshihiro Uehara
  • Patent number: 6221183
    Abstract: A high-strength low-thermal-expansion alloy consisting of, by weight, 0.06 to 0.50% C, 25 to 65% in total of one or both of 65% or less Co and less than 30% Ni, and balance of Fe as a main component, other optional elements and unavoidable impurities, and having a primary phase of austenite phase and martensite phase induced by working. A wire is made from the alloy.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 24, 2001
    Assignee: Hitachi Metals, Ltd.
    Inventors: Koji Sato, Rikizo Watanabe, Takehiro Ohno, Yoshiki Masugata, Minoru Takuwa, Shigeaki Sato, Yoshimi Senda
  • Patent number: 5866066
    Abstract: An age hardenable martensitic steel alloy having a unique combination of very high strength and good toughness consists essentially of, in weight percent, about______________________________________ C 0.21-0.34 Mn 0.20 max. Si 0.10 max. P 0.008 max. S 0.003 max. Cr 1.5-2.80 Mo 0.90-1.80 Ni 10-13 Co 14.0-22.0 Al 0.1 max. Ti 0.05 max. Ce 0.030 max. La 0.010 max. ______________________________________the balance essentially iron. In addition, cerium and sulfur are balanced so that the ratio Ce/S is at least about 2 and not more than about 15. A small but effective amount of calcium can be present in place of some or all of the cerium and lanthanum.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: February 2, 1999
    Assignee: CRS Holdings, Inc.
    Inventors: Raymond M. Hemphill, David E. Wert, Paul M. Novotny, Michael L. Schmidt
  • Patent number: 5858125
    Abstract: A magnetoresistive material of the present invention has a structure in which many clusters are surrounded by a crystal phase of Cu and/or Ag, where each cluster has a grain size of 20 nm or less and composed of an amorphous phase containing at least one ferromagnetic metal element T as a main component selected from Fe, Co and Ni, and at least one element M selected from Ti, Zr, Hf, V, Nb, Ta, Mo and W.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: January 12, 1999
    Assignee: Alps Electric Co., Ltd.
    Inventor: Naoya Hasegawa
  • Patent number: 5841348
    Abstract: A resonator for use in a marker, with a bias element which produces a bias field, in a magnetomechanical electronic article surveillance system is composed of an amorphous magnetostrictive alloy containing iron, cobalt, nickel, silicon and boron in quantities for giving the resonator a quality Q which is between about 100 and 600. The amorphous magnetostrictive alloy is annealed in a transverse magnetic field for giving it a B-H loop which is linear up to about 8 Oe and an anisotropy field strength of at least 10 Oe. When the resonator is excited to resonate by a signal emitted by the transmitter in the surveillance system, it produces a signal at a mechanical resonant frequency which can be detected by the receiver of the detection system. Due to the resonator having a quality Q in the above range, the signal produced by the resonator in a first detector window, beginning approximately 0.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 24, 1998
    Assignee: Vacuumschmelze GmbH
    Inventor: Giselher Herzer