One Percent Or More Carbon Containing, But Less Than 1.7 Percent Patents (Class 420/99)
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Patent number: 10329646Abstract: A steel wire for drawing includes, as a chemical composition, by mass %: C: 0.9% to 1.2%, Si: 0.1% to 1.0%, Mn: 0.2% to 1.0%, and Cr: 0.2% to 0.6%, limits Al, N, P, and S to be predetermined ranges, and includes one or more selected from the group consisting of Mo: 0% to 0.20%, and B: 0% to 0.0030%, a remainder of Fe and impurities; in which a metallographic structure includes pearlite, a volume fraction of the pearlite is 95% or higher, an average lamellar spacing of the pearlite is 50 nm to 75 nm, an average length of cementite in the pearlite is 2.0 ?m to 5.0 ?m, and a ratio of the number of grains of cementite with a length of 0.5 ?m or smaller to the cementite in the pearlite is 20% or lower.Type: GrantFiled: August 14, 2015Date of Patent: June 25, 2019Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshihiro Daito, Junichi Kodama, Masashi Sakamoto
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Patent number: 10052725Abstract: Compositions for Chromium-free hardfacing welding consumables are provided that include between approximately 0.3% and approximately 1.5% Carbon, between approximately 0.2% and approximately 2.5% Manganese, between approximately 0.3% and approximately 1.3% Silicon, between approximately 1.3% and approximately 5.5% Boron, between approximately 1.0% and approximately 4.0% Nickel, between approximately 1.0% and approximately 6.0% of at least one of Titanium and Niobium, and between approximately 0.1% and approximately 2.0% Tungsten and/or Molybdenum. Additional welding consumable compositions and weld deposit compositions are also provided to provide hardfacing materials with little or no Chromium content.Type: GrantFiled: July 1, 2013Date of Patent: August 21, 2018Assignee: Stoody CompanyInventors: Jack Garry Wallin, Ravi Menon
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Patent number: 9314880Abstract: Compositions for Chromium-free hardfacing welding consumables are provided that include between approximately 0.3% and approximately 1.5% Carbon, between approximately 0.2% and approximately 2.5% Manganese, between approximately 0.3% and approximately 1.3% Silicon, between approximately 1.3% and approximately 5.5% Boron, between approximately 1.0% and approximately 4.0% Nickel, between approximately 1.0% and approximately 6.0% of at least one of Titanium and Niobium, and between approximately 0.1% and approximately 2.0% Tungsten and/or Molybdenum. Additional welding consumable compositions and weld deposit compositions are also provided to provide hardfacing materials with little or no Chromium content.Type: GrantFiled: October 21, 2010Date of Patent: April 19, 2016Assignee: Stoody CompanyInventors: Jack Garry Wallin, Ravi Menon
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Patent number: 9039962Abstract: A steel for an induction hardening including, by mass %, C: more than 0.75% to 1.20%, Si: 0.002 to 3.00%, Mn: 0.20 to 2.00%, S: 0.002 to 0.100%, Al: more than 0.050% to 3.00%, P: limited to 0.050% or less, N: limited to 0.0200% or less, O: limited to: 0.0030% or less, and the balance composing of iron and unavoidable impurities, wherein an Al content and a N content satisfy, by mass %, Al?(27/14)×N>0.050%.Type: GrantFiled: February 15, 2011Date of Patent: May 26, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Manabu Kubota, Toshiharu Aiso, Kei Miyanishi
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Publication number: 20150000468Abstract: There is provided a metal powder for powder metallurgy including Zr and Si in a manner such that following conditions of (A) and (B) are satisfied, wherein a remainder thereof includes at least one element selected from the group consisting of Fe, Co and Ni, (A) the mass ratio of a content of Zr to a content of Si is 0.03 to 0.3, and (B) the content of Si is 0.35 to 1.5% by mass.Type: ApplicationFiled: September 17, 2014Publication date: January 1, 2015Inventor: Hidefumi NAKAMURA
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Patent number: 8747576Abstract: This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001% to 0.01%; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion has a pearlite structure.Type: GrantFiled: April 14, 2010Date of Patent: June 10, 2014Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Teruhisa Miyazaki, Masaharu Ueda, Suguru Yoshida
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Publication number: 20140150930Abstract: The present invention relates to a hot press forming steel plate made of a composition comprising: 0.3-1.0 wt % of C; 0.0-4.0 wt % of Mn; 1.0-2.0 wt % of Si; 0.01-2.0 wt % of Al; 0.015 wt % or less of S; 0.01 wt % or less of N; and the remainder being Fe and unavoidable impurities. Further, the present. invention relates to a method for manufacturing the hot press forming steel plate, characterized by comprising the steps of: heating, to between 1100 and 1300° C., a steel slab having the composition; performing hot rolling finishing between. an Ar3 transformation point and 950° C.; and performing winding between MS and 720° C. Further, the present invention. relates to a hot press formed member characterized by having the composition, and having a dual phase microstructure made of bainite and residual austenite.Type: ApplicationFiled: July 15, 2011Publication date: June 5, 2014Inventors: Kyoo-Young Lee, Jin-Keun Oh, Jong-Sang Kim, Tae-Kyo Han
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Publication number: 20130266820Abstract: A work piece for use in abrasive environments with hardbanding is provided. The work piece has at least a protective layer deposited onto at least a portion to be protected. The deposited layer exhibits a hardness of at least 50 Rc, a wear rate of less than 0.5 grams of mass loss as measured according to ASTM G65-04, Procedure A, a wear rate on a contacting secondary body comprising carbon steel of less than 0.005 grams as measured according to modified ASTM G77 wear test. The deposited alloy forms an iron matrix comprising embedded hard particles in an amount of less than 15 vol. %. The embedded hard particles have an average particle size of ranging from 100 nm to 5 ?m. In one embodiment, the deposition is via welding.Type: ApplicationFiled: April 5, 2012Publication date: October 10, 2013Applicant: c/o Chevron CorporationInventors: Grzegorz Jan Kusinski, Justin Lee Cheney, John Hamilton Madok
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Patent number: 8540934Abstract: A lead free free-cutting steel is described having the following composition in percent by weight: C 0.85-1.2 Si 0.1-0.6 Mn 0.4-1.2 P max 0.05 S 0.04-0.3 Cr max 2 Ni max 1 Mo max 0.5 Cu max 2 Al max 0.1 B max 0.008 Bi+Se+Te max 0.005 Ti+Nb+Zr+V max 0.2 balance Fe and normally occurring impurities. The steel is mainly intended for small/thin dimensions and/or low cutting speeds during manufacture of a product formed of the steel.Type: GrantFiled: January 24, 2008Date of Patent: September 24, 2013Assignee: Sandvik Intellectual Property ABInventors: Mattias Sandström, Ylva Trogen, Lars Karlsson
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Publication number: 20130216423Abstract: This high carbon steel wire rod, which has excellent drawability in addition to high strength required for a wire rod, contains 0.6-1.5% of C, 0.1-1.5% of Si, 0.1-1.5% of Mn, 0.02% or less of P (excluding 0%), 0.02% or less of S (excluding 0%), 0.03-0.12% of Ti, 0.001-0.01% of B and 0.001-0.005% of N, with solid-solved B being 0.0002% or more, solid-solved N being 0.0010% or less, and the balance being made up of iron and inevitable impurities. In addition, the content of Ti solid-solved in the steel is 0.002% by mass or more, and the content of Ti that formed carbides is 0.020% by mass or more.Type: ApplicationFiled: October 24, 2011Publication date: August 22, 2013Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hiroshi Oura, Nao Yoshihara
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Patent number: 8491731Abstract: An alloy composition of FeaBbSicPxCyCuz. Parameters meet the following conditions: 79?a?86 atomic %; 5?b?13 atomic %; 0?c?8 atomic %; 1?x?8 atomic %; 0?y?5 atomic %, 0.4?z?1.4 atomic %; and 0.08?z/x?0.8. Or, parameters meet the following conditions: 81?a?86 atomic %; 6?b?10 atomic %; 2?c?8 atomic %; 2?x?5 atomic %; 0?y?4 atomic %; 0.4?z?1.4 atomic %, and 0.08?z/x?0.8.Type: GrantFiled: August 20, 2009Date of Patent: July 23, 2013Inventor: Akihiro Makino
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Publication number: 20130094900Abstract: Disclosed is a hardfacing alloy deriving its usefulness from carbides and borides of molybdenum and niobium. The alloy does not rely on chromium as an alloying agent. The hardfacing alloy is capable of being applied to a number of industrial substrates in a crack-free manner, and once applied convert the substrate to a wear- and abrasion-resistant material having an extended service life, even when subjected to harsh wear conditions.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Applicant: DEVASCO INTERNATIONAL INC.Inventors: Grant R. FOLKMANN, Keith E. MOLINE
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Patent number: 8372217Abstract: A magnetic core having an iron-based amorphous alloy that includes: a chemical composition with a formula FeaBbSicCd, where 81.5<a?84, 12<b<17, 1?c<5 and 0.3?d?1.0, numbers being in atomic percent, with incidental impurities, simultaneously having a value of a saturation magnetic induction equal to or exceeding 1.63 tesla, a Curie temperature greater than or equal to 315° C. and less than or equal to 360° C. and a crystallization temperature greater than or equal to 400° C. and less than or equal to 470° C. The core has low core loss and exciting power and is suited for transformers, electrical chokes, power inductors and pulse generation and compression devices.Type: GrantFiled: December 31, 2009Date of Patent: February 12, 2013Assignees: Metglas, Inc., Hitachi Metals, Ltd.Inventors: Ryusuke Hasegawa, Daichi Azuma
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Publication number: 20130025747Abstract: A steel for an induction hardening including, by mass %, C: more than 0.75% to 1.20%, Si: 0.002 to 3.00%, Mn: 0.20 to 2.00%, S: 0.002 to 0.100%, Al: more than 0.050% to 3.00%, P: limited to 0.050% or less, N: limited to 0.0200% or less, O: limited to: 0.0030% or less, and the balance composing of iron and unavoidable impurities, wherein an Al content and a N content satisfy, by mass %, Al?(27/14)×N>0.050%.Type: ApplicationFiled: February 15, 2011Publication date: January 31, 2013Inventors: Manabu Kubota, Toshiharu Aiso, Kei Miyanishi
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Publication number: 20130022491Abstract: Provided is a high-carbon steel wire which gives steel wires having high strength and has excellent suitability for wiredrawing and which after being wiredrawn, has excellent fatigue properties. The high-carbon steel wire has an adequately regulated chemical composition and has a pearlite structure in an areal proportion of 90% or more. In 2,000 ?m2 of the pearlite structure, the number of BN compound grains having an equivalent-circle diameter of 100 nm or more but less than 1,000 nm is 100 or less (including 0) and the number of BN compound grains having an equivalent-circle diameter of 1,000 nm or more is 10 or less (including 0).Type: ApplicationFiled: March 17, 2011Publication date: January 24, 2013Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hiroshi Oura, Nao Yoshihara
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Publication number: 20120160363Abstract: Provided are high manganese containing ferrous based components and their use in oil, gas and/or petrochemical applications. In one form, the components include 5 to 40 wt % manganese, 0.01 to 3.0 wt % carbon and the balance iron. The components may optionally include one or more alloying elements chosen from chromium, nickel, cobalt, molybdenum, niobium, copper, titanium, vanadium, nitrogen, boron and combinations thereof.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Hyun Woo Jin, Raghavan Ayer, Douglas Paul Fairchild, Mario L. Macia
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Publication number: 20120087825Abstract: This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001% to 0.01%; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion has a pearlite structure.Type: ApplicationFiled: April 14, 2010Publication date: April 12, 2012Inventors: Teruhisa Miyazaki, Masaharu Ueda, Suguru Yoshida
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Publication number: 20120014831Abstract: The present invention provides a wire rod with a composition at least including: C: 0.95-1.30 mass %; Si: 0.1-1.5 mass %; Mn: 0.1-1.0 mass %; Al: 0-0.1 mass %; Ti: 0-0.1 mass %; P: 0-0.02 mass %; S: 0-0.02 mass %; N: 10-50 ppm; O: 10-40 ppm; and a balance including Fe and inevitable impurities, wherein 97% or more of an area in a cross-section perpendicular to the longitudinal direction of the wire rod is occupied by a pearlite, and 0.5% or less of an area in a central area in the cross-section and 0.5% or less of an area in a first surface layer area in the cross-section are occupied by a pro-eutectoid cementite.Type: ApplicationFiled: October 19, 2010Publication date: January 19, 2012Inventors: Shingo Yamasaki, Toshiyuki Manabe, Daisuke Hirakami, Nariyasu Muroga
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Publication number: 20110314965Abstract: There is provided a metal powder for powder metallurgy including Zr and Si in a manner such that following conditions of (A) and (B) are satisfied, wherein a remainder thereof includes at least one element selected from the group consisting of Fe, Co and Ni, (A) the mass ratio of a content of Zr to a content of Si is 0.03 to 0.3, and (B) the content of Si is 0.35 to 1.5% by mass.Type: ApplicationFiled: May 24, 2011Publication date: December 29, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Hidefumi NAKAMURA
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Publication number: 20110305594Abstract: The invention relates to a steel material composition, in particular for producing piston rings and cylinder sleeves, containing the following elements in the given fractions in relation to 100% by weight of the steel material: 0.03-2.0% by weight B, 0.5-1.2% by weight C, 70.1-97.3% by weight Fe, 0.1-3.0% by weight Mn and 2.0-10.0% by weight Si. Said composition can be produced by melting the starting materials and casting the melt in a pre-fabricated mould.Type: ApplicationFiled: October 13, 2009Publication date: December 15, 2011Inventor: Laszlo Pelsoeczy
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Publication number: 20110206552Abstract: Provided is a carbon steel wire with unprecedentedly high strength and excellent ductility and fatigue resistance, a process for producing the same, and a method of evaluating the same is provided. Provided is a carbon steel wire having a carbon content of 0.50 to 1.10% by mass, wherein the ratio of the hardness of the surface layer portion 13 on a cross section 12 and the hardness of the surface layer portion 3 on a longitudinal section 2, a coefficient X (cross sectional hardness/longitudinal sectional hardness), and the ratio of the hardness of the center portion 14 on the cross section 12 and the hardness of the center portion 4 on the longitudinal section 2, a coefficient X (cross sectional hardness/longitudinal sectional hardness), each satisfy a relationship represented by the following expression: 0.9<coefficient X?1.10, and wherein the carbon steel wire has a tensile strength of 4000 MPa or higher.Type: ApplicationFiled: October 30, 2009Publication date: August 25, 2011Applicant: BRIDGESTONE CORPORATIONInventor: Wataru Shimizu
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Publication number: 20100263771Abstract: A heat treatment method of manufacturing high carbon bearing steel having excellent abrasion resistance and fatigue resistance, a steel wire rod for high carbon bearing steel subjected to the heat treatment, a manufacturing method of the steel wire rod, high carbon bearing steel manufactured by the heat treatment and a soaking method of a steel bloom used for manufacturing the steel wire rod. The heat treatment method of bearings includes the steps of: quenching a bearing-shaped steel part containing, by weight, 0.5% to 1.20% carbon and 1.0% to 2.0% silicon; and partitioning the quenched steel part at a temperature ranging from Ms?100° C. to Ms for at least 10 minutes, where Ms represents a temperature at which formation of martensite will start.Type: ApplicationFiled: December 12, 2008Publication date: October 21, 2010Applicant: POSCOInventor: Kwan-Ho Kim
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Publication number: 20100247368Abstract: A bainitic steel alloy and a method for making such an alloy are disclosed, in which the bainite plates are particularly small, less than 50 nanometres in width. In preferred embodiments of the invention, each bainite plate is surrounded by a film of retained austenite; the level of retained austenite in the alloy is greater than 10%; and the alloy is substantially free of blocky unstable austenite and cementite.Type: ApplicationFiled: March 10, 2010Publication date: September 30, 2010Applicant: ROLLS-ROYCE PLCInventors: Martin J. RAWSON, Mathew J. PEET, Harshad K.D.H BHADESHIA, Scott D. WOOD, Paul O. HILL, Emma E. BOOTH
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Publication number: 20100192895Abstract: The invention relates to a steel material having a high silicon content, and to a method for the production thereof, the steel material being particularly suitable for piston rings and cylinder sleeves. In addition to iron and production-related impurities, the steel material contains 0.5 to 1.2 wt. % carbon, 3.0 to 15.0 wt. % silicon and 0.5 to 4.5 wt. % nickel. Also, the steel material can contain small amounts of the following elements Mo, Mn, Al, Co Nb, Ti, V, Sn, Mg, B, Te Ta La, Bi, Zr, Sb, Ca, Sr, Cer, rare earth metals and nucleating agents such as NiMg, MiSiMg, FeMg and FeSIMg. due to the high Si content, a degree of saturation higher than 1.0 is attained, with the melting temperature of the steel material corresponding to normal cast iron. The steel material can be produced according to a conventional cast-iron technique and has a high resistance to wear and tear and a high structural strength (minimal distortion).Type: ApplicationFiled: May 7, 2007Publication date: August 5, 2010Applicant: FEDERAL-MOGUL BURSCHEID GMBHBURGERMEISTER-SCHMIDT- STRASSE 17Inventor: Laszlo Pelsoeczy
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Patent number: 7718843Abstract: An iron powder for decomposition of organic chlorinated compounds, comprising from 0.03 to 0.5% by weight of Ni and from 0.005 to 5% by weight of carbon, wherein particles having a particle size of less than 53 ?m occupies less than 40% by weight, is used. It is particularly preferable that Ni, carbon and iron are partially alloyed. When the iron powder for decomposition is used by mixing with, for example, an Ni-free iron powder, the total Ni content can be reduced without deterioration of decomposition performance to organic chlorinated compounds. The iron powder has high decomposition performance in the treatment of a solid such as soil.Type: GrantFiled: July 17, 2007Date of Patent: May 18, 2010Assignee: Tosoh CorporationInventors: Yoju Shimizu, Yasuyuki Nagai
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Publication number: 20100043662Abstract: A diffusion alloyed iron powder is provided wherein tungsten W is bonded to the surfaces of the particles of an iron or iron-based powder, and wherein the diffusion alloyed iron powder comprises by weight-%: 30-60 W, with the balance being essentially only iron and unavoidable impurities.Type: ApplicationFiled: January 21, 2008Publication date: February 25, 2010Applicant: HOGANAS AB (publ)Inventors: Johan Arvidsson, Hans Söderhjelm
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Publication number: 20090258250Abstract: An iron based hardfacing alloy with an undiluted (all weld material) alloy composition is substantially balanced in order to achieve an hypo-eutectic primary austenitic with secondary martensitic solidification mode. The alloy enables the deposition of substantially crack-free single layers of hardfacing onto industrial components without any post weld treatment. The hardfacing alloy is capable of withstanding abrasion of silicious earth particles when applied to industrial products, such as tool joints, stabilizers and casing and other tubulars used in oil and gas well drilling, and other industrial products.Type: ApplicationFiled: June 17, 2009Publication date: October 15, 2009Applicant: ATT Technology, Ltd. d/b/a Amco Technology Trust, Ltd.Inventors: Roger Auguste Daemen, Keith E. Moline
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Publication number: 20090087336Abstract: A high-carbon steel wire rod of high ductility for steel cord and the like is provided that experiences little breakage during drawing. The high-carbon steel wire rod of high ductility is a high-carbon steel wire rod fabricated by hot rolling that that has a carbon content of 0.7 mass % or greater, wherein 95% or greater of the wire rod metallographic structure is pearlite structure and the maximum pearlite block size of pearlite at the core of the hot-rolled wire rod is 65 ?m or less. The high-carbon steel wire rod of high ductility has a tensile strength in a range of {248+980×(C mass %)}±40 MPa} and a reduction of area of {72.8?40×(C mass %) %} or greater. The high-carbon steel wire rod of high ductility is characterized in that the average pearlite block size at the core of the hot-rolled wire rod constituted by ferrite grain boundaries of an orientation difference of 9 degrees or greater as measured with an EBSP analyzer is 10 ?m or greater and 30 ?m or less.Type: ApplicationFiled: May 31, 2007Publication date: April 2, 2009Inventors: Seiki Nishida, Shingo Yamasaki, Hitoshi Demachi, Nariyasu Muroga, Shouichi Ohashi, Kenichi Nakamura, Makoto Kosaka, Nobuyuki Komiya, Susumu Sahara
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Publication number: 20080114198Abstract: In an iron powder for decomposition of organic chlorinated compounds, an iron powder having high decomposition performance in the treatment of a solid such as in a soil, and having low Ni content was required. An iron powder for decomposition of organic chlorinated compounds, comprising from 0.03 to 0.5% by weight of Ni and from 0.005 to 5% by weight of carbon, wherein particles having a particle size of less than 53 ?m occupies less than 40% by weight, is used. It is particularly preferable that Ni, carbon and iron are partially alloyed. When the iron powder for decomposition is used by mixing with, for example, an Ni-free iron powder, the total Ni content can be reduced without deterioration of decomposition performance to organic chlorinated compounds.Type: ApplicationFiled: July 17, 2007Publication date: May 15, 2008Applicant: TOSOH CORPORATIONInventors: Yoju SHIMIZU, Yasuyuki NAGAI
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Patent number: 7291421Abstract: A battery module is constructed of an integral battery case which is constituted by forming a plurality of prismatic cell cases into a unitized body, wherein positive electrode plates and negative electrode plates laminated alternately upon one another with intervening separators are respectively accommodated in each of the cell cases, thereby constituting a plurality of cells, these cells being electrically connected in series. A plurality of such battery modules are arranged in a direction in which the electrode plates within each cell are laminated in a condition with coolant passages formed between the battery modules, and bound tightly together with end plates arranged at both ends in the direction of adjacent arrangement of the battery modules.Type: GrantFiled: February 7, 2003Date of Patent: November 6, 2007Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tadao Kimura, Shinji Hamada, Yoshiaki Ogata, Tomokazu Yamauchi, Toshiyuki Sekimori
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Patent number: 6893609Abstract: A long-life bearing steel for general purpose use is provided at low cost with no use of specific secondary refining process. Specifically, a bearing material having a component composition in which C: 0.95 to 1.10 mass %, Si: 0.15 to 0.70 mass %, Mn: 1.15 mass % or less, Cr: 0.90 to 1.60 mass %, and P: 0.025 mass % or less are contained, S and O, that are elements forming nonmetallic inclusions, are contained at S: 0.025 mass % or less and O: 0.0012 mass % or less, and the rest is composed of Fe and incidental impurities, wherein the maximum diameter of the oxide-based nonmetallic inclusion is more than 10 ?m, but 15 ?m or less in an inspection area: 320 mm2, the number of oxide-based nonmetallic inclusions having an equivalent circle diameter of 3 ?m or more is 250 or less in the inspection area: 320 mm2, while in the material, AlN is contained at 0.Type: GrantFiled: January 24, 2002Date of Patent: May 17, 2005Assignee: JFE Steel CorporationInventors: Akihiro Matsuzaki, Takashi Iwamoto, Yoshio Yamazaki, Katsuhiko Kizawa, Masao Goto
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Publication number: 20040123924Abstract: [Object] To provide a high carbon steel sheet having excellent hardenability and toughness, and low planar anisotropy of tensile properties affecting workability, and a method of producing the same.Type: ApplicationFiled: September 19, 2003Publication date: July 1, 2004Applicant: NKK CORPORATIONInventors: Nobuyuki Nakamura, Takeshi Fujita, Katsutoshi Ito, Yasuyuki Takada
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Patent number: 6572713Abstract: An austenitic manganese steel microalloyed with nitrogen, vanadium and titanium used for castings such as mantles, bowls and jaws manufactured as wear components of crushers in the mining and aggregate industries, hammers used in scrap shredders, frogs and switches used in railway crossings and buckets and track shoes used in mining power shovels. These novel compositions exhibit a fine grain size having carbonitride precipitates that result in castings having a wear life 20-70% longer than prior art castings. The austenitic manganese steel includes, in weight percentages, the following: about 11.0% to 24.0% manganese, about 1.0% to 1.4% carbon, up to about 1% silicon, up to about 1.9% chromium, up to about 0.25% nickel, up to about 1.0% molybdenum, up to about 0.2% aluminum, up to about 0.25% copper, phosphorus and sulfur present as impurities in amounts of about 0.07% max and about 0.06% max. respectively, microalloying additions of titanium in the amounts of about 0.020-0.Type: GrantFiled: August 17, 2001Date of Patent: June 3, 2003Assignee: The Frog Switch and Manufacturing CompanyInventors: Jerzy W. Kucharczyk, Karl R. Funk, Bernd Kos
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Patent number: 6375895Abstract: Disclosed is a hardfacing alloy capable of withstanding abrasion of the order of silicious earth particles and weldable in crack free state on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfacing alloy has a low coefficient of friction, high abrasion resistance as welded without working, and in tool joints and stabilizers achieves an optimum balance between tool joint and stabilizer wear resistance and induced casing wear. Other embodiments of the invention include tool joints having the hardbanding alloy welded to the outer cylindrical surface to its box and pin members and to stabilizer ribs on the stabilizer used in earth boring, such as boring for oil and gas, other industrial products, methods of producing the hardfacing alloy, and methods of applying the hardfacing alloy to surfaces including preheat and post-welding conditions to withstand abrasive use.Type: GrantFiled: June 14, 2000Date of Patent: April 23, 2002Assignee: ATT Technology, Ltd.Inventor: Roger Auguste Daemen
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Patent number: 6261389Abstract: The present invention provides a synchronizer ring excellent in strength and abrasion resisting property, used in a speed change gear. This synchronizer ring according to the invention is consisted of, by weight, C:0.2˜1.0%, Ni:1.0˜6.0%, Mo:0.6˜3.0%, Cu:1.0˜4.0% and the reminder Fe and inevitable impurities, and is made of Fe sintered alloy of which base composition comprises of mainly martonsite and bainite. And the base composition is preferably consisted of, by volume, martensite: 57˜80%, bainite: 17˜40%, austenite: 8% or less.Type: GrantFiled: April 30, 1998Date of Patent: July 17, 2001Assignee: Nippon Piston Ring Co., Ltd.Inventors: Yoshikatsu Nakamura, Tetsuo Masuyama, Takao Omiya, Hiroshi Takiguchi
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Patent number: 6258316Abstract: A relatively high carbon, water-atomized, steel shot is softened via annealing to render it suitable for ballistic use. The annealing preferably includes decarburization from a surface layer or throughout and preferably provides the shot with a surface Knoop hardness of less than 250.Type: GrantFiled: June 10, 1999Date of Patent: July 10, 2001Assignee: Olin CorporationInventors: Morris C. Buenemann, Jr., Jack D. Dippold, Howard Muldrow, Peter W. Robinson, Brian Mravic
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Publication number: 20010001049Abstract: A cold-rolled steel strip or hot-dip coated cold-rolled steel strip for use as a fire-proof building member has composition consisting of 0.01-0.25 wt. % C, up to 1.5 wt. % Si, 0.05-2.5 wt. % Mn, up to 0.1 wt. % P, no more than 0.02 wt. % S, 0.005-0.1 wt. % Al, 0.05-1.0 wt. % Mo, optionally 0.005-0.2 wt. % one or more selected from Ti, Nb, V and W, optionally one or more of 0.05-0.6 wt. % Cu, 0.05-0.6 wt. % Ni, 0.05-3.0 wt. % Cr and 0.0003-0.003 wt. % B and the balance being essentially Fe except inevitable impurities. The cold-rolled steel strip is manufactured by hot-rolling, acid-pickling, cold-rolling and then annealing at a temperature above its recrystallization temperature but below 950° C. The hot-dip coated cold-rolled steel strip is manufactured in the same way but in-line heating a cold-rolled steel strip at a temperature above its recrystallization temperature but below 950° C. and then immersing it into a coating bath.Type: ApplicationFiled: January 8, 2001Publication date: May 10, 2001Inventors: Yuichi Higo, Seiichi Hamanaka, Toru Fujita
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Patent number: 5876519Abstract: An Fe-based amorphous alloy having a compositional formula in atomic percent represented by Fe.sub.100-a-b-c-d-e-f Al.sub.a Ga.sub.b P.sub.c C.sub.d B.sub.e Si.sub.f, wherein a to f satisfy 4.ltoreq.a.ltoreq.6, 1.ltoreq.b.ltoreq.3, 9.ltoreq.c.ltoreq.12, 5.ltoreq.d.ltoreq.7, 3.ltoreq.e.ltoreq.5 and 0.25.ltoreq.f.ltoreq.4. The Fe-based amorphous alloy is an amorphous magnetic material having an excellent amorphous phase-forming ability, and can easily form an amorphous material having a thickness of 1.5 mm or above by a mold casting method realizing a cooling speed of about 10.sup.3 K/s. Also, because the amorphous alloy has a supercooled liquid region of 50 K or larger, by applying a working method utilizing a super cooled state, amorphous magnetic materials of various form can be prepared.Type: GrantFiled: March 17, 1997Date of Patent: March 2, 1999Assignee: Unitika Ltd.Inventors: Akihisa Inoue, Akira Murakami
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Patent number: 5861565Abstract: A synchronizer ring performing synchronous sliding operation with and separating operation from a rotating object member, is composed of an Fe sintered alloy. The Fe sintered alloy comprises carbon of from 1.2 wt. % to 2.0 wt. %, copper of from over 15.0 wt. % to 25.0 wt. %, and the balance being iron and incidental impurities. A free Cu phase is precipitated in a matrix of the synchronizer ring. The synchronizer ring has a high scuffing resistance, an excellent friction characteristic, and sufficient abrasion resisting property and strength, and moreover, provides an easy manufacture thereof by means of a size working and is stable in quality.Type: GrantFiled: May 29, 1997Date of Patent: January 19, 1999Assignee: Nippon Piston Ring Co., Ltd.Inventors: Takao Omiya, Kunihiro Iguchi, Tetsuo Masuyama
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Patent number: 5648044Abstract: Graphite steel for a machine structural use exhibiting excellent cutting characteristic, cold forging characteristic and fatigue resistance, the graphite steel for a machine structural use containing: C: 0.1 wt % to 1.5 wt %; Si: 0.5 wt % to 2.0 wt %; Mn: 0.1 wt % to 2.0 wt %; B: 0.0003 wt % to 0.0150 wt %; Al: 0.005 wt % to 0.1 wt %; O.ltoreq.0.0030 wt %; P.ltoreq.0.020 wt %; S.ltoreq.0.035 wt %; N: 0.0015 wt % to 0.0150 wt %; and a balance consisting of Fe and unavoidable impurities, wherein substantially overall quantity of C is precipitated as graphite and size of graphite is 20 .mu.m or less.Type: GrantFiled: May 22, 1995Date of Patent: July 15, 1997Assignee: Kawasaki Steel CorporationInventors: Toshiyuki Hoshino, Takashi Iwamoto, Akihiro Matsuzaki, Keniti Amano
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Patent number: 5478523Abstract: A machinable, graphitic steel is disclosed having a composition in weight % of about 1.0 to 1.5 total C; 1.0 to Si; 0.3 to 1.0 Mn; up to 2.0 Ni; up to 0.5 Cr; up to 0.5 Mo; up to 0.1 S; up to 0.5 Al; balance Fe and incidental impurities. The steel is hot worked and cooled to precipitate a controlled amount of graphite for improved machinability and to achieve a controlled amount of matrix carbon for enhanced physical properties. A matrix carbon content of between about 0.2 to 0.8 weight % is desired. The steel may be further heat treated to yield further variations in the microstructure and physical properties.Type: GrantFiled: January 24, 1994Date of Patent: December 26, 1995Assignee: The Timken CompanyInventors: James A. Brusso, George T. Matthews
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Patent number: 5364477Abstract: A magnetic metallic glass alloy exhibits, in combination, high saturation induction and low magnetic anisotropy energy. The alloy has a composition described by the formula Fe.sub.a Co.sub.b B.sub.c Si.sub.d C.sub.e, where "a"-"e" are in atom percent, "a" ranges from about 72 to about 84, "b" ranges from about 2 to about 8, "c" ranges from about 11 to about 16, "d" ranges from about 1 to about 4, and "e" is zero or ranges from about 3 to about 4, with up to about 1 atom percent of Mn being optionally present in the alloy, with the provisos that (i) when "e" is zero and "a" is greater than or equal to 80, "b" cannot exceed 4, (ii) when "e" is zero and "a" is less than 80 by an amount x, "b" cannot exceed (4+4x) and, (iii) the sum ("a"+"b"+"c"+"d"+"e") equals 100. Such an alloy is especially suited for use in large magnetic cores associated with pulse power applications requiring high magnetization rates.Type: GrantFiled: December 23, 1992Date of Patent: November 15, 1994Assignee: AlliedSignal Inc.Inventors: V. R. V. Ramanan, Carl H. Smith
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Patent number: 5211772Abstract: The fine steel wire according to the present invention has a high strength and high toughness, which is used as a rubber reinforcing material for a belt cord or tire cord, or as missile wires. Such a fine steel wire can be obtained by drawing a wire rod for a fine steel wire properly adjusted in its composition and structure, while applying working strain such that the total reduction of area in the final wire drawing step becomes 95% or more.Type: GrantFiled: December 27, 1991Date of Patent: May 18, 1993Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Shinzo Ashida, Nobuhiko Ibaraki, Katsuji Mizutani, Kenji Ochiai
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Patent number: 5117874Abstract: High-strength steel having excellent hydrogen-induced crack resistance, particularly in an environment of wet hydrogen sulfide and wires made thereof and their assembly, steel pipes, steel bands and shielding wires for marine cable are disclosed. This steel contains 0.40 to 0.70% of C, 0.1 to 1% of Si, 0.2 to 1% of Mn, up to 0.25% of P and up to 0.010% of S, and further, if necessary, 0.008 to 0.050% of Al and the balance of Fe and unavoidable impurities, and has a spheroidized structure. In addition, a flexible sour fluid transport pipe made of the high-strength steel band having the above-described composition and a tensile strength of 50 to 80 kg/mm.sub.2 is also disclosed.Type: GrantFiled: February 13, 1990Date of Patent: June 2, 1992Assignee: The Furukawa Electric Co., Ltd.Inventors: Ikuo Ochiai, Hideaki Omori, Manjiro Sato, Masatsugu Murao, Kazuhiko Murao, Hideo Chiba, Tsuneo Okamoto, Tadashi Fuku
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Patent number: 5104464Abstract: A soft magnetic alloy film has a composition formula expressed by Fex Mz Cw. M is at least one metallic element selected from a group consisting of Ti, Zr, Hf, Nb, Ta, Mo or W, or a mixture of these metallic elements. The composition ratio of x, z and w satisfies the relation expressed by 50 atomic %.ltoreq.x.ltoreq.96 atomic %, 2 atomic %.ltoreq.z.ltoreq.30 atomic %, 0.5 atomic %.ltoreq.w.ltoreq.25 atomic %, and x+z+w=100. The metallic structure of the soft magnetic alloy film basically consists of crystal grains having an average grain size of 0.08 .mu.m or below. The metallic structure contains the crystal phase of carbide of the element M.Type: GrantFiled: February 1, 1990Date of Patent: April 14, 1992Assignee: Alps Electric Co., Ltd.Inventor: Naoya Hasegawa
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Method of using an austenitic steel alloy as a wear part subject to gouging abrasion type metal loss
Patent number: 5069871Abstract: A method of producing a crusher wear part and the like subject to gouging abrasion type metal loss wherein the part is made of a modified austenitic (Hadfields) manganese steel having an Aluminum/Carbon ratio of 1.0 to 1.7, the casting being heat treated by heating to 2000.degree.-2050.degree. F. followed by a water quench to provide gouging abrasion resistance at least about 10% higher than that of Hadfields.Type: GrantFiled: May 2, 1990Date of Patent: December 3, 1991Assignee: ESCO CorporationInventor: William E. Fuller -
Patent number: 5067993Abstract: A magnetic core material made of a Fe-Co base alloy for use at high frequencies, and has excellent high-frequency alternating magnetic properties. The core material composition is Co: 45-53% by weight, C: 0.3-3% by weight, one or both of Mn and Si: 0.1-2% by weight, at least one of Mg, Ca, and Ce: 0.1-0.2% by weight, and the remainder Fe and unavoidable impurities. The structure of the alloy comprises a ferrite matrix containing graphite in an amount of from 1-20% by volume dispersed therein. The material is applied, for example, in a dot impact printer and to a pulse motor.Type: GrantFiled: April 14, 1989Date of Patent: November 26, 1991Assignee: Mitsubishi Materials CorporationInventors: Saburo Wakita, Kiyoshi Yamaguchi, Norio Yanagisawa
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Patent number: 5066455Abstract: This invention reveals steel alloys which are particularly suitable for use in manufacturing reinforcing wires for rubber products, such as tires. The steel filaments made by this process have an outstanding combination of strength and ductility. Additionally, the steel alloys of this invention can be patented in a low cost process due to their having a very fast rate of isothermal transformation. This allows the steel in the steel wire being patented to transform from a face centered cubic microstructure to an essentially body centered cubic microstructure within a very short period. This invention more specifically discloses a steel alloy composition which is particularly suitable for use in manufacturing reinforcing wire for rubber products which consists essentially of (a) about 96.5 to about 99.05 weight percent iron, (b) about 0.6 to about 1 weight percent carbon, (c) about 0.1 to about 1 weight percent silicon, (d) about 0.1 to about 1.2 weight percent manganese, (e) about 0.1 to about 0.Type: GrantFiled: July 25, 1990Date of Patent: November 19, 1991Assignee: The Goodyear Tire & Rubber CompanyInventors: Dong K. Kim, Robert M. Shemenski
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Patent number: 5062909Abstract: A magnetic metallic glass alloy exhibits, in combination, high saturation induction and low magnetic anisotropy energy. The alloy has a composition described by the formula Fe.sub.a Co.sub.b B.sub.c Si.sub.d C.sub.e, where "a"-"e" are in atom percent, "a" ranges from about 72 to about 84, "b" ranges from about 2 to about 8, "c" ranges from about 11 to about 16, "d" ranges from about 1 to about 4, and "e" ranges from 0 to about 4, with up to about 1 atom percent of Mn being optionally present. Such an alloy is especially suited for use in large magnetic cores associated with pulse power applications requiring high magnetization rates. Examples of such applications include high power pulse sources for linear induction particle accelerators, induction modules for coupling energy from the pulse source to the beam of these accelerators, magnetic switches in power generators in inertial confinement fusion research, magnetic modulators for driving excimer lasers, and the like.Type: GrantFiled: June 13, 1990Date of Patent: November 5, 1991Assignee: Allied-Signal Inc.Inventors: V. R. V. Ramanan, Carl H. Smith
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Patent number: 4909843Abstract: A highly wear-resistant sintered alloy is to be provided, with which, using conventional sintering technology and no additional hardening treatment, commodity parts are to be produced, which, in respect to their wear property are to be equivalent to chilled cast iron parts. They should have a surface roughness of approximately 50 Rockwell and only a slight shrinkage. This is accomplished with an iron-nickel-copper-molybdenum sintered alloy with addition of phosphorus, which contains a proportion of carbon, which exceeds the phosphorus added by at least a factor of 2. Essentially, the alloy has the following composition:1.0-5.0% (by weight) of nickel (Ni)1.0-3.0% (by weight) of copper (Cu)0.3-1.0% (by weight) of molybdenum (Mo)0.3-0.6% (by weight) of phosphorus (P)1.0-2.Type: GrantFiled: October 2, 1987Date of Patent: March 20, 1990Assignee: Etablissement SupervisInventor: Karl Leithner