To Produce Casting Having Nonhomogenous Composition Patents (Class 164/58.1)
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Patent number: 11484936Abstract: In a semiconductor-mounting heat dissipation base plate including: an insulating substrate to which a metal circuit layer for mounting a semiconductor chip thereon is fixed; a heat dissipation base formed from the same metal material as the metal circuit layer at a side opposite to the metal circuit layer across the insulating substrate and fixed to the insulating substrate similar to the metal circuit layer; and a strengthening member provided in the heat dissipation base so as to be separated from the insulating substrate, the sizes of crystal grains of a metal structure at a part of the heat dissipation base or the metal circuit layer are reduced by a crystal size reducing material adhered to a mold, thereby preventing an adverse effect of a columnar crystal structure.Type: GrantFiled: December 23, 2020Date of Patent: November 1, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Keisuke Tanaka, Daisuke Oya, Mikio Ishihara, Tatsuya Iwasa, Koji Saito, Yuki Wakabayashi
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Patent number: 11428157Abstract: A ferritic aero diesel engine. The ferritic aero diesel engine includes an iron crankcase, a steel crankshaft and eight steel piston assemblies. The iron crankcase has a flat, horizontally opposed eight cylinder arrangement with a first set of cylinder walls defining a first set of cylinders in a first bank and a second set of cylinder walls defining a second set of cylinders in an opposed second bank. The steel crankshaft is rotatably mounted at least partially within the iron crankcase. Each of the steel piston assemblies of the plurality of steel piston assemblies is received within a respective cylinder of the iron crankcase and is coupled to the steel crankshaft. The first and second sets of cylinder walls have a minimum wall thickness of between approximately 4.8 and 5.2 mm.Type: GrantFiled: July 20, 2018Date of Patent: August 30, 2022Assignee: General Atomics Aeronautical Systems, Inc.Inventors: Michael J. Fuchs, Steven M. Weinzierl, Oliver Schneider, Markus Evers
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Patent number: 11219941Abstract: A permanent mold has a base made of metal. The base has a plurality of first mold portions, which are mutually spaced along a longitudinal axis and which are designed to shape a bearing tunnel of a crankcase. Second mold portions are arranged on the first mold portions and consist of a mold material.Type: GrantFiled: October 11, 2019Date of Patent: January 11, 2022Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Christian Motz, Konrad Reitmeier, Andreas Schrattenberger, Thomas Wagner
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Patent number: 8726974Abstract: A method to produce cast iron articles with various graphite morphologies is disclosed that provides cast iron with tailored properties at different locations of the article. Flake graphite morphology is preferably created at locations requiring excellent thermal conductivity or lubricity. Spheroidal graphite morphology is preferably created at locations requiring excellent strength or mechanical fatigue life. These methods may be particularly valuable for the production of heavy duty diesel engine components.Type: GrantFiled: January 28, 2011Date of Patent: May 20, 2014Assignee: Caterpillar Inc.Inventors: James O. Barlow, Marvin G. McKimpson, George B. Kokos
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Publication number: 20130039800Abstract: A hard metal material and a method of manufacturing a component of the hard metal material are disclosed. The hard metal material comprises 5-50 volume % particles of a refractory material dispersed in a host metal. The method comprises forming a slurry of 5-50 volume % particles of the refractory material dispersed in a liquid host metal in an inert atmosphere and pouring the slurry into a mould and forming a casting of the component.Type: ApplicationFiled: February 1, 2011Publication date: February 14, 2013Applicant: WEIR MINERALS AUSTRALIA LTDInventor: Kevin Dolman
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Patent number: 8297340Abstract: Process for producing ductile iron by treating liquid iron with an initializer which is a ferrosilicon alloy comprising an effective amount of barium sufficient to inactivate the oxygen activity of the liquid iron. This is followed at a predetermined time thereafter by treating the liquid iron with a magnesium containing nodularizer, followed by treating the liquid iron with a eutectic graphite nucleation-inducing inoculant, and casting the iron.Type: GrantFiled: June 22, 2007Date of Patent: October 30, 2012Assignee: Foseco International LimitedInventor: Emmanuel Berthelet
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Patent number: 8136571Abstract: A process is used for applying carbiding agents to the surface of ferrous metal castings, using the “lost foam” method. Carbiding agents are applied to the foam form at selected places so that the final product has the desired amount of carbidic content at the right locations to endure high stress applications on the casting.Type: GrantFiled: May 18, 2010Date of Patent: March 20, 2012Inventor: Mark DeBruin
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Publication number: 20110225856Abstract: The present invention discloses a composite tooth for working the ground or rocks, said tooth comprising a ferrous alloy at least partially reinforced with titanium carbide according to a defined geometry, in which said reinforced portion comprises an alternating macro-microstructure of millimetric areas concentrated with micrometric globular particles of titanium carbide separated by millimetric areas essentially free of micrometric globular particles of titanium carbide, said areas concentrated with micrometric globular particles of titanium carbide forming a microstructure in which the micrometric interstices between said globular particles are also filled by said ferrous alloy.Type: ApplicationFiled: August 26, 2009Publication date: September 22, 2011Applicant: MAGOTTEAUX INTERNATIONAL S.A.Inventor: Guy Berton
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Publication number: 20110185993Abstract: A method to produce cast iron articles with various graphite morphologies is disclosed that provides cast iron with tailored properties at different locations of the article. Flake graphite morphology is preferably created at locations requiring excellent thermal conductivity or lubricity. Spheroidal graphite morphology is preferably created at locations requiring excellent strength or mechanical fatigue life. These methods may be particularly valuable for the production of heavy duty diesel engine components.Type: ApplicationFiled: January 28, 2011Publication date: August 4, 2011Applicant: Caterpillar Inc.Inventors: Marvin G. McKimpson, James O. Barlow, George B. Kokos
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Patent number: 7892480Abstract: Dental prostheses are fabricated as a metallic alloy body by a technique that produces scrap alloy. Suitable gold base alloys have only base metal alloying additions which are more readily oxidized than gold and when combined with the gold can be age hardened. Exemplary metals include titanium, zirconium, yttrium and chromium. Scrap from fabricating a dental prosthesis is melted in air so that the base metals are all oxidized and substantially pure gold is reclaimed for reuse in new alloys.Type: GrantFiled: January 25, 2007Date of Patent: February 22, 2011Assignee: The Argen CorporationInventor: Paul J. Cascone
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Publication number: 20090314448Abstract: A method for producing a metal material involves applying, to the surface of the ZAS alloy, an agent comprising a solvent and, dispersed therein, a material containing Cu such as Cu powder and a Cu—Mn alloy powder and preferably, dispersed or dissolved therein, a reducing agent capable of reducing an oxide film present on the surface of the ZAS alloy, and heating the ZAS alloy having the agent applied thereon, to thereby diffuse Cu into the alloy. The metal material comprises a Zn—Al—Sn based alloy (ZAS alloy) and Cu diffused in the alloy, wherein Cu is diffused into the inside of the alloy to a depth from the surface of 0.5 mm or more, the concentration of Cu decreases from the surface of the ZAS alloy towards the inside thereof, and there is present no specific interface between Cu and the ZAS alloy.Type: ApplicationFiled: August 26, 2009Publication date: December 24, 2009Inventors: Mitsuo Kuwabara, Tadashi Okada, Naoji Yamamoto, Masahito Hasuike, Michiharu Hasegawa, Tetsuaki Aoki, Masanori Kogawa, Kazunori Sakamoto, Keizou Tanoue
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Patent number: 7360579Abstract: The invention relates to a method for the production of a cast component, in particular a gas turbine component. The inventive method comprises at least the following steps: a) a crucible and at least one semi-finished product is prepared from an intermetallic titanium-aluminium material; b) the or each semi-finished product made of intermetallic titanium-aluminium material is melted in the crucible; c) at least one additional element or an additional compound is added to the melt, whereby the or each element and/or the or each compound is introduced into the melt according to the melting temperature thereof; d) a casting mold is prepared; e) the casting mold is filled with the melt; f) the melt is solidified in the casting mold; g) the casting component is extracted from the casting mold.Type: GrantFiled: December 22, 2004Date of Patent: April 22, 2008Assignee: G4T GmbHInventors: Manfred Renkel, Wilfried Smarsly
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Patent number: 7081150Abstract: An additive for increasing the toughness of thin-wall iron castings is provided. The additive includes amounts of a non-ferrous metal oxide and a metal sulfide in which the non-ferrous metal has an affinity for oxygen less than that of iron, and the metal has an affinity for sulfur less than that of magnesium. The metals contained in the oxides and sulfides are also not alkali, alkali earth or rare earth metals to reduce the incidence of defect formation in the castings. The metal oxide and metal sulfide, when added to a cast iron melt react with magnesium added to the melt as a spheroidizing graphite element to form nucleation sites having a core of magnesium oxide surrounded by magnesium sulfide. These nucleation sites allow for increased nucleation of graphite, whether in vermicular or spheroidal form, such that the cross-section of the thin-wall iron casting is more uniform, thereby decreasing the amount of carbide formed in the casting and increasing the toughness of the casting.Type: GrantFiled: November 7, 2002Date of Patent: July 25, 2006Inventors: Carl R. Loper, Jr., Simon N. Lekakh
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Patent number: 6973954Abstract: A method of casting parts with gray iron includes the steps of providing molten gray iron metal with controlled carbon, silicon, phosphorous, sulfur, manganese and chromium content; alloying said molten gray iron metal, prior to pouring, with tin to a total tin content of about 0.05% to about 0.10%; inoculating said molten tin-alloyed gray iron metal, prior to pouring, with a gray iron inoculant to an additional silicon addition of from about 0.10% to about 0.12%; and casting the gray iron part from said molten, tin-alloyed inoculated gray iron metal as son as possible after said inoculation.Type: GrantFiled: December 20, 2001Date of Patent: December 13, 2005Assignee: International Engine Intellectual Property Company, LLCInventor: Joseph R. Ward
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Patent number: 6863114Abstract: A gating system for adding an alloying material to a molten base metal in immediate connection with a casting process. The gating system has a runner having an inlet whose cross-sectional area is throttled, a reaction chamber whose sectional area varies along the height of the reaction chamber as a function of the teeming rate, and a pressure and mixing chamber which is connected after the reaction chamber and provided with a partition. This results in a constant alloying material content of the metal being obtained at a varying teeming rate during the casting process.Type: GrantFiled: January 26, 2001Date of Patent: March 8, 2005Assignee: Novacast ABInventor: Rudolf Sillén
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Publication number: 20030116113Abstract: A method of casting parts with gray iron includes the steps of providing molten gray iron metal with controlled carbon, silicon, phosphorous, sulfur, manganese and chromium content; alloying said molten gray iron metal, prior to pouring, with tin to a total tin content of about 0.05% to about 0.10%; inoculating said molten tin-alloyed gray iron metal, prior to pouring, with a gray iron inoculant to an additional silicon addition of from about 0.10% to about 0.12%; and casting the gray iron part from said molten, tin-alloyed inoculated gray iron metal as son as possible after said inoculation.Type: ApplicationFiled: December 20, 2001Publication date: June 26, 2003Inventor: Joseph R. Ward
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Patent number: 6571856Abstract: By studying heat transfer in a sample vessel containing a sample of molten cast iron, it is possible to carry out accurate predictions of the microstructure in which the molten cast iron sample will solidify. This method is also highly suitable for automatisation by using a computer.Type: GrantFiled: June 14, 2001Date of Patent: June 3, 2003Assignee: Sintercast ABInventors: Patrik Popelar, Conny Andersson
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Patent number: 6540005Abstract: A recess (2) forming a pouring gate (2) is provided in a first half (1a) of the mold (1) so as to open out in the parting face (4) in a housing (5) having a top opening (6) in its top portion. A second recess (8) is provided in the second half (1b) of the mold (1) with an opening (9) in the parting face (4) of dimensions smaller than the corresponding dimensions of the housing. The two mold halves (1a, 1b) are assembled together on the parting face (4) and a filter (12) adapted to filter molten metal is inserted into the housing (5) substantially vertically through the top opening (6) thereof.Type: GrantFiled: February 9, 2001Date of Patent: April 1, 2003Assignee: Daussan & CompagnieInventors: Jean Daussan, Gérard Daussan, André Daussan
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Publication number: 20030029595Abstract: A gating system for adding an alloying material to a molten base metal in immediate connection with a casting process. The gating system has a runner (2) having an inlet (7) whose cross-sectional area is throttled, a reaction chamber (4) whose sectional area varies along the height of the reaction chamber (4) as a function of the teeming rate, and a pressure and mixing chamber (5) which is connected after the reaction chamber (4) and provided with a partition (9). This results in a constant alloying material content of the metal being obtained at a varying teeming rate during the casting process.Type: ApplicationFiled: July 24, 2002Publication date: February 13, 2003Inventor: Rudolf Sillen
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Patent number: 6354356Abstract: Disclosed is a method for the determination of the form of graphite in spheroidal and compacted/vermicular cast irons comprising of the first step for collecting molten cast iron, measuring quantity of dissolved oxygen therein and confirming the effect of spherodizing or compacted/vermiculation of graphite in said molten cast iron, the second step for measuring eutectic temperature of said molten cast iron by thermal analyzing, and the third step for comparing said eutectic temperature with a threshold temperature at which said cast iron being separated spherodized graphite phase from compacted/vermiculation phase.Type: GrantFiled: June 22, 1999Date of Patent: March 12, 2002Assignees: Nissabu Corporation, Yuwa Co., Ltd.Inventors: Hidetaka Hiraoka, Mayuki Morinaka, Tsuyoshi Okuzono
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Patent number: 6227282Abstract: The invention relates to a process for the aluminothermic welding of rails, the aluminothermically produced steel being poured into a refractory mold surrounding the rail ends which are to be joined, and alloying additives being contacted with that part of the steel which runs out of the reaction crucible and forms the weld in the rail head region, wherein the alloying with the alloying additives is carried out after the completion of the aluminothermic reaction and separation of the steel from the slag via the diverting plug in the mold, and the overflow in the is closed.Type: GrantFiled: September 12, 1997Date of Patent: May 8, 2001Assignee: Elektro-Thermit GmbHInventors: Frank Kuster, Gerhardus Johannes Mulder, Donald MacRae, Michael Steinhorst
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Patent number: 6216768Abstract: The ratio of the number of free holes (4a) in a filtering plate (2, 3), located in the areas (9) which are not covered by the an insert (7) of treating material, on the one hand, to the total number of holes (4, 4a) in said filtering plate (2, 3), on the other hand, is not less than 10% and/or not above 75%.Type: GrantFiled: February 4, 1999Date of Patent: April 17, 2001Assignee: Daussan et CompagnieInventors: Jean Daussan, Gérard Daussan, André Daussan