Patents Assigned to Mitsubishi Aluminum Co., Ltd.
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Publication number: 20120318488Abstract: An aluminum alloy heat exchanger formed by assembling and brazing an aluminum alloy tube and an aluminum alloy fin to each other, wherein a coating for brazing comprising 1 to 5 g/m2 of Si powder, 3 to 20 g/m2 of Zn containing flux, and 0.2 to 8.3 g/m2 of binder is formed on the surface of the aluminum alloy tube; the fin contains 0.8 to 2.0% by mass of Mn, Si in an amount of 1/2.5 to 1/3.5 of Mn content; less than 0.30% by mass of Fe, and Zn in an amount that is controlled in relation with the amount of the Zn containing flux in the coating for brazing to be in a region enclosed by points A, B, C, D, E, F of FIG.Type: ApplicationFiled: February 25, 2011Publication date: December 20, 2012Applicant: Mitsubishi Aluminum Co., LtdInventors: Yasunori Hyogo, Michihide Yoshino
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Publication number: 20100116472Abstract: A heat exchanger tube comprising an Al alloy extruded tube, and a flux layer including Si powder, Zn-containing flux, and binder formed on an outer surface of the Al alloy extruded tube, wherein an amount of the Si powder applied on the Al alloy extruded tube is in a range of 1 g/m2 or more and 5 g/m2 or less, an amount of the Zn containing flux applied on the Al alloy extruded tube is in a range of 3 g/m2 or more and 20 g/m2 or less, and the Si powder has a particle diameter distribution such that 99% particle diameter is 5 ?m or more and 20 ?m or less, and an amount of coarse particle having a diameter of not smaller than 5 times (D99) is less than 1 ppm by volume.Type: ApplicationFiled: January 20, 2010Publication date: May 13, 2010Applicant: MITSUBISHI ALUMINUM CO., LTD.Inventors: Masaya KATSUMATA, Yasunori HYOGO, Akira WATANABE
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Publication number: 20100051247Abstract: A heat exchanger comprising a tube, a fin, and a header pipe, wherein the tube contains, in mass %, 0.15 to 0.45% of Mn, 0.20 to 0.50% of Si, and the balance of Al and unavoidable impurities, and is coated with a coating of brazing composition containing 1.0 to 5.0 g/m2 of Si powder, 4.0 to 10.0 g/m2 of KZnF3, and 0.5 to 3.0 g/m2 of binder; the fin contains, in mass %, 1.20 to 1.80% of Zn, 0.70 to 1.20% of Si, 0.30 to 0.80% of Fe, 0.90 to 1.50% of Mn, one or two or more selected from 0.05 to 0.20% of Zr, 0.01 to 0.10% of V, and 0.01 to 0.10% of Cr, and the balance of Al and unavoidable impurities; and the header pipe comprises a core material, outer sacrificial corrosion protection material, and an inner brazing material.Type: ApplicationFiled: September 2, 2009Publication date: March 4, 2010Applicants: Calsonic Kansei Corporation, Mitsubishi Aluminum Co., Ltd.Inventors: Masahiro Sogabe, Takumi Funatsu, Masayoshi Shinhama, Yasunori Hyogo, Masaya Katsumata, Masami Asano
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Patent number: 7306890Abstract: The present invention provides an aluminum alloy plate for use as a lithographic printing plate having an improved uniformity of a surface roughened by electrolytic etching and wherein streaking does not occur, and a method for producing the same. The present invention is characterized in comprising, in wt %, Fe: 0.1 to 0.6%; Si: 0.02 to 0.2%; Cu: 0.001 to 0.02%; Zn: 0.01 to 0.1%; Mg: 0.005 to 0.1%; Ti: 0.001 to 0.05%, and the remainder Al and inevitable impurities, and an average value of the crystal particle size is 60 ?m or less in a direction perpendicular to the rolling direction.Type: GrantFiled: December 27, 2002Date of Patent: December 11, 2007Assignees: Mitsubishi Aluminum Co., Ltd., Kodak Polychrome Graphics LLCInventors: Mitsuo Ishida, Keitarou Yamaguchi
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Publication number: 20060000586Abstract: A method of making a heat exchanger tube having higher corrosion resistance is provided. The heat exchanger tube includes an Al alloy extruded tube, and a flux layer containing a Si powder and a Zn-containing flux formed on the external surface of the Al alloy extruded tube, wherein an amount of the Si powder applied to the Al alloy extruded tube is not less than 1 g/m2 and not more than 5 g/m2, and an amount of the Zn-containing flux applied to the Al alloy extruded tube is not less than 5 g/m2 and not more than 20 g/m2.Type: ApplicationFiled: September 6, 2005Publication date: January 5, 2006Applicant: MITSUBISHI ALUMINUM CO., LTD.Inventors: Masaya Katsumata, Yasunori Hyogo, Akira Watanabe
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Patent number: 6946095Abstract: The invention provides an internal filter with an improved filtering ability of removing particularly fine inclusion particles from molten aluminum or molten aluminum alloy. The internal filter includes an aggregate meshed member made of a refractory material and a coating layer formed on a surface of the aggregate meshed member. The coating layer contains a soda silicate that is able to be softened or viscous at a temperature of the molten aluminum alloy.Type: GrantFiled: June 8, 2001Date of Patent: September 20, 2005Assignees: Kabushiki Kaisha Kobe Seiko Sho, Showa Denko K.K., Sky Aluminium Co., Ltd., Sumitomo Light Metal Industries, Ltd., Nippon Light Metal Company, Ltd., The Furukawa Electric Co., Ltd., Mitsubishi Aluminum Co., Ltd.Inventors: Masakatsu Yokota, Kenji Osumi, Yutaka Nagakura
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Patent number: 6932405Abstract: A vehicle body structure of the present invention includes a side-frame disposed to extend along one direction, a side sill disposed to extend in the one direction alongside the side-frame on the outside thereof, a cross member disposed to extend in a direction in which the cross member intersects with the side-frame and which is joined to a side portion of the side-frame to form a vehicle body together with the side-frame, and a gusset provided between the side-frame and the side sill on a longitudinal extension of the cross member, which extends in a smaller cross section than that of the cross member from a joint portion where the cross member is joined to the side-frame until the gusset comes into abutment with the side sill while passing through the side-frame and which is formed as an integral part of the cross member.Type: GrantFiled: April 23, 2004Date of Patent: August 23, 2005Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Aluminum Co., Ltd.Inventors: Hayami Nakagawa, Satoshi Yanagimoto, Yusuke Kimura
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Patent number: 6893062Abstract: A bumper beam for automobiles is composed in cross section of a top wall, a bottom wall opposed to the top wall, a pair of lateral walls connecting the top and bottom walls at opposite ends, one of the lateral walls being a collision side lateral wall and the other a vehicle-mounted side lateral wall, and a connection rib provided intermediate between the top and bottom walls and connecting the lateral walls. The collision side lateral wall is thicker than the vehicle-mounted side lateral wall, and both corners at opposite ends of the collision side lateral wall are curved with a radius of curvature R of 0.1-0.3 of the length of the collision side lateral wall and both corners at opposite ends of the vehicle-mounted side lateral wall are curved with a radius of curvature of 0.6-2.0 of the thickness of the vehicle-mounted side lateral wall. Alternatively, radius of curvature R may be 0.2-0.6 of the length of the bottom wall.Type: GrantFiled: October 23, 2003Date of Patent: May 17, 2005Assignees: Mitsubishi Aluminum Co., Ltd., Unipres CorporationInventors: Keiji Amano, Yoshiya Suzuki, Hideo Kozuma
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Patent number: 6843307Abstract: A heat pipe unit is comprised of a tank, a plurality of pipes provided upright on and joined to a side of the tank to be in communication with the tank, the pipes being closed at an end thereof opposite an end where the pipes are joined to the tank; a working fluid sealed in the tank and movable between the plurality of pipes and the tank, and a plurality of fins fitted over and assembled to the plurality of pipes. The tank of this heat pipe unit is embedded in a base block of metal to provide a heat pipe type heat exchanger. A plurality of heat pipe units may be arranged in a row on the base block. The tank is preferably formed from a pipe of circular cross section and has spiral grooves provided on an inner surface thereof. The heat pipe unit and the heat pipe type heat exchanger are simple in structure and excellent in cooling performance, and are easy to produce.Type: GrantFiled: July 29, 2003Date of Patent: January 18, 2005Assignees: Mitsubishi Aluminum Co., Ltd., MA Fabtec Co., Ltd.Inventors: Takaharu Yuyama, Masakazu Nakanishi
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Publication number: 20050006065Abstract: A heat exchanger tube having higher corrosion resistance is provided. The heat exchanger tube includes an Al alloy extruded tube, and a flux layer containing a Si powder and a Zn-containing flux formed on the external surface of the Al alloy extruded tube, wherein an amount of the Si powder applied to the Al alloy extruded tube is not less than 1 g/m2 and not more than 5 g/m2, and an amount of the Zn-containing flux applied to the Al alloy extruded tube is not less than 5 g/m2 and not more than 20 g/m2.Type: ApplicationFiled: April 14, 2004Publication date: January 13, 2005Applicant: MITSUBISHI ALUMINUM CO., LTD.Inventors: Masaya Katsumata, Yasunori Hyogo, Akira Watanabe
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Publication number: 20040245685Abstract: The invention provides an internal filter with an improved filtering ability of removing particularly fine inclusion particles from molten aluminum or molten aluminum alloy. The internal filter includes an aggregate meshed member made of a refractory material and a coating layer formed on a surface of the aggregate meshed member. The coating layer contains a soda silicate that is able to be softened or viscous at a temperature of the molten aluminum alloy.Type: ApplicationFiled: June 8, 2001Publication date: December 9, 2004Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO, SHOWA DENKO K.K., SKY ALUMINIUM CO., LTD., SUMITOMO LIGHT METAL INDUSTRIES, LTD., NIPPON LIGHT METAL COMPANY, LTD., THE FURUKAWA ELECTRIC CO., LTD., MITSUBISHI ALUMINUM CO., LTD.Inventors: Masakatsu Yokota, Kenji Osumi, Yutaka Nagakura
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Patent number: 6811893Abstract: A thermoplastic resin-coated aluminum plate is provided which is less liable to develop ply separation or cracks in a resin coating film during drawing or ironing and on which the resin coating film is less likely to peel off the aluminum plate. A semi-non-porous anodized film is formed on at least one side of the aluminum plate, a coating layer is formed on the semi-non-porous anodized film, and a thermoplastic resin coating film is formed on the coating layer.Type: GrantFiled: May 13, 2003Date of Patent: November 2, 2004Assignees: Mitsubishi Plastics, Inc., Mitsubishi Aluminum Co., Ltd.Inventors: Yoshio Wakayama, Keitaro Yamaguchi, Nobuhiro Sakata
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Patent number: 6743308Abstract: The present invention provides an aluminum alloy structural plate excelling in strength and corrosion resistance, in particular, resistance to stress corrosion cracking, and a method of manufacturing the aluminum alloy plate. This aluminum alloy structural plate includes 4.8-7% Zn, 1-3% Mg, 1-2.5% Cu, and 0.05-0.25% Zr, with the remaining portion consisting of Al and impurities, wherein the aluminum alloy structural plate has a structure in which grain boundaries with a ratio of misorientations of 3-10° is 25% or more at the plate surface. The aluminum alloy structural plate is manufactured by: homogenizing an ingot of an aluminum alloy having the above composition; hot rolling the ingot; repeatedly rolling the hot-rolled product at 400-150° C. so that the degree of rolling is 70% or more to produce a plate with a specific thickness, or repeatedly rolling the hot-rolled product at a material temperature of 400-150° C. in a state in which rolls for hot rolling are heated at 40° C.Type: GrantFiled: November 2, 2001Date of Patent: June 1, 2004Assignees: Kabushiki Kaisha Kobe Seiko Sho., Sumitomo Light Metal Industries, Ltd., Nippon Light Metal Co., Ltd., The Furukawa Electric Co., Ltd., Mitsubishi Aluminum Co., Ltd.Inventors: Hiroki Tanaka, Hiroki Esaki, Tadashi Minoda
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Publication number: 20040084910Abstract: A bumper beam for automobiles is composed in cross section of a top wall, a bottom wall opposed to the top wall, a pair of lateral walls connecting the top and bottom walls at opposite ends, one of the lateral walls being a collision side lateral wall and the other a vehicle-mounted side lateral wall, and a connection rib provided intermediate between the top and bottom walls and connecting the lateral walls. The collision side lateral wall is thicker than the vehicle-mounted side lateral wall, and both corners at opposite ends of the collision side lateral wall are curved with a radius of curvature R of 0.1-0.3 of the length of the collision side lateral wall and both corners at opposite ends of the vehicle-mounted side lateral wall are curved with a radius of curvature of 0.6-2.0 of the thickness of the vehicle-mounted side lateral wall. Alternatively, radius of curvature R may be 0.2-0.6 of the length of the bottom wall.Type: ApplicationFiled: October 23, 2003Publication date: May 6, 2004Applicants: MITSUBISHI ALUMINUM CO., LTD., Unipres CorporationInventors: Keiji Amano, Yoshiya Suzuki, Hideo Kozuma
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Publication number: 20040069461Abstract: A heat pipe unit is comprised of a tank, a plurality of pipes provided upright on and joined to a side of the tank to be in communication with the tank, the pipes being closed at an end thereof opposite an end where the pipes are joined to the tank; a working fluid sealed in the tank and movable between the plurality of pipes and the tank, and a plurality of fins fitted over and assembled to the plurality of pipes. The tank of this heat pipe unit is embedded in a base block of metal to provide a heat pipe type heat exchanger. A plurality of heat pipe units may be arranged in a row on the base block. The tank is preferably formed from a pipe of circular cross section and has spiral grooves provided on an inner surface thereof. The heat pipe unit and the heat pipe type heat exchanger are simple in structure and excellent in cooling performance, and are easy to produce.Type: ApplicationFiled: July 29, 2003Publication date: April 15, 2004Applicants: MITSUBISHI ALUMINUM CO., LTD., MA Fabtec Co., Ltd.Inventors: Takaharu Yuyama, Masakazu Nakanishi
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Patent number: 6719857Abstract: The present invention provides a die casting magnesium alloy having excellent heat resistance and castability, and the alloy of the present invention is a die casting magnesium alloy having excellent heat resistance and castability, comprising 2 to 6% by weight of Al, 0.3 to 2% by weight of Ca, 0.01 to 1% by weight of Sr, 0.1 to 1% by weight of Mn, the balance magnesium and unavoidable impurities. According to the present invention, more excellent effects can be obtained in the composition wherein rare earth elements are added to the composition described above.Type: GrantFiled: February 23, 2001Date of Patent: April 13, 2004Assignee: Mitsubishi Aluminum Co., Ltd.Inventors: Koichi Ohori, Yusuke Nakaura, Takeshi Sakagami
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Patent number: 6607578Abstract: A continuous vacuum refining method of molten metals, wherein impurities in the molten metal are eliminated by evaporation by stirring the molten metal (1) in the molten liquid stirring part B in the evacuated and pre-heated vacuum chamber, the molten liquid is transferred from the stirring part B to the tapping part C in the chamber through connecting holes, the molten liquid is continuously guided into the vessel in the refined molten liquid recovery chambers (10a), (10b) through the recovery passageways (8a), (8b) connected to the tapping part C, the recovery chamber being evacuated and connected with the passageway, and the refined molten liquid (9) is recovered after returning the pressure to the atmospheric pressure, wherein the molten liquid is discharged using plural passageways and plural recovery chambers connected with the respective passageways with alternating the recovery chamber. An apparatus employed for this method.Type: GrantFiled: November 21, 2001Date of Patent: August 19, 2003Assignees: Kobe Steel, Ltd., Showa Denka K.K., Sky Aluminum Co., Ltd., Nippon Light Metal Company, Ltd., The Furukawa Electric Co., Ltd, Mitsubishi Aluminum Co., Ltd.Inventors: Mitsuhiro Otaki, Kensuke Mori
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Patent number: 6572715Abstract: The present invention provides an aluminum alloy support body for a presensitized plate in which the uniformity of the grained surface due to electrochemical etching is further improved, and a method of producing the same. The aluminum alloy support body for the presensitized plate according to the present invention has a composition comprising 0.1 to 0.7% by weight of Fe; 0.01 to 0.2% by weight of Si; 0.005 to 1.0% by weight of one or more rare earth elements; and the balance of Al and unavoidable impurities. In the present invention, the aluminum alloy support body may further contain 0.005 to 0.1% by weight of Ni and 0.005 to 0.3% by weight of one or more rare earth elements. One or more elements of Ce, La and Nd can be selected as the rare earth elements.Type: GrantFiled: February 7, 2001Date of Patent: June 3, 2003Assignees: Kodak Polychrom Graphics, LLC, Mitsubishi Aluminum Co., Ltd.Inventors: Hirotaka Komine, Mitsuo Ishida, Keitarou Yamaguchi
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Patent number: 6500558Abstract: The present invention relates to an aluminum material to which a surface treatment is performed, and has as its objective the provision of a surface-treated aluminum material that has excellent adhesive properties with organic resin film. The present invention further aims to provide a method for producing the aforementioned. In the present invention's surface-treated aluminum material, a non-porous anodic oxide film is formed to the surface of the aluminum or aluminum alloy. This non-porous anodic oxide film has a thickness in the range of 5˜800 nm, a porosity of 20% or less, and contains in an amount of 50 ppm or more at least one of silicon, phosphorous, boron or carbon as a component. As a result of this structure, the adhesive properties between organic resin film and non-porous anodic oxide film can be increased.Type: GrantFiled: May 31, 2001Date of Patent: December 31, 2002Assignee: Mitsubishi Aluminum Co. Ltd.Inventor: Keitarou Yamaguchi
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Patent number: 6467467Abstract: A method for the plasma-chemical reduction of gaseous and/or solid pollutants in exhaust gases of internal combustion engines by using dielectric-barrier discharges is proposed, the dielectric-barrier discharges being carried out in the combustion space (4) of the internal combustion engine.Type: GrantFiled: May 15, 2001Date of Patent: October 22, 2002Assignee: Mitsubishi Aluminum Co., LTDInventor: Karl F. Massholder