Patents Assigned to UACJ CORPORATION
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Publication number: 20190112691Abstract: Provided are: an Al—Mg—Si-based aluminum alloy material including an aluminum alloy including 0.10 to 1.50 mass % (hereinafter, “%”) Si and 0.10 to 2.00% of Mg, in which an oxide coating film mainly containing aluminum is formed on a surface of the aluminum alloy material, a Mg—Si-based crystallized product having an equivalent circle diameter of 0.1 to 5.0 ?m is contained at 100 to 150,000 particles/mm2, a Mg—Si-based crystallized product having an equivalent circle diameter of more than 5.0 ?m and 10.0 ?m or less is contained at 5 particles/mm2 or less, and the oxide coating film includes Si at a maximum concentration of 0.1 to 40.0% and Mg at a maximum concentration of 0.1 to 20.0%; a method for producing the aluminum alloy material; and an aluminum alloy clad material, in which the aluminum alloy material is clad on at least one surface of an aluminum core material.Type: ApplicationFiled: April 4, 2017Publication date: April 18, 2019Applicant: UACJ CorporationInventors: Takatoshi SHIMADA, Kazuko TERAYAMA, Yoshiyuki OYA
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Publication number: 20190105936Abstract: The present invention provides a coating material that can improve gravure printing characteristics of the printing surface of a printing substrate to favorably transfer an ink fed in the cell of a gravure printing roll to the printing surface of the printing substrate, thereby achieving the beautiful gravure printing. The coating material of the present invention is a coating material for forming a surface layer serving as a printing surface on a printing substrate to which gravure printing is to be applied, and the coating material is characterized by including a pigment including an inorganic particulate and a skin layer that is formed on a surface of the inorganic particulate and includes an organic compound.Type: ApplicationFiled: March 24, 2017Publication date: April 11, 2019Applicant: UACJ CORPORATIONInventors: Hiroshi NISHIO, Osamu KATOH, Yukie KITADA
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Patent number: 10221472Abstract: A structural aluminum alloy plate includes 7.0% to 12.0% by mass of Zn, 1.5% to 4.5% by mass of Mg, 1.0% to 3.0% by mass of Cu, 0.05% to 0.30% by mass of Zr, 0.005% to 0.5% by mass of Ti, 0.5% or less by mass of Si, 0.5% or less by mass of Fe, 0.3% or less by mass of Mn, 0.3% or less by mass of Cr, and the balance that includes aluminum and inevitable impurities. A method of producing the structural aluminum alloy plate is also provided.Type: GrantFiled: November 13, 2014Date of Patent: March 5, 2019Assignee: UACJ CORPORATIONInventors: Hidetaka Nakanishi, Kazushige Norikane, Mineo Asano
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Publication number: 20190066724Abstract: An aluminum alloy substrate for a magnetic disk, wherein the sum of the circumferences of second phase particles having the longest diameter of 4 ?m or more and 30 ?m or less in the metal microstructure is 10 mm/mm2 or more.Type: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Applicants: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.Inventors: Toshihiro NAKAMURA, Takashi NAKAYAMA, Kimie IMAKAWA, Wataru KUMAGAI, Sadayuki TODA, Kotaro KITAWAKI, Takuya MURATA, Yu MATSUI, Makoto YONEMITSU, Hideyuki HATAKEYAMA
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Patent number: 10208370Abstract: An aluminum alloy contains, in mass percent, Zn: 2.5% or more and less than 5.0%, Mg: 2.2% or more and 3.0% or less, and Ti: 0.001% or more and 0.05% or less, Cu: 0.10% or less, Zr: 0.10% or less, Cr: 0.03% or less, Fe: 0.30% or less, Si: 0.30% or less, and Mn: 0.03% or less, the remainder being composed of Al and unavoidable impurities. In addition, the tensile strength is 380 MPa or more; the electrical conductivity is 38.0% IACS or more; and the metallographic structure is composed of a recrystallized structure.Type: GrantFiled: September 26, 2014Date of Patent: February 19, 2019Assignee: UACJ CORPORATIONInventors: Hidenori Hatta, Satoshi Udagawa, Takero Watanabe
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Publication number: 20190032972Abstract: A heat-exchanger fin material which has a substrate composed of aluminum and a coating film formed on the substrate. The coating film is composed of a one-layered or two or more-layered coating and has a hydrophilic colored coating on its outermost surface. The hydrophilic colored coating contains an acrylic-modified epoxy resin (A), a melamine resin (B), a perfluoroalkyl group-containing alcohol resin (C), and a pigment (D). The content of the pigment (D) in the hydrophilic colored coating is 1 to 80 mg/m2. The water-contact angle of the hydrophilic colored coating is 20° or less. The elution ratio of the hydrophilic colored coating into running water is 1 mass % or less after an immersion test in which the heat-exchanger fin material is immersed in running water with a flow rate of 5 L/hour for 24 hours. A heat exchanger which includes a fin composed of the aforesaid heat-exchanger fin material.Type: ApplicationFiled: March 24, 2017Publication date: January 31, 2019Applicant: UACJ CORPORATIONInventors: Yoshiya SEKO, Tomoaki TOYAMA, Kaoru UEDA
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Publication number: 20190024218Abstract: A high-strength, highly-elongatable aluminum-alloy foil contains, in mass %, Fe: 1.0% or more and 2.0% or less and Mn: 0.05% or less, and unavoidable impurities. The aluminum-alloy foil has an average crystal-grain size at a foil surface of 2.5 ?m or less, and a ratio of the surface-area percentages of the crystal orientations A{112}<111>/A{101}<121> is 3.0 or more. A{112}<111> is the percentage, with respect to the total surface area, of the surface areas of crystal grains in which the crystal orientation is in a range within 15° from {112}<111> in an orientation-mapping image of the foil surface produced by electron backscatter diffraction. A{101}<121> is the percentage, with respect to the total surface area, of the surface areas of the crystal grains in which the crystal orientation is in a range within 15° from {101}<121> in the orientation-mapping image.Type: ApplicationFiled: January 24, 2017Publication date: January 24, 2019Applicant: UACJ CorporationInventors: Yuichi TANAKA, Tetsuya MOTOI
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Patent number: 10183362Abstract: A clad aluminum alloy material exhibiting favorable corrosion resistance and brazeability in an alkaline environment is shown by a clad aluminum alloy material with excellent brazeability and corrosion resistance in which one surface of an aluminum alloy core material is clad with a sacrificial anode material and the other surface is clad with brazing filler material. The core material includes an aluminum alloy of Si: 0.3-1.5%, Fe: 0.1-1.5%, Cu: 0.2-1.0%, Mn: 1.0-2.0%, and Si content+Fe content ?0.8%, wherein the 1-20 ?m equivalent circle diameter Al—Mn—Si—Fe-based intermetallic compound density is 3.0×105 to 1.0×106 pieces/cm2, and the 0.1 ?m to less than 1 ?m equivalent circle diameter Al—Mn—Si—Fe-based intermetallic compound density is at least 1.0×107 pieces/cm2. The sacrificial anode material includes an aluminum alloy containing Si: 0.1-0.6%, Zn: 1.0-5.0%, and Ni: 0.1-2.0%.Type: GrantFiled: March 11, 2015Date of Patent: January 22, 2019Assignee: UACJ CorporationInventor: Wataru Narita
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Publication number: 20190011201Abstract: Use of a heat transfer tube in a damp environment in air-conditioning equipment and exposed to corrosive action caused by a corrosive medium comprising at least one lower carboxylic acid, the heat transfer tube a copper tube comprising 0.10-1.0% by weight of P and the balance consisting of Cu and inevitable impurities. The corrosive action progresses in the form of an ants' nest from an outer surface of the heat transfer tube in a direction of its wall thickness, wherein. Also, use of a copper tube comprising 0.10-1.0% by weight of P and the balance consisting of Cu and inevitable impurities for improving corrosion-resistance against ant nest corrosion caused by a corrosive medium consisting of a lower carboxylic acid in a damp environment, method of inhibiting ants' nest corrosion in a heat transfer tube, and a method of positioning a tube in an air conditioning apparatus or a refrigeration apparatus.Type: ApplicationFiled: September 12, 2018Publication date: January 10, 2019Applicants: UACJ Corporation, UACJ Copper Tube CorporationInventors: Kozo KAWANO, Shinobu SUZUKI
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Patent number: 10161693Abstract: An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; more than 1.0 mass % but not more than 2.0 mass % of Fe; 0.4 to 1.0 mass % of Mn; and 0.4 to 1.0 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 ?m is less than 1×107 particles/mm2, and that a density of second phase particles having a circle-equivalent diameter of 0.1 ?m or more is 1×105 particles/mm2 or more, wherein a tensile strength before braze-heating, TSB (N/mm2), a tensile strength after braze-heating, TSA (N/mm2), and a fin sheet thickness, t (?m), satisfy: 0.4?(TSB?TSA)/t?2.1, and wherein the sheet thickness is 150 ?m or less; and a method of producing the same.Type: GrantFiled: January 4, 2016Date of Patent: December 25, 2018Assignee: UACJ CORPORATIONInventors: Atsushi Fukumoto, Junichi Mochizuki, Akio Niikura
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Publication number: 20180363995Abstract: Provided are an aluminum alloy brazing sheet for heat exchangers, which exhibits excellent formability and brazeability, and an advantageous process for producing the same. The aluminum alloy brazing sheet for heat exchangers according to the present invention is configured such that: the aluminum alloy composition of a core material and the aluminum alloy composition and temper of a filler material are respectively controlled; and a core material portion of the brazing sheet has a specific electric resistivity at room temperature and a specific dispersion ratio of second phase particles. The brazing sheet is configured to further exhibit certain properties in terms of a work hardening exponent (n-value) where a nominal strain is within a range of 1%-2% and in terms of a push-in depth when a penetration crack is generated in a punch stretch forming test using a round-head punch having a diameter of 50 mm.Type: ApplicationFiled: August 23, 2018Publication date: December 20, 2018Applicant: UACJ CorporationInventors: Wataru NAKAGAWA, Satoshi TANAKA
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Patent number: 10150186Abstract: A hollow aluminum structure that will be brazed includes at least one brazing sheet having a filler metal layer clad onto a core layer. The core layer is composed of aluminum or an aluminum alloy containing less than 0.2 mass % Mg. The filler metal layer is composed of an aluminum alloy that contains Si: 4.0-13.0 mass % and Bi: 0.01-0.3 mass %, and further contains Li: 0.004-0.08 mass % and/or Be: 0.006-0.12 mass %, the filler metal layer containing less than 0.1 mass % Mg. The hollow aluminum structure is assembled such that the filler metal layer is present at locations that will form both an interior-facing brazed joint and an exterior-facing brazed joint. Then, flux is applied onto the filler metal layer at the location that will form the exterior brazed joint, and the hollow aluminum structure heated in an inert gas atmosphere to form the interior brazed joint and the exterior brazed joint.Type: GrantFiled: November 13, 2015Date of Patent: December 11, 2018Assignee: UACJ CORPORATIONInventors: Yutaka Yanagawa, Yasunaga Itoh, Tomoki Yamayoshi
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Patent number: 10145630Abstract: An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; 0.1 to 1.0 mass % of Fe; 0.8 to 1.8 mass % of Mn; and 0.4 to 2.5 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 ?m is less than 1×107 particles/mm2, and that a density of second phase particles having a circle-equivalent diameter of 0.1 ?m or more is 5×104 particles/mm2 or more, wherein a tensile strength before braze-heating, TSB (N/mm2), a tensile strength after braze-heating, TSA (N/mm2), and a sheet thickness of the fin material, t (?m), satisfy a relationship: 0.4?(TSB?TSA)/t?2.1, and wherein the sheet thickness is 150 ?m or less; and a method of producing the same.Type: GrantFiled: January 4, 2016Date of Patent: December 4, 2018Assignee: UACJ CORPORATIONInventors: Atsushi Fukumoto, Junichi Mochizuki, Akio Niikura
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Publication number: 20180313610Abstract: An extruded aluminum flat multi-hole tube manufactured by extrusion molding includes therein a plurality of refrigerant passages extending in a tube length direction and including an upper wall surface and a lower wall surface opposed to each other and a pair of opposed sidewall surfaces. A ridge extending in the tube length direction is formed only on the upper wall surface of the refrigerant passage. The height of the ridge is 5 to 25% of the vertical width of the refrigerant passage. The ratio of the horizontal width at ½ the height of the ridge with respect to the horizontal width of the refrigerant passage is 0.05 to 0.30. The ratio of the horizontal width per inter-ridge flat portion of the upper wall surface with respect to the horizontal width of the refrigerant passage is 0.20 or less.Type: ApplicationFiled: October 28, 2016Publication date: November 1, 2018Applicants: UACJ Corporation, UACJ Extrusion CorporationInventors: Sayo Fukada, Mamoru Houfuku
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Publication number: 20180313616Abstract: Provided is a corrosion resistant copper tube which can exhibit a further improved resistance to ant nest corrosion, and which is suitably usable as a heat transfer tube and refrigerant tube in air-conditioning equipment and refrigerating equipment. The copper tube is formed of a copper material comprising a copper alloy consisting of 0.15-0.50% by weight of phosphorus and the balance being copper and impurities, wherein the copper material includes phosphorus oxide particles, such that a number density of particles having a circle equivalent diameter of not less than 0.1 ?m among the phosphorus oxide particles is not more than 50000/mm2.Type: ApplicationFiled: June 8, 2018Publication date: November 1, 2018Applicants: UACJ CORPORATION, UACJ COPPER TUBE CORPORATIONInventors: Yoshihiko KYO, Hirokazu TAMAGAWA, Yoshiyuki OYA
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Publication number: 20180304415Abstract: A brazing method of performing brazing on an aluminum alloy brazing sheet by increasing a temperature from 200° C. to a brazing temperature in an inert gas atmosphere with a dew point controlled to ?20° C. or lower, thereafter increasing the temperature in an inert gas atmosphere with a dew point controlled to ?40° C. or lower and an oxygen concentration controlled to 100 ppm or lower, and performing brazing heating in an inert gas atmosphere at a temperature of 580° C. to 615° C. without using flux. The aluminum alloy brazing sheet has a structure in which one or both of a core material and a brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr), and oxide particles including the X atoms and having a volume change ratio of 0.99 or lower are formed on a surface thereof.Type: ApplicationFiled: October 13, 2016Publication date: October 25, 2018Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Atsushi Fukumoto
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Publication number: 20180298932Abstract: A welded joint comprising an aluminum-based base material comprising an aluminum alloy or pure aluminum and a copper-based base material comprising a copper alloy or pure copper joined by a weld metal portion is provided. The weld metal portion contains copper in ranges of less than 75% by mass and silicon in ranges of less than 13% by mass and has a higher content of copper and silicon than the aluminum-based base material.Type: ApplicationFiled: April 10, 2018Publication date: October 18, 2018Applicant: UACJ CorporationInventors: Takashi Murase, Shohei Yomogida, Toshihiko Fukuda
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Publication number: 20180297138Abstract: An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.Type: ApplicationFiled: October 13, 2016Publication date: October 18, 2018Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Atsushi Fukumoto
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Patent number: 10100389Abstract: An aluminum alloy connector which is excellent in extrusion property and sacrificial anode property, the connector being extruded in a hollow shape from an aluminum alloy extrusion material consisting of 0.2 to 0.8% (hereinafter, “%” means “mass %”) of Si, 0.45 to 0.9% of Mg, 1.0 to 3.5% of Zn, 0.001 to 0.2% of Ti and the balance of Al plus unavoidable impurities. An electric potential of said aluminum alloy extrusion connector is lower than an electric potential of a pipe member made of an Al—Mg—Si series alloy or an Al—Mn series alloy which is to be swaged to the connector, by 100 mV or more.Type: GrantFiled: September 15, 2015Date of Patent: October 16, 2018Assignees: UACJ Corporation, Denso Corporation, Denso Air Systems CorporationInventors: Satoshi Wakaguri, Akira Ichinose, Toshiyuki Kakinoki, Tatsuhito Matsumoto
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Patent number: 10099320Abstract: An aluminum alloy brazing sheet having high corrosion resistance is provided, which develops the sacrificial anticorrosion effect in both surfaces of the sheet, which has the brazing function in one of both the surfaces, and which prevents the occurrence of preferential corrosion. A channel forming component for a vehicular heat exchanger is also provided by utilizing the aluminum alloy brazing sheet. An aluminum alloy brazing sheet having high corrosion resistance includes an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, wherein the filler material, the sacrificial anode material, and the core have respective predetermined alloy compositions. A channel forming component for a vehicular heat exchanger is manufactured using the aluminum alloy brazing sheet having high corrosion resistance.Type: GrantFiled: January 28, 2013Date of Patent: October 16, 2018Assignees: Denso Corporation, UACJ CorporationInventors: Sadayuki Kamiya, Shota Terachi, Kenji Negura, Makoto Ando, Atsushi Fukumoto, Yoshiyuki Oya, Akio Niikura
