Patents by Inventor Toshiki Ueda
Toshiki Ueda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10307869Abstract: The present invention provides an aluminum alloy brazing sheet for electric resistance welding, which has high strength while being thinned and can reduce the occurrence of welding defects in the electric resistance welding. Disclosed is an aluminum alloy brazing sheet for electric resistance welding, including a core layer and a brazing filler layer cladded on at least one surface of the core layer, wherein the brazing filler layer is made of an aluminum alloy comprising Si: 5.5 to 12.0% by mass, and at least one of Na: 0.0003 to 0.0030% by mass and Sr: 0.0020 to 0.1000% by mass, with the balance being Al and inevitable impurities, wherein the brazing filler layer in a molten state at 650° C. exhibits a viscosity of 0.01 Pa·s or less.Type: GrantFiled: March 27, 2015Date of Patent: June 4, 2019Assignee: Kobe Steel, Ltd.Inventors: Shimpei Kimura, Toshiki Ueda, Takahiro Izumi, Yuji Shibuya
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Patent number: 10213881Abstract: A brazing sheet includes a core material containing an aluminum alloy including magnesium, a bonding material laminated on at least one side of the core material, and a flux layer. The flux layer is laminated on one side of the bonding material and includes a flux composition. The flux composition includes [A] a flux component containing KAlF4, and [B] AlF3. A substance mass S1 (mol) of magnesium in the bonding material when heated at 585° C., a substance mass S2 (mol) of [A] the flux component containing KAlF4 in the flux layer and a substance mass S3 (mol) of [B] AlF3 satisfy the specific expression.Type: GrantFiled: April 16, 2014Date of Patent: February 26, 2019Assignee: Kobe Steel, Ltd.Inventors: Nobuhiro Kobayashi, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
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Publication number: 20180347922Abstract: Disclosed is an aluminum composite material including an aluminum alloy material containing magnesium, and a bonding material formed by brazing using a flux, the bonding material being adapted to bond the aluminum alloy material thereto. In the aluminum composite material, the bonding material contains a magnesium-containing compound other than KMgF3 and MgF2. The present invention provides an aluminum composite material with satisfactory brazeability to an aluminum alloy material containing magnesium, a heat exchanger including the aluminum composite material, and a flux suitable for use in braze.Type: ApplicationFiled: August 8, 2018Publication date: December 6, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro KOBAYASHI, Motohiro HORIGUCHi, Koichi SAKAMOTO, Toshiki UEDA, Shimpei KIMURA, Takahiro IZUMi
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Publication number: 20180339374Abstract: This brazing flux composition for an aluminum alloy is characterized by containing [A] a flux component containing KAlF4 and [B] a fluoride that does not contain K and that contains elements other than group 1 elements and group 2 elements: being in a particle form of single component of [B] the fluoride; and the added amount (C) (mass %) of [B] the fluoride with respect to [A] the flux component and the average particle size (d) (?m) satisfying formula (1), 0.83C?0.19d<43??(1).Type: ApplicationFiled: August 3, 2018Publication date: November 29, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel. Ltd.)Inventors: Nobuhiro KOBAYASHI, Satoshi YOSHIDA, Toshiki UEDA, Shimpei KIMURA, Takahiro IZUMI
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Patent number: 10086480Abstract: Disclosed is a flux composition for use in brazing of an aluminum alloy material and includes a flux component [A] containing KAlF4; and a fluoride [B] containing an element other than Group 1 elements and Group 2 elements and containing no potassium (K). Also disclosed is a brazing sheet which includes an aluminum alloy core; a filler material lying on or over at least one side of the core; and a flux layer lying on or over one side of the filler material and including the flux composition.Type: GrantFiled: October 17, 2012Date of Patent: October 2, 2018Assignees: Kobe Steel, Ltd., DENSO CORPORATIONInventors: Nobuhiro Kobayashi, Motohiro Horiguchi, Koichi Sakamoto, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
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Publication number: 20180214990Abstract: The present invention provides an aluminum alloy brazing sheet for electric resistance welding, which has high strength while being thinned and can reduce the occurrence of welding defects in the electric resistance welding. Disclosed is an aluminum alloy brazing sheet for electric resistance welding, including a core layer and a brazing filler layer cladded on at least one surface of the core layer, wherein the brazing filler layer is made of an aluminum alloy comprising Si: 5.5 to 12.0% by mass, and at least one of Na: 0.0003 to 0.0030% by mass and Sr: 0.0020 to 0.1000% by mass, with the balance being Al and inevitable impurities, wherein the brazing filler layer in a molten state at 650° C. exhibits a viscosity of 0.01 Pa·s or less.Type: ApplicationFiled: March 27, 2015Publication date: August 2, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Shimpei KIMURA, Toshiki UEDA, Takahiro IZUMI, Yuji SHIBUYA
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Patent number: 9751143Abstract: An aluminum alloy brazing sheet for heat exchangers has a core, a sacrificial material formed on one side of the core, and a brazing filler metal formed on the other side of the core. The core is made of an aluminum alloy containing Si, Cu, Mn, and Al. The sacrificial material is made of an aluminum alloy containing Si, Zn, Mg, and Al. The brazing filler metal is made of an aluminum alloy. The aluminum alloy brazing sheet for heat exchangers has a work hardening exponent n of not less than 0.05. The core has an average crystal grain size of not more than 10 ?m in a cross-section. The aluminum alloy brazing sheet for heat exchangers has excellent strength and corrosion resistance even when it is formed into a thin material and also has excellent high frequency weldability and weld cracking resistance during electric resistance welding.Type: GrantFiled: March 12, 2013Date of Patent: September 5, 2017Assignees: KOBE STEEL, LTD., DENSO CORPORATIONInventors: Shimpei Kimura, Toshiki Ueda, Takahiro Izumi, Haruyuki Konishi, Hayaki Teramoto, Osamu Hakamata, Michiyasu Yamamoto
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Publication number: 20160074972Abstract: A brazing sheet includes a core material containing an aluminum alloy including magnesium, a bonding material laminated on at least one side of the core material, and a flux layer. The flux layer is laminated on one side of the bonding material and includes a flux composition. The flux composition includes [A] a flux component containing KAlF4, and [B] AlF3. A substance mass S1 (mol) of magnesium in the bonding material when heated at 585° C., a substance mass S2 (mol) of [A] the flux component containing KAlF4 in the flux layer and a substance mass S3 (mol) of [B] AlF3 satisfy the specific expression.Type: ApplicationFiled: April 16, 2014Publication date: March 17, 2016Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Nobuhiro KOBAYASHI, Toshiki UEDA, Shimpei KIMURA, Takahiro IZUMI
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Publication number: 20160059362Abstract: This brazing flux composition for an aluminum alloy is characterized by containing [A] a flux component containing KAlF4 and [B] a fluoride that does not contain K and that contains elements other than group 1 elements and group 2 elements: being in a particle form of single component of [B] the fluoride; and the added amount (C) (mass %) of [B] the fluoride with respect to [A] the flux component and the average particle size (d) (?m) satisfying formula (1), 0.83C?0.19d<43??(1).Type: ApplicationFiled: April 16, 2014Publication date: March 3, 2016Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro KOBAYASHI, Satoshi YOSHIDA, Toshiki UEDA, Shimpei KIMURA, Takahiro IZUMI
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Patent number: 9138833Abstract: Disclosed is an aluminum alloy brazing sheet for heat exchanger which excels in resistance to corrosion from its inside and simultaneously attains satisfactory erosion resistance and high strength. This includes a core material of an Al alloy containing predetermined amounts of Si, Mn, Cu, Mg, and Ti; a clad material of an Al alloy containing predetermined amounts of Si, Mn, and Zn, having a predetermined thickness, and lying on one side of the core material so as to constitute an inner side of a tube member of the heat exchanger; and a filler material of an Al alloy containing a predetermined amount of Si, having a predetermined thickness, and lying on the other side of the core material so as to constitute an outer side of the tube member. The crystal grain size of the core material after brazing under specific conditions is 50 ?m or more but less than 300 ?m in a rolling direction.Type: GrantFiled: March 11, 2008Date of Patent: September 22, 2015Assignee: Kobe Steel, Ltd.Inventors: Fumihiro Koshigoe, Toshiki Ueda, Shimpei Kimura
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Publication number: 20150211816Abstract: Disclosed is an aluminum composite material including an aluminum alloy material containing magnesium, and a bonding material formed by brazing using a flux, the bonding material being adapted to bond the aluminum alloy material thereto. In the aluminum composite material, the bonding material contains a magnesium-containing compound other than KMgF3 and MgF2. The present invention provides an aluminum composite material with satisfactory brazeability to an aluminum alloy material containing magnesium, a heat exchanger including the aluminum composite material, and a flux suitable for use in braze.Type: ApplicationFiled: August 14, 2013Publication date: July 30, 2015Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro Kobayashi, Motohiro Horiguchi, Koichi Sakamoto, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
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Publication number: 20150047745Abstract: Disclosed is a flux composition for use in brazing of an aluminum alloy material and includes a flux component [A] containing KAlF4; and a fluoride [B] containing an element other than Group 1 elements and Group 2 elements and containing no potassium (K). Also disclosed is a brazing sheet which includes an aluminum alloy core; a filler material lying on or over at least one side of the core; and a flux layer lying on or over one side of the filler material and including the flux composition.Type: ApplicationFiled: October 17, 2012Publication date: February 19, 2015Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro Kobayashi, Motohiro Horiguchi, Koichi Sakamoto, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
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Publication number: 20130260175Abstract: An aluminum alloy brazing sheet for heat exchangers has a core, a sacrificial material formed on one side of the core, and a brazing filler metal formed on the other side of the core. The core is made of an aluminum alloy containing Si, Cu, Mn, and Al. The sacrificial material is made of an aluminum alloy containing Si, Zn, Mg, and Al. The brazing filler metal is made of an aluminum alloy. The aluminum alloy brazing sheet for heat exchangers has a work hardening exponent n of not less than 0.05. The core has an average crystal grain size of not more than 10 ?m in a cross-section. The aluminum alloy brazing sheet for heat exchangers has excellent strength and corrosion resistance even when it is formed into a thin material and also has excellent high frequency weldability and weld cracking resistance during electric resistance welding.Type: ApplicationFiled: March 12, 2013Publication date: October 3, 2013Applicants: DENSO CORPORATION, KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Shimpei KIMURA, Toshiki Ueda, Takahiro Izumi, Haruyuki Konishi, Hayaki Teramoto, Osamu Hakamata, Michiyasu Yamamoto
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Patent number: 8524377Abstract: An aluminum alloy clad sheet for heat exchangers includes a core layer, a sacrificial layer disposed on one side of the core layer, and a brazing layer of an Al—Si alloy disposed on the other side of the core layer, wherein the core layer contains Si: 0.15% to 1.6% by mass, Mn: 0.3% to 2.0% by mass, Cu: 0.1% to 1.0% by mass, Ti: 0.02% to 0.30% by mass, and the remainder of Al and incidental impurities, and the sacrificial layer contains Zn: 4.0% to 10.0% by mass, Cr: 0.01% to 0.5% by mass, and the remainder of Al and incidental impurities.Type: GrantFiled: January 19, 2010Date of Patent: September 3, 2013Assignee: Kobe Steel, Ltd.Inventors: Nobuhiro Kobayashi, Shinji Sakashita, Toshiki Ueda
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Patent number: 8501327Abstract: An aluminum alloy clad sheet for heat exchangers includes a core layer, a sacrificial layer disposed on one side of the core layer, and a brazing layer of an Al—Si alloy disposed on the other side of the core layer, wherein the core layer contains Si: 0.15% to 1.6% by mass, Mn: 0.3% to 2.0% by mass, Cu: 0.1% to 1.0% by mass, Ti: 0.02% to 0.30% by mass, and the remainder of Al and incidental impurities, and the sacrificial layer contains Zn: 4.0% to 10.0% by mass, Cr: 0.01% to 0.5% by mass, and the remainder of Al and incidental impurities.Type: GrantFiled: May 24, 2012Date of Patent: August 6, 2013Assignee: Kobe Steel, Ltd.Inventors: Nobuhiro Kobayashi, Shinji Sakashita, Toshiki Ueda
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Patent number: 8404360Abstract: Provided are a side member from which a clad member for heat exchanger exhibiting excellent productivity and corrosion resistance while preventing poor adhesion can be produced in production of a clad member for heat exchanger by controlling the surface state and flatness, a method for producing the side member, and a method for producing a clad member for a heat exchanger by using the side member. A side member (A) consists of a core material and one or more layers of side member (A) applied onto one side or both sides thereof and being used in a clad member for a heat exchanger, wherein a plurality of periodic forms (B) of fine groove which become arcuate toward one direction of the side member (A) is formed on the surface of the side member (A).Type: GrantFiled: March 25, 2009Date of Patent: March 26, 2013Assignee: Kobe Steel, Ltd.Inventors: Toshiki Ueda, Kenji Tokuda, Yasuhiro Nishioka, Jitsuto Shikata, Hiroshi Kunii, Hideaki Hakuya
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Publication number: 20130059162Abstract: Disclosed are: a flux composition which is used for brazing of a magnesium-containing aluminum alloy material, suppresses the formation of high-melting compounds, provides better wettability, and thereby exhibits better brazability even applied in a small mass of coating; and a brazing sheet using the flux composition. The flux composition for brazing of a magnesium-containing aluminum alloy material includes a flux component [A] containing fluorides as principal components; and an additive [B] being at least one selected from the group consisting of CeF3, BaF2, and ZnSO4. The flux component [A] preferably contains KF in a content of 40 percent by mass or more and 60 percent by mass or less; and AlF3 in a content of 40 percent by mass or more and 60 percent by mass or less.Type: ApplicationFiled: August 24, 2012Publication date: March 7, 2013Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro KOBAYASHI, Motohiro Horiguchi, Kazutaka Kunii, Toshiki Ueda, Shimpei Kimura
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Patent number: 8381797Abstract: Skin material of a clad material is composed of one or more layers, each layer of the skin materials is made of a metal different from the core material in their component compositions, and at least one layer of the skin material has a cast microstructure, when the skin material is superposed on either of one or both faces of the core material.Type: GrantFiled: June 15, 2011Date of Patent: February 26, 2013Assignee: Kobe Steel, Ltd.Inventors: Masayuki Takada, Yasuhiro Nishioka, Tomohiro Nishimura, Kenji Tokuda, Toshiki Ueda, Makoto Morishita, Takashi Inaba, Akihiro Tsuruno, Yoshinori Kato, Fumihiro Koshigoe, Masaki Tanigawa, Naoki Sakashita, Kenji Harada, Jitsuto Shikata, Masanori Ikeda
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Patent number: 8343635Abstract: Provided is a multi-layered sheet which has undergone heating corresponding to brazing, such as an aluminum-alloy radiator tube, or a multi-layered sheet such as an aluminum-alloy brazing sheet. The multi-layered sheet can have a reduced thickness and has excellent fatigue properties. The multi-layered sheet of aluminum alloys comprises a core layer (2) which has been clad at least with a sacrificial layer (3). This multi-layered sheet is a multi-layered sheet to be subjected to brazing or welding to produce a heat exchanger or is a multi-layered sheet which has undergone heating corresponding to brazing. The core layer (2) comprises a specific 3000-series composition. In this core layer (2), the average density in number of dispersed particles having a specific size has been regulated. As a result, fatigue properties, which govern cracking, can be highly improved.Type: GrantFiled: February 5, 2009Date of Patent: January 1, 2013Assignee: Kobe Steel, Ltd.Inventors: Katsushi Matsumoto, Eiichi Tamura, Masao Kinefuchi, Toshiki Ueda, Fumihiro Koshigoe, Shimpei Kimura
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Patent number: 8283049Abstract: An aluminum brazing sheet has a core material made of an aluminum alloy and a cladding material cladded on at least one side of the core material and made of an aluminum alloy having a potential lower than that of the core material. The cladding material is made of an aluminum alloy consisting essentially of 0.4 to 0.7 mass % of Mg, 0.5 to 1.5 mass % of Si, and 0.4 to 1.2 mass % of Mn, the remainder being Al and unavoidable impurities. Zn in the amount of 6 mass % or less is added in accordance with need. An aluminum brazing sheet having not only high strength but also less pressure adhesion failure and excellent productivity can be obtained.Type: GrantFiled: September 26, 2003Date of Patent: October 9, 2012Assignee: Kobe Steel, Ltd.Inventors: Susumu Saisho, Toshiki Ueda, Fumihiro Sato