Patents by Inventor Michihide Yoshino
Michihide Yoshino 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).
-
Patent number: 11806816Abstract: An aluminum brazing sheet for flux-free brazing having a multilayer structure of two or more layers including at least one core material layer and one brazing material layer, wherein the brazing material layer is positioned on one or both sides of the core material layer and on an outermost surface of the brazing sheet. The brazing material layer is made of an Al—Si—Mg—X brazing material containing: in mass%, 0.05 to 2.0% of Mg, and 2.0 to 14.0% of Si, and further containing one or more of 0.01 to 0.3% of Bi, Ga, Sn, In and Pb, a total amount of Bi, Ga, Sn, In and Pb being 0.5% or less. X indicates one or more of Bi, Ga, Sn, In and Pb.Type: GrantFiled: February 15, 2021Date of Patent: November 7, 2023Assignee: MA Aluminum CorporationInventors: Michihide Yoshino, Hideyuki Miyake, Hajime Chiba
-
Patent number: 11759893Abstract: An aluminum alloy for flux-free brazing provided for brazing performed via an Al—Si-based brazing material without a flux in a non-oxidizing atmosphere without depressurization, includes: by mass %, 0.01% to 2.0% of Mg; and 0.005% to 1.5% of Bi, wherein in the aluminum alloy, there are more than 10 Mg—Bi-based compounds having a diameter of 0.01 ?m or more and less than 5.0 ?m in terms of equivalent circle diameter per 10,000-?m2 visual field and there are less than 2 Mg—Bi-based compounds having a diameter of 5.0 ?m or more per 10,000-?m2 visual field in a cross section parallel to a rolling direction, and in the aluminum alloy, there are less than 5 Bi particles having a diameter of 5.0 ?m or more in terms of equivalent circle diameter per 10,000-?m2 visual field in the cross section parallel to the rolling direction.Type: GrantFiled: September 25, 2019Date of Patent: September 19, 2023Assignee: MA Aluminum CorporationInventors: Yoshiki Mori, Hideyuki Miyake, Michihide Yoshino, Shohei Iwao, Masakazu Edo
-
Patent number: 11697180Abstract: An aluminum alloy brazing sheet may include a sacrificial material having a function of a brazing material on at least one surface of a core material, wherein the sacrificial material has a composition containing: in a mass %, 2% to 5% of Si; 3% to 5% of Zn; and an Al balance with inevitable impurities the core material is made of an Al—Mn-based alloy, an in the core material before brazing, Al—Mn based secondary particles having an equivalent circle diameter of 100 to 400 nm are distributed with a number density of 0.3 to 5 particles/?m2.Type: GrantFiled: August 19, 2019Date of Patent: July 11, 2023Assignee: MA ALUMINUM CORPORATIONInventors: Shun Maruno, Michihide Yoshino, Shohei Iwao
-
Publication number: 20230193431Abstract: The aluminum alloy clad material includes a core material and sacrificial materials disposed on both surfaces of the core material, the composition of the core material contains, by mass %, Mn: 0.7% to 1.8%, Si: 0.3% to 1.3%, Fe: 0.05% to 0.7% and Zn: 0.5% to 3.0% with a remainder consisting of Al and inevitable impurities, the composition of the sacrificial material contains, by mass %, Mn: 0.005% to 0.7%, Fe: 0.05% to 0.3% and Zn: 1.0% to 4.0% with a remainder consisting of Al and inevitable impurities, an amount of Zn in the sacrificial material is larger than an amount of Zn in the core material by 0.2% or more, and the potential of the core material after a brazing heat treatment is within a range of ?700 to ?870 mV.Type: ApplicationFiled: June 21, 2021Publication date: June 22, 2023Applicants: MA Aluminum Corporation, DENSO CORPORATIONInventors: Yoshiki MORI, Michihide YOSHINO, Masakazu EDO, Shohei IWAO, Hideyuki MIYAKE, Yousuke UCHIDA, Nobuhiro HONMA, Shogo YAMADA
-
Publication number: 20230125002Abstract: An aluminum brazing sheet for flux-free brazing having a multilayer structure of two or more layers including at least one core material layer and one brazing material layer, wherein the brazing material layer is positioned on one or both sides of the core material layer and on an outermost surface of the brazing sheet. The brazing material layer is made of an Al—Si—Mg—X brazing material containing: in mass%, 0.05 to 2.0% of Mg, and 2.0 to 14.0% of Si, and further containing one or more of 0.01 to 0.3% of Bi, Ga, Sn, In and Pb, a total amount of Bi, Ga, Sn, In and Pb being 0.5% or less. X indicates one or more of Bi, Ga, Sn, In and Pb.Type: ApplicationFiled: February 15, 2021Publication date: April 20, 2023Applicant: MA Aluminum CorporationInventors: Michihide YOSHINO, Hideyuki MIYAKE, Hajime CHIBA
-
Publication number: 20220072665Abstract: An aluminum brazing sheet has a multilayer structure of two or more layers of at least a core material and a brazing material, wherein an Al—Si—Mg—Bi-based brazing material containing, by mass %, 0.01% to 2.0% of Mg, 1.5% to 14.0% of Si, and 0.005% to 1.5% of Bi is clad on one surface or both surfaces of the core material to be located at an outermost surface of the aluminum brazing sheet, in the Al—Si—Mg—Bi based brazing material, there are more than 10 Mg—Bi-based compounds having a diameter of 0.01 ?m or more and less than 5.0 ?m when observed in a surface layer plane direction and there are less than 2 Mg—Bi-based compounds having a diameter of 5.0 ?m or more, and in the brazing material, there are less than 5 Bi particles having a diameter of 5.0 ?m or more when observed in the surface layer plane direction.Type: ApplicationFiled: September 25, 2019Publication date: March 10, 2022Applicant: Mitsubishi Aluminum Co., Ltd.Inventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO
-
Publication number: 20220063024Abstract: An aluminum alloy for flux-free brazing provided for brazing performed via an Al-Si-based brazing material without a flux in a non-oxidizing atmosphere without depressurization, includes: by mass %, 0.01% to 2.0% of Mg; and 0.005% to 1.5% of Bi, wherein in the aluminum alloy, there are more than 10 Mg-Bi-based compounds having a diameter of 0.01 ?m or more and less than 5.0 ?m in terms of equivalent circle diameter per 10,000-?m2 visual field and there are less than 2 Mg-Bi-based compounds having a diameter of 5.0 ?m or more per 10,000-?m2 visual field in a cross section parallel to a rolling direction, and in the aluminum alloy, there are less than 5 Bi particles having a diameter of 5.0 ?m or more in terms of equivalent circle diameter per 10,000-?m2 visual field in the cross section parallel to the rolling direction.Type: ApplicationFiled: September 25, 2019Publication date: March 3, 2022Applicant: Mitsubishi Aluminum Co., Ltd.Inventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO
-
Publication number: 20210346992Abstract: An aluminum alloy brazing sheet may include a sacrificial material having a function of a brazing material on at least one surface of a core material, wherein the sacrificial material has a composition containing: in a mass %, 2% to 5% of Si; 3% to 5% of Zn; and an Al balance with inevitable impurities the core material is made of an Al—Mn-based alloy, an in the core material before brazing, Al—Mn based secondary particles having an equivalent circle diameter of 100 to 400 nm are distributed with a number density of 0.3 to 5 particles/?m2.Type: ApplicationFiled: August 19, 2019Publication date: November 11, 2021Applicant: Mitsubishi Aluminum Co., Ltd.Inventors: Shun MARUNO, Michihide YOSHINO, Shohei IWAO
-
Patent number: 11045911Abstract: A sacrificial material on one surface of a core material, a Al brazing material containing Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and Al balance and satisfying (Bi+Mg)×Sr?0.1 is disposed on the other surface, Mg—Bi-based compounds of the brazing material with a diameter of 0.1-5.0 ?m are more than 20 per 10,000-?m2 and the Mg—Bi-based compounds with a diameter of 5.0 ?m or more are less than 2 before brazing, the core material contains Mn: 1.0% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, Mg: 0.1% to 0.7%, and Al balance, the sacrificial material contains Zn: 0.5% to 6.0% and Mg of which a content is limited to 0.1% or less, and a Mg concentration on a surface of the sacrificial material after brazing is 0.15% or less.Type: GrantFiled: July 1, 2020Date of Patent: June 29, 2021Assignees: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki Mori, Hideyuki Miyake, Michihide Yoshino, Shohei Iwao, Masakazu Edo, Naoki Sugimoto, Nobuhiro Honma, Shogo Yamada, Hayaki Teramoto, Taketoshi Toyama
-
Patent number: 11027373Abstract: An aluminum alloy clad material includes: a sacrificial material on one surface of a core material; and an Al—Si—Mg—Bi-based brazing material disposed on other surface of the core material, contains, by mass %, Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and a balance consisting of Al and inevitable impurities, and satisfies a relationship of (Bi+Mg)×Sr?0.1 by mass %, in which Mg—Bi-based compounds contained in the Al—Si—Mg—Bi-based brazing material with a diameter of 0.1 ?m or more and less than 5.0 ?m are more than 20 in number per 10,000-?m2 and the Mg—Bi-based compounds with a diameter of 5.0 ?m or more are less than 2 in number, and the core material contains Mn: 0.9% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, and a balance consisting of Al and inevitable impurities.Type: GrantFiled: June 30, 2020Date of Patent: June 8, 2021Assignees: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki Mori, Hideyuki Miyake, Michihide Yoshino, Shohei Iwao, Masakazu Edo, Naoki Sugimoto, Nobuhiro Honma, Shogo Yamada, Hayaki Teramoto, Taketoshi Toyama
-
Patent number: 11020824Abstract: An Al—Si—Mg—Bi-based brazing material containing Si: 6.0% to 14.0%, Fe: 0.05% to 0.3%, Mg: 0.02% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and a balance of Al and inevitable impurities, and satisfies (Bi+Mg)×Sr?0.1, is disposed on both surfaces of a core material, Mg—Bi-based compounds of the brazing material with a diameter of 0.1 ?m or more and less than 5.0 ?m in terms of equivalent circle diameter are more than 20 in number in 10,000 ?m2 and the Mg—Bi-based compounds with diameter of 5.0 ?m or more are less than 2 in number in 10,000 ?m2, the core material contains Mn: 0.8% to 1.8%, Si: 0.01% to 1.0%, Fe: 0.1% to 0.5%, and a balance of Al and inevitable impurities, and a cathode current density of a brazing material layer after a brazing heat treatment is 0.1 mA/cm2 or less.Type: GrantFiled: June 30, 2020Date of Patent: June 1, 2021Assignees: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki Mori, Hideyuki Miyake, Michihide Yoshino, Shohei Iwao, Masakazu Edo, Naoki Sugimoto, Nobuhiro Honma, Shogo Yamada, Hayaki Teramoto, Taketoshi Toyama
-
Publication number: 20210001434Abstract: An aluminum alloy clad material includes: a sacrificial material on one surface of a core material; and an Al—Si—Mg—Bi-based brazing material disposed on other surface of the core material, contains, by mass %, Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and a balance consisting of Al and inevitable impurities, and satisfies a relationship of (Bi+Mg)×Sr?0.1 by mass %, in which Mg—Bi-based compounds contained in the Al—Si—Mg—Bi-based brazing material with a diameter of 0.1 ?m or more and less than 5.0 ?m are more than 20 in number per 10,000-?m2 and the Mg—Bi-based compounds with a diameter of 5.0 ?m or more are less than 2 in number, and the core material contains Mn: 0.9% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, and a balance consisting of Al and inevitable impurities.Type: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Applicants: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO, Naoki SUGIMOTO, Nobuhiro HONMA, Shogo YAMADA, Hayaki TERAMOTO, Taketoshi TOYAMA
-
Publication number: 20210001436Abstract: An aluminum alloy clad material having four layers includes: a sacrificial material on one surface of a core material; and an Al—Si—Mg—Bi-based brazing material which clads the other surface thereof on one surface of the sacrificial material on an opposite side to the core material, the brazing material containing Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and Al balance, and satisfying (Bi+Mg)×Sr?0.1, Mg—Bi-based compounds contained in the brazing material with a diameter of 0.1-5.0 ?m are more than 20 in number per 10,000-?m2 and the Mg—Bi-based compounds with a diameter of 5.0 ?m or more are less than 2 before brazing, and the core material contains Mn: 1.0% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.1% to 0.7%, and a balance consisting of Al and inevitable impurities.Type: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Applicants: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO, Naoki SUGIMOTO, Nobuhiro HONMA, Shogo YAMADA, Hayaki TERAMOTO, Taketoshi TOYAMA
-
Publication number: 20210001437Abstract: A sacrificial material on one surface of a core material, a Al brazing material containing Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and Al balance and satisfying (Bi+Mg)×Sr?0.1 is disposed on the other surface, Mg-Bi-based compounds of the brazing material with a diameter of 0.1-5.0 ?m are more than 20 per 10,000-?m2 and the Mg-Bi-based compounds with a diameter of 5.0 ?m or more are less than 2 before brazing, the core material contains Mn: 1.0% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, Mg: 0.1% to 0.7%, and Al balance, the sacrificial material contains Zn: 0.5% to 6.0% and Mg of which a content is limited to 0.1% or less, and a Mg concentration on a surface of the sacrificial material after brazing is 0.15% or less.Type: ApplicationFiled: July 1, 2020Publication date: January 7, 2021Applicants: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO, Naoki SUGIMOTO, Nobuhiro HONMA, Shogo YAMADA, Hayaki TERAMOTO, Taketoshi TOYAMA
-
Publication number: 20210001435Abstract: An Al—Si—Mg—Bi-based brazing material containing Si: 6.0% to 14.0%, Fe: 0.05% to 0.3%, Mg: 0.02% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and a balance of Al and inevitable impurities, and satisfies (Bi+Mg)×Sr?0.1, is disposed on both surfaces of a core material, Mg—Bi-based compounds of the brazing material with a diameter of 0.1 ?m or more and less than 5.0 ?m in terms of equivalent circle diameter are more than 20 in number in 10,000 ?m2 and the Mg—Bi-based compounds with diameter of 5.0 ?m or more are less than 2 in number in 10,000 ?m2, the core material contains Mn: 0.8% to 1.8%, Si: 0.01% to 1.0%, Fe: 0.1% to 0.5%, and a balance of Al and inevitable impurities, and a cathode current density of a brazing material layer after a brazing heat treatment is 0.1 mA/cm2 or less.Type: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Applicants: Mitsubishi Aluminum Co., Ltd., DENSO CORPORATIONInventors: Yoshiki MORI, Hideyuki MIYAKE, Michihide YOSHINO, Shohei IWAO, Masakazu EDO, Naoki SUGIMOTO, Nobuhiro HONMA, Shogo YAMADA, Hayaki Teramoto, Taketoshi Toyama
-
Publication number: 20200115778Abstract: An aluminum alloy fin material and a heat exchanger having excellent moldability, strength, resistance to brazing erosion and durability are provided. The aluminum alloy fin material has a composition comprising, in % by mass, Zr: 0.05 to 0.3%, Mn: 1.8 to 2.5%, Si: 0.7 to 1.3%, Fe: 0.05 to 0.5%, Cu: 0.25 to 0.7%, Zn: 2.0 to 5.0%, with the balance being Al and inevitable impurities, wherein a ratio of Mn/Si in terms of content is in a range of 1.5 to 2.9, and the aluminum alloy fin material has a tensile strength before brazing of 210 to 280 MPa, a tensile strength after brazing of 175 MPa or more, an electrical conductivity after brazing of 37% IACS or more, and a solidus temperature of 605° C. or more, and has a crystal grain structure before brazing of a non-recrystallized grain structure, and has an average crystal grain size in a rolled surface after brazing of 300 ?m to 2,000 ?m.Type: ApplicationFiled: October 15, 2019Publication date: April 16, 2020Applicants: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATIONInventors: Michihide YOSHINO, Shohei IWAO, Tetsuya YAMAMOTO, Takahiro SHINODA, Koichi NAKASHITA
-
Publication number: 20200115779Abstract: An aluminum alloy fin material and a heat exchanger having excellent moldability, strength, resistance to brazing erosion and durability are provided. The aluminum alloy fin material has a composition comprising Mn: 1.8 to 2.5%, Si: 0.7 to 1.3%, Fe: 0.05 to 0.3%, Cu: 0.14 to 0.30%, Zn: 1.3 to 3.0%, with the balance being Al and inevitable impurities, wherein a ratio Mn/Si in terms of content is in a range of 1.5 to 2.9, and the aluminum alloy fin material has a solidus temperature of 610° C. or more, a tensile strength before brazing of 220 to 270 MPa, has a crystal grain structure before brazing of a non-recrystallized grain structure, and has a tensile strength after brazing of 160 MPa or more, an electrical conductivity after brazing of 40% IACS or more and an average crystal grain size in a rolled surface after brazing of 300 ?m to 2,000 ?m.Type: ApplicationFiled: October 15, 2019Publication date: April 16, 2020Applicants: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATIONInventors: Michihide YOSHINO, Shohei IWAO, Tetsuya YAMAMOTO, Takahiro SHINODA, Koichi NAKASHITA
-
Patent number: 10518363Abstract: An aluminum alloy brazing sheet has high strength, corrosion resistance and elongation, and includes an aluminum alloy clad material. The material includes a core material, one surface of which is clad with a sacrificial material and an other surface of which is clad with an Al—Si-based or Al—Si—Zn-based brazing filler metal. The core material has a composition containing 1.3 to 2.0% Mn, 0.6 to 1.3% Si, 0.1 to 0.5% Fe and 0.7 to 1.3% Cu, by mass, with the balance Al and impurities. The sacrificial material has a composition containing more than 4.0% to 8.0% Zn, 0.7 to 2.0% Mn, 0.3 to 1.0% Si, 0.3 to 1.0% Fe and 0.05 to 0.3% Ti, by mass, with the balance Al and impurities. At least the core material has a lamellar crystal grain structure. Elongation of material is at least 4% and a tensile strength after brazing is at least 170 MPa.Type: GrantFiled: November 9, 2015Date of Patent: December 31, 2019Assignee: MITSUBISHI ALUMINUM CO., LTD.Inventors: Michihide Yoshino, Masakazu Edo
-
Patent number: 10378088Abstract: [Problem] There is provided an aluminum alloy fin material with high strength, superior brazability and superior corrosion resistance. [Solving means] An aluminum alloy fin material has a composition, in % by mass, of the following: Zr: 0.05 to 0.25%, Mn: 1.3 to 1.8%, Si: 0.7 to 1.3%, Fe: 0.10 to 0.35%, and Zn: 1.2 to 3.0%, the remainder being Al and inevitable impurities. The aluminum alloy fin material has a solidus temperature of 615° C. or higher, a tensile strength after brazing of 135 MPa or higher, a pitting potential after brazing in the range of ?900 to ?780 mV, and an average crystal grain diameter in a rolled surface after brazing in the range of 200 ?m to 1,000 ?m.Type: GrantFiled: December 14, 2015Date of Patent: August 13, 2019Assignee: MITSUBISHI ALUMINUM CO., LTD.Inventors: Michihide Yoshino, Masakazu Edo
-
Publication number: 20170349980Abstract: An aluminum alloy fin material has a composition, in % by mass, of the following: Zr: 0.05 to 0.25%, Mn: 1.3 to 1.8%, Si: 0.7 to 1.3%, Fe: 0.10 to 0.35%, and Zn: 1.2 to 3.0%, the remainder being Al and inevitable impurities. The aluminum alloy fin material has a solidus temperature of 615° C. or higher, a tensile strength after brazing of 135 MPa or higher, a pitting potential after brazing in the range of ?900 to ?780 mV, and an average crystal grain diameter in a rolled surface after brazing in the range of 200 ?m to 1,000 ?m.Type: ApplicationFiled: December 14, 2015Publication date: December 7, 2017Applicant: MITSUBISHI ALUMINUM CO., LTD.Inventors: Michihide YOSHINO, Masakazu EDO