公开(公告)号：US20230158613A1

公开(公告)日：2023-05-25

申请号：US17905423

申请日：2021-03-22

Applicant: UACJ Corporation

Inventor： Yutaka YANAGAWA ,  Tomoki YAMAYOSHI ,  Tatsuya IDE ,  Taichi SUZUKI

IPC: B23K35/28 ,  B23K35/02 ,  C22C21/02 ,  C22F1/043 ,  C22F1/05 ,  B32B15/01 ,  C23F1/20

CPC classification number: B23K35/286 ,  B23K35/0238 ,  C22C21/02 ,  C22F1/043 ,  C22F1/05 ,  B32B15/016 ,  C23F1/20 ,  B23K2103/10

Abstract: A brazing-sheet manufacturing method includes superposing a core-material slab on or adjacent to at least one surface of a filler-material slab to form a clad slab, the core-material slab being composed of an aluminum material and the filler-material slab being composed of an Al—Si—Mg series alloy. Then, the clad slab is hot rolled to form a clad sheet having a core material layer composed of the aluminum material of the core-material slab and a filler material layer composed of the Al—Si—Mg series alloy of the filler-material slab. Then, the clad sheet is subjected to one or more passes of cold rolling. Either between cold-rolling passes or after the completion of the cold rolling, a surface of the clad sheet is etched using a liquid etchant that includes one or more inorganic acids. The liquid etchant does not contain fluorine atoms.

公开(公告)号：US20200370847A1

公开(公告)日：2020-11-26

申请号：US16988903

申请日：2020-08-10

Applicant: UACJ Corporation

Inventor： Yutaka YANAGAWA ,  Norihisa ISOMURA ,  Yuki TOTANI ,  Yasuhiro YAGITA ,  Tetsuro HATA

IPC: F28F21/08 ,  B23K35/36 ,  B32B15/01 ,  B23K35/00 ,  B23K35/02 ,  B23K1/19 ,  B23K1/00 ,  B23K1/20 ,  B23K35/28 ,  B23K1/008 ,  B23K35/38 ,  F28F3/06

Abstract: A method for manufacturing a heat exchanger (1) includes joining an inner fin (3) to a hollow structure (20) formed from at least two clad plates (200a, 200b) by heating and brazing a filler metal layer (B). Each clad plate has a core layer (A) composed of an aluminum alloy that contains Mg: 0.40-1.0 mass %. The filler metal layer is composed of an aluminum alloy that contains Si: 4.0-13.0 mass %, and further contains Li: 0.0040-0.10 mass %, Be: 0.0040-0.10 mass %, and/or Bi: 0.01-0.30 mass %. The inner fin is composed of an aluminum alloy that contains Si: 0.30-0.70 mass % and Mg: 0.35-0.80 mass %. A flux (F) that contains cesium (Cs) is applied along a contact part (201), and the vicinity thereof, of the at least two clad plates prior to the heating. A heat exchanger (1) may be manufactured according to this method.

公开(公告)号：US20180214964A1

公开(公告)日：2018-08-02

申请号：US15747609

申请日：2016-05-18

Applicant: UACJ Corporation

Inventor： Yasunaga ITOH ,  Yutaka YANAGAWA ,  Tomoki YAMAYOSHI ,  Junji NINOMIYA ,  Tsubasa YANAGIMOTO

IPC: B23K1/19 ,  B23K1/20 ,  B23K35/28

CPC classification number: B23K1/19 ,  B23K1/0012 ,  B23K1/20 ,  B23K31/02 ,  B23K35/0222 ,  B23K35/0238 ,  B23K35/286 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/02

Abstract: A brazing method includes shaping a clad sheet to form a hollow structure. A tube is then partially inserted into a through hole in the hollow structure, thereby forming an assembled aluminum structure. The exterior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy that serves as a first filler material. The interior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy containing at least one of Cu and Zn and having a solidus temperature of 570° C. or less that serves as a second filler material. The assembled aluminum structure is brazed by heating it in an inert-gas atmosphere such that fillets joining the hollow structure to the tube along the through hole are formed first on the interior surface of the hollow structure and then on the exterior surface of the hollow structure.

公开(公告)号：US20170282271A1

公开(公告)日：2017-10-05

申请号：US15509303

申请日：2015-07-17

Applicant: UACJ Corporation

Inventor： Yasunaga ITOH ,  Yutaka YANAGAWA ,  Shoichi SAKODA

IPC: B23K1/008 ,  F27D13/00 ,  F27D7/06 ,  B23K1/19 ,  B23K31/02

Abstract: A brazing furnace (1) includes a preheating chamber (2) and a brazing chamber (3). The preheating chamber (2) includes: a vacuum pump (21) for reducing the pressure inside the preheating chamber (2) while a material to be processed (100) is housed therein; a preheating apparatus (22), which preheats the material to be processed (100) in a reduced-pressure atmosphere; and a gas introducing apparatus (23), which introduces inert gas into the preheating chamber (2) to restore the pressure inside the preheating chamber (2) after the preheating. The brazing chamber (3) includes: a gas-replacing apparatus (31), which introduces inert gas into the brazing chamber (3); and a main heating apparatus (32), which heats the material to be processed (100) to a brazing temperature while it is housed in the brazing chamber (3).

公开(公告)号：US20170151637A1

公开(公告)日：2017-06-01

申请号：US15325530

申请日：2015-07-29

Applicant: UACJ Corporation

Inventor： Junichi ICHIKAWA ,  Tomoki YAMAYOSHI ,  Yasunaga ITOH ,  Yutaka YANAGAWA

IPC: B23K35/28 ,  C22C21/06 ,  B23K35/02 ,  C22C21/02 ,  B23K1/00 ,  B23K1/008

Abstract: A brazing sheet for brazing in an inert-gas atmosphere without using a flux has a core and a filler material clad to one side or both sides of the core. The core has a chemical composition that contains Mg: 0.35-0.8% (mass %; likewise hereinbelow), the remainder being composed of Al and unavoidable impurities. The filler material has a chemical composition that contains Si: 6-13% and Bi: 0.001-0.05% and Mg: limited less than 0.05%, the remainder being composed of Al and unavoidable impurities.

公开(公告)号：US20250083205A1

公开(公告)日：2025-03-13

申请号：US18024987

申请日：2021-09-22

Applicant: UACJ Corporation

Inventor： Yutaka YANAGAWA ,  Taichi SUZUKI ,  Tomoki YAMAYOSHI ,  Tatsuya IDE

IPC: B21B1/22 ,  B23K35/02 ,  B23K35/28

Abstract: A method of manufacturing a brazing sheet includes layering at least a core-material slab composed of an aluminum material and a filler-material slab composed of an Al—Si series alloy to prepare a clad slab. At least one aluminum slab in the clad slab, which is disposed in a range from the core-material slab to the filler-material slab inclusive, contains a metal element that oxidizes more readily than Al. The clad slab is hot rolled to prepare a clad sheet that includes a core material composed of the core-material slab and a filler material composed of the filler-material slab. Then, one or more passes of cold rolling is performed on the clad sheet. Between passes of cold rolling or after completion of the cold rolling, at least one surface of the clad sheet is etched using an alkaline etching solution having a sodium hydroxide concentration of 0.05-1.0 mass %.

公开(公告)号：US20170205160A1

公开(公告)日：2017-07-20

申请号：US15385342

申请日：2016-12-20

Applicant: UACJ Corporation

Inventor： Yutaka YANAGAWA ,  Norihisa ISOMURA ,  Yuki TOTANI ,  Yasuhiro YAGITA ,  Tetsuro HATA

IPC: F28F21/08 ,  F28F3/06

CPC classification number: F28F21/084 ,  B23K1/0012 ,  B23K1/008 ,  B23K1/19 ,  B23K1/203 ,  B23K35/002 ,  B23K35/0222 ,  B23K35/0233 ,  B23K35/0238 ,  B23K35/0244 ,  B23K35/025 ,  B23K35/286 ,  B23K35/288 ,  B23K35/36 ,  B23K35/3603 ,  B23K35/3605 ,  B23K35/383 ,  B23K2101/14 ,  B32B15/016 ,  F28F3/06 ,  F28F21/089 ,  F28F2275/04

Abstract: A method for manufacturing a heat exchanger (1) includes joining an inner fin (3) to a hollow structure (20) formed from at least two clad plates (200a, 200b) by heating and brazing a filler metal layer (B). Each clad plate has a core layer (A) composed of an aluminum alloy that contains Mg: 0.40-1.0 mass %. The filler metal layer is composed of an aluminum alloy that contains Si: 4.0-13.0 mass %, and further contains Li: 0.0040-0.10 mass %, Be: 0.0040-0.10 mass %, and/or Bi: 0.01-0.30 mass %. The inner fin is composed of an aluminum alloy that contains Si: 0.30-0.70 mass % and Mg: 0.35-0.80 mass %. A flux (F) that contains cesium (Cs) is applied along a contact part (201), and the vicinity thereof, of the at least two clad plates prior to the heating. A heat exchanger (1) may be manufactured according to this method.

公开(公告)号：US20160319399A1

公开(公告)日：2016-11-03

申请号：US15108564

申请日：2014-12-17

Applicant: UACJ CORPORATION

Inventor： Makoto ANDO ,  Yutaka YANAGAWA ,  Akio NIIKURA

IPC: C22C21/14 ,  C22C21/08 ,  C22C21/02 ,  C22C21/00 ,  C22C21/10 ,  C22F1/057 ,  C22F1/053 ,  C22F1/047 ,  C22F1/043 ,  B23K1/00 ,  B23K35/02 ,  B23K35/28 ,  B22D7/00 ,  F28F21/08 ,  B21B1/26

CPC classification number: C22C21/14 ,  B21B1/22 ,  B21B1/26 ,  B21B3/00 ,  B22D7/005 ,  B23K1/00 ,  B23K1/0012 ,  B23K1/19 ,  B23K20/04 ,  B23K31/02 ,  B23K35/0238 ,  B23K35/22 ,  B23K35/28 ,  B23K35/288 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/00 ,  C22C21/02 ,  C22C21/08 ,  C22C21/10 ,  C22F1/04 ,  C22F1/043 ,  C22F1/047 ,  C22F1/053 ,  C22F1/057 ,  F28F21/084 ,  F28F21/089

Abstract: A highly corrosion resistant and highly formable cladded aluminum-alloy material, a method for producing the same, a heat exchanger using the same and a method for producing the same are shown. The present cladded aluminum-alloy material has an aluminum alloy core material, an intermediate layer material clad on one surface of the core material and a brazing filler metal clad on the intermediate layer material surface which is not at the core material side, wherein a crystal grain size of the intermediate layer material before brazing heating is 60 μm or more, and in a cross section of the core material in a rolling direction before brazing heating, when R1 (μm) represents the crystal grain size in a plate thickness direction, and R2 (μm) represents the crystal grain size in the rolling direction, R1/R2 is 0.30 or less.

Abstract translation: 示出了高度耐腐蚀和高度成形的包覆铝合金材料，其制造方法，使用该方法的热交换器及其制造方法。 本发明的包覆铝合金材料具有铝合金芯材，包覆在芯材的一个表面上的中间层材料和包覆在不在芯材侧的中间层材料表面上的钎料，其中， 钎焊加热前的中间层材料的粒径为60μm以上，在钎焊加热前的轧制方向的芯材的截面中，当R1（μm）表示板厚方向的晶粒尺寸时， R2（μm）表示轧制方向的晶粒尺寸，R1 / R2为0.30以下。

公开(公告)号：US20210213568A1

公开(公告)日：2021-07-15

申请号：US17268283

申请日：2019-09-05

Applicant: UACJ Corporation

Inventor： Yutaka YANAGAWA ,  Tatsuya IDE ,  Taichi SUZUKI ,  Tomoki YAMAYOSHI

IPC: B23K35/02 ,  B32B15/01 ,  B23K35/28 ,  B23K20/02 ,  C23F1/20 ,  C22C21/02

Abstract: In a brazing sheet manufacturing method, a cladding slab is prepared by overlaying at least a core-material slab composed of an aluminum material and a filler-material slab composed of an Al—Si series alloy, in which a metal element that oxidizes more readily than Al is included in at least one of the slabs. A clad sheet is prepared by hot rolling this cladding slab, which then has at least a core material layer composed of the core-material slab and a filler material layer composed of the filler-material slab and disposed on at least one side of the core material. Then, a surface of the clad sheet is etched using a liquid etchant that contains an acid. Subsequently, the clad sheet is cold rolled to a desired thickness. In flux-free brazing, such a brazing sheet is capable of curtailing degradation in brazeability caused by fluctuations in dew point and oxygen concentration.

公开(公告)号：US20180200842A1

公开(公告)日：2018-07-19

申请号：US15744205

申请日：2016-06-29

Applicant: UACJ CORPORATION

Inventor： Yasunaga ITOH ,  Tomoki YAMAYOSHI ,  Yutaka YANAGAWA

IPC: B23K35/28 ,  B23K35/02 ,  C22C21/02 ,  B32B15/01

Abstract: An aluminum alloy brazing sheet used for brazing aluminum, without using a flux, in an inert gas atmosphere or vacuum is formed by arranging a brazing material on one side or both sides of a core material made of pure aluminum or aluminum alloy, the brazing material including 6% to 13% by mass of Si and the balance being Al and inevitable impurities, and performing cladding with an intermediate material interposed between the core material and the brazing material, the intermediate material including 0.01% to 1.5% by mass of Bi, 1.5% to 13% by mass of Si, and the balance being Al and inevitable impurities, the intermediate material having a thickness of 2% to 35% of a thickness of the brazing material, wherein one or both of the intermediate material and the core material includes 0.4% to 6% by mass of Mg.