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公开(公告)号：US10682730B2
公开(公告)日：2020-06-16
申请号：US15744205
申请日：2016-06-29
申请人： UACJ Corporation
发明人： Yasunaga Itoh , Tomoki Yamayoshi , Yutaka Yanagawa
IPC分类号： B23K35/28 , B23K35/22 , C22C21/00 , F28F21/08 , B23K35/02 , B32B15/01 , C22C21/02 , B23K101/14 , F28F3/02 , F28F1/02
摘要： 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.
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公开(公告)号：US20180093355A1
公开(公告)日：2018-04-05
申请号：US15566402
申请日：2016-04-18
CPC分类号： B23K35/286 , B23K35/22 , B23K35/28 , B32B15/016 , B60H1/00321 , C22C21/00 , C22C21/08 , F28F3/08 , F28F21/08 , F28F21/084 , F28F21/089
摘要： An aluminum heat exchanger is made by disposing an inner fin in a closed space formed by overlapping edge portions of a formed single tube plate or a plurality of formed tube plates, and brazing a first joint obtained by overlapping the edge portions of the tube plate and a second joint obtained by causing the inner fin to abut against the tube plate, wherein an Al—Si-based brazing filler material is interposed at the first and second joints, and brazing is carried out in an inert gas atmosphere without using flux, wherein the inner fin is constituted of a brazing sheet obtained by cladding a core material of an aluminum alloy, on both surfaces thereof, with the Al—Si-based brazing filler material having a solidus temperature of 570° C. or lower, the solidus temperature being lower than a solidus temperature of the Al—Si-based brazing filler material interposed at the first joint.
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公开(公告)号：US20140315042A1
公开(公告)日：2014-10-23
申请号：US14360249
申请日：2013-01-11
申请人： UACJ Corporation
发明人： Yoshikazu Suzuki , Akihito Gotou , Yutaka Yanagawa
CPC分类号： B23K35/0238 , B23K35/0233 , B23K35/286 , B23K35/40 , B32B15/016 , C22C21/00 , C22C21/02 , Y10T428/12764
摘要： A brazing sheet for flux-free brazing, comprising a core material, a brazing material disposed on at least one surface of the core material, and a thin skin material disposed on the brazing material, wherein the core material is made of an aluminum alloy having a higher melting point than that of the brazing material; the brazing material is made of an Al—Si—Mg based alloy and has a thickness of 25 to 250 μm; the thin skin material is made of an aluminum alloy having a higher melting initiation temperature than the brazing material and containing substantially no Mg, and has a thickness of 5 to 30 μm; and a content of an oxide existing at an interface between the brazing material and the thin skin material is 0.1 ppm or less in weight ratio with respect to the entire clad material. The present invention provides a brazing sheet for flux-free brazing, which has a thin skin material, with uniform brazing characteristics, and enables stable joining.
摘要翻译： 一种用于无助焊钎焊的钎焊片，包括芯材料，设置在芯材的至少一个表面上的钎焊材料和设置在钎焊材料上的薄表皮材料，其中芯材由铝合金制成，其具有 熔点比钎料高; 钎焊材料由Al-Si-Mg基合金制成，厚度为25〜250μm; 薄的表皮材料由比钎料高的熔融起始温度的铝合金制成，并且基本上不含Mg，并且具有5至30μm的厚度; 存在于钎料和薄皮材料之间的界面处的氧化物的含量相对于整个包覆材料的重量比为0.1ppm以下。 本发明提供一种无助焊剂的钎焊片，其具有薄的表皮材料，具有均匀的钎焊特性，并且能够稳定的接合。
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公开(公告)号：US20210039207A1
公开(公告)日：2021-02-11
申请号：US16977900
申请日：2019-03-05
发明人： Tatsuya Ide , Yutaka Yanagawa , Shogo Yamada , Takahiro Shinoda , Shingo Ono
摘要： A flux-free brazing aluminum alloy brazing sheet includes: a core material formed of aluminum alloy comprising Si of 0.50 to 0.90 mass %, Cu of 0.30 to 2.50 mass %, and Mn of 1.40 to 1.80 mass %, with a Mg content limited to 0.05 mass % or less, and with the balance being Al and inevitable impurities; an intermediate material being formed of aluminum alloy comprising Mg of 0.40 to 1.00 mass %, and Zn of 2.00 to 6.00 mass %, with the balance being Al and inevitable impurities; and a brazing material being formed of aluminum alloy comprising Si of 6.00 to 13.00 mass %, Mg of 0.05 to 0.40 mass %, and Bi of 0.010 to 0.050 mass %, with the balance being Al and inevitable impurities.
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公开(公告)号：US20180290245A1
公开(公告)日：2018-10-11
申请号：US15577971
申请日：2016-05-23
申请人： UACJ Corporation
摘要： An aluminum alloy clad material includes a core material that is made of an aluminum alloy containing Mg at a concentration of 0.2 to 2.0% (mass %; the same applies below), with the balance being Al and unavoidable impurities, and has one side or two sides cladded with a surface-layer material made of pure aluminum containing Mg having a limited concentration of lower than 0.1%. In addition, an aluminum alloy clad material includes a core material that is made of aluminum or an aluminum alloy, and has one side or two sides cladded with a surface-layer material made of pure aluminum containing Mg having a limited concentration of lower than 0.1%, via an interlayer material made of an aluminum alloy containing Mg at a concentration of 0.3 to 2.0%, with the balance being Al and unavoidable impurities.
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公开(公告)号：US11571769B2
公开(公告)日：2023-02-07
申请号：US17268283
申请日：2019-09-05
申请人： UACJ Corporation
发明人： Yutaka Yanagawa , Tatsuya Ide , Taichi Suzuki , Tomoki Yamayoshi
摘要： 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.
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公开(公告)号：US11565335B2
公开(公告)日：2023-01-31
申请号：US16966180
申请日：2019-01-30
申请人： UACJ Corporation
发明人： Yutaka Yanagawa
IPC分类号： B23K1/008 , B23K1/00 , B23K1/19 , B23K3/08 , B23K103/10 , B23K101/14
摘要： A brazing method for brazing a material without using a flux includes performing brazing in an inert gas atmosphere, in a state in which the material to be brazed is covered with a cover member formed of an upper cover portion covering the whole upper portion of the material to be brazed and side cover portions covering at least some of the side portions of the material to be brazed, with the upper cover portion contacting the upper portion of the material to be brazed, and the material to be brazed and the cover member are held with a heat transmission promoting member formed of an upper heat transmission promoting portion and a lower heat transmission promoting portion, with the upper heat transmission promoting portion contacting the upper cover portion, and with the lower heat transmission promoting portion contacting the lower portion of the material to be brazed.
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公开(公告)号：US11320217B2
公开(公告)日：2022-05-03
申请号：US16988903
申请日：2020-08-10
申请人： UACJ Corporation
IPC分类号： F28F3/06 , F28F21/08 , B23K1/00 , B23K35/36 , B32B15/01 , B23K35/00 , B23K35/02 , B23K1/19 , B23K1/20 , B23K35/28 , B23K1/008 , B23K35/38 , H05K7/20 , B23K101/14
摘要： 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.
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公开(公告)号：US10661395B2
公开(公告)日：2020-05-26
申请号：US15325530
申请日：2015-07-29
申请人： UACJ Corporation
IPC分类号： B23K1/00 , B23K35/28 , B23K31/02 , B23K35/22 , C22C21/00 , B23K1/19 , B23K35/02 , B32B15/01 , B23K1/008 , C22C21/02 , C22C21/06
摘要： 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.
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公开(公告)号：US20240316667A1
公开(公告)日：2024-09-26
申请号：US18693701
申请日：2022-08-09
申请人： UACJ Corporation
CPC分类号： B23K1/19 , B23K35/286 , C22F1/043 , C22F1/047
摘要： Provided is a brazing sheet that can exhibit excellent brazability in brazing an aluminum material without using flux in an inert gas atmosphere such as nitrogen gas atmosphere. An aluminum alloy brazing sheet to be used for brazing in an inert gas atmosphere is an aluminum alloy brazing sheet comprising: a core material; and a brazing material clad on one side or both sides of the core material, wherein the core material is made of an aluminum alloy comprising Mg at 0.10 to 0.50 mass % with the balance being aluminum and inevitable impurities, the brazing material is made of an aluminum alloy comprising Si at 6.00 to 13.00 mass % and Mg at a content limited to less than 0.05 mass % with the balance being aluminum and inevitable impurities, and a Mg integration value from a surface of the brazing material to a depth of 30 nm is 150 atm %×nm or less.
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