公开(公告)号：JP2006212638A

公开(公告)日：2006-08-17

申请号：JP2005024718

申请日：2005-02-01

Applicant: Denso Corp ,  Neomax Material:Kk ,  株式会社Neomaxマテリアル ,  株式会社デンソー

Inventor： HASEGAWA TAKESHI ,  ISHIO MASAAKI ,  KAJIKAWA SHUNJI ,  SAKAMOTO ZENJI ,  HAYASHI TAKAYUKI

IPC: B23K1/19 ,  B23K1/00 ,  B23K35/30 ,  C22C9/06 ,  C22C19/05

Abstract: PROBLEM TO BE SOLVED: To provide a brazing method which gives a brazed zone having excellent corrosion resistance, and to provide a material suitable for its practice, and to provide a brazed structure having excellent corrosion resistance in the brazed zone.
SOLUTION: The brazing method comprises following steps. A first joining member 1 is formed with a diffusion suppression layer 13 formed of an Ni-Cr alloy comprising 20 to 40% Cr is stacked and formed on a substrate 12 of a steel material. On the side of the first joining member 1 facing the side of the above diffusion suppression layer 13, a second joining member 2 is arranged via a brazing filler metal 14 of a Cu-Ni-Si alloy comprising 10 to 20% Ni and 0.2 to 1.0% Si, so as to assemble a temporarily assembled body. The temporarily assembled body is held at ≥1.170°C, so as to melt the brazing filler metal 14, on the melted brazing filler metal, a brazed zone 6 into which Ni atoms and Cr atoms are diffused from the diffusion suppression layer 13 is formed, and the melting point of the brazing filler metal in the brazed zone 6 is raised by the increase of the Ni and Cr contents, thus the brazed 6 is solidified for itself and is thereafter cooled.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种钎焊方法，其提供具有优异耐腐蚀性的钎焊区域，并提供适合于其实践的材料，并提供在钎焊区域中具有优异耐腐蚀性的钎焊结构。 解决方案：钎焊方法包括以下步骤。 第一接合构件1形成有由Ni-Cr合金形成的扩散抑制层13，其包含20至40％的Cr层叠并形成在钢材的基板12上。 在第一接合构件1的面向上述扩散抑制层13一侧的一侧，通过包含10〜20％的Ni和0.2的Cu-Ni-Si合金的钎料14配置第二接合构件2〜 1.0％Si，以便组装临时组装的主体。 将临时组装体保持在≥1.170℃，以便熔化钎焊金属14上的熔融钎料，形成从扩散抑制层13扩散Ni原子和Cr原子的钎焊区6 ，并且钎焊区域6中的钎料的熔点由于Ni和Cr含量的增加而升高，因此钎焊6自身固化，然后冷却。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2003145290A

公开(公告)日：2003-05-20

申请号：JP2001344290

申请日：2001-11-09

Applicant: SUMITOMO SPEC METALS ,  DENSO CORP

Inventor： HASEGAWA TAKESHI ,  ISHIO MASAAKI ,  KAJIKAWA SHUNJI ,  SAKAMOTO ZENJI ,  MAEDA AKIHIRO

IPC: F28F21/08 ,  B23K1/20 ,  B23K35/14 ,  B23K101/14 ,  C22C9/00 ,  C22C9/01 ,  C22C9/05 ,  C22C19/05

Abstract: PROBLEM TO BE SOLVED: To provide a material for brazing in which the corrosion resistance and the oxidization resistance of a brazing filler metal part with which joined members are brazed are improved and to provide a brazing structure which is suitable for the flow passage structure of a heat exchanger. SOLUTION: The structure is provided with a base plate 11 which is formed by a stainless steel member 11, a Fe-atom-diffusion-suppressing layer 12 which is formed by a Ni-Cr alloy which consists essentially of Ni and includes 10 to 30 mass % Cr, and further provided with, when necessary, a brazing filler metal layer 13 which is formed by a Cu-based brazing filler metal formed as a lamination on the Fe-atom-diffusion-suppressing layer 12. The diffusion of Fe atoms in the base plate into the brazing filler metal which is melted during a brazing process is suppressed by the Fe-atom-diffusion-suppressing layer, and a proper amounts of Ni and Cr are diffused into the brazing filler metal part, thus the excellent corrosion resistance and the oxidization resistance are given to the brazing filler metal part.

公开(公告)号：JP2001001133A

公开(公告)日：2001-01-09

申请号：JP16989599

申请日：1999-06-16

Applicant: DENSO CORP

Inventor： UCHIMURA KATSUNORI ,  KAJIKAWA SHUNJI ,  OKAZAKI KEIICHI ,  SAKAMOTO ZENJI ,  YAMANAKA YASUTOSHI ,  SUZUKI YASUHIRO

IPC: B23K1/00 ,  B23K1/19 ,  B23K1/20 ,  F02M25/07

Abstract: PROBLEM TO BE SOLVED: To provide a brazing method excellent in the corrosion resistance. SOLUTION: After forming a metallic layer (diffusion preventing layer) 150 of a nickel by cladding the nickel on each surface mutually faced in a first and a second plates 111, 112, a copper is heated to not lower than the m.p. of the copper as a brazing filler metal to join the first and the second plates 111, 112 with brazing. In this way, since the copper in the copper layer 160 becomes the nickel alloy and both plates are brazed while preventing the diffusion of iron in a stainless steel into the copper layer 160 side as the brazing filler metal, both plates 111, 112 can surely be joined with brazing while displaying the excellent corrosion resistance.

公开(公告)号：JP2006212639A

公开(公告)日：2006-08-17

申请号：JP2005024719

申请日：2005-02-01

Applicant: Denso Corp ,  Neomax Material:Kk ,  株式会社Neomaxマテリアル ,  株式会社デンソー

Inventor： HASEGAWA TAKESHI ,  ISHIO MASAAKI ,  KAJIKAWA SHUNJI ,  SAKAMOTO ZENJI ,  HAYASHI TAKAYUKI

IPC: B23K1/20 ,  B23K1/19 ,  B23K35/30 ,  B23K101/14 ,  B23K103/04 ,  C22C9/06 ,  C22C19/05

Abstract: PROBLEM TO BE SOLVED: To provide a brazing method which gives a brazed zone having excellent corrosion resistance, to provide a material suitable for its practise, and to provide a brazed structure having excellent corrosion resistance in the brazed zone.
SOLUTION: The brazing method comprises following steps. A first joining member 1 is formed with a diffusion suppression layer 13 formed of an Ni-Cr alloy comprising 20 to 40% Cr is stacked and formed on a substrate 12 of a steel material 12. On the side of the first joining member 1 facing the side of the above diffusion suppression layer 13, a second joining member 2 is arranged via a brazing filler metal 14 of a Cu-Ni-Sn alloy comprising 10 to 20% Ni and 1.0 to 3.0% Sn, so as to assemble a temporarily assembled body. The temporarily assembled body is held at a temperature of ≥1,170°C so as to melt the brazing filler metal 14, on the melted brazing filler metal, a brazed zone 6 into which Ni atoms and Cr atoms are diffused from the diffusion suppression layer 13 is formed, and the melting point of the brazing filler metal in the brazed zone 6 is raised by the increase of the contents of Ni and Cr, thus the brazed zone 6 is solidified for itself and is thereafter cooled.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种钎焊方法，其提供具有优异耐腐蚀性的钎焊区域，以提供适合于其实践的材料，并提供在钎焊区域中具有优异耐腐蚀性的钎焊结构。 解决方案：钎焊方法包括以下步骤。 第一接合构件1形成有由Ni-Cr合金形成的扩散抑制层13，该扩散抑制层13包含20〜40％的Cr层叠并形成在钢材12的基板12上。在第一接合构件1的面对 上述扩散抑制层13的一侧，通过包含10〜20％Ni和1.0〜3.0％Sn的Cu-Ni-Sn合金的钎料14配置第2接合构件2，以便组装临时 组装体。 将临时组装的体保持在≥1,170℃的温度下，熔融钎焊金属上的钎料14，从扩散抑制层13扩散Ni原子和Cr原子的钎焊区6 并且通过Ni和Cr的含量的增加，钎焊区6中的钎料的熔点升高，因此钎焊区6自身固化，然后冷却。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2002028775A

公开(公告)日：2002-01-29

申请号：JP2001057725

申请日：2001-03-02

Applicant: DENSO CORP

Inventor： MAEDA AKIHIRO ,  SAKAMOTO ZENJI ,  OBAYASHI SHINKICHI ,  KAJIKAWA SHUNJI

IPC: F28F9/02 ,  B23K1/00 ,  B23K1/19 ,  B23K1/20 ,  B23K35/00 ,  B23K35/30 ,  B23K35/32 ,  B23K101/14 ,  F02M25/07 ,  F28D1/06 ,  F28D7/16 ,  F28F3/02 ,  F28F21/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing an inexpensive, highly corrosion resistant heat exchanger formed of stainless steel. SOLUTION: A chromium brazing filler metal layer 21 is formed after applying the Cr electroplating of a plating thickness of 15 μm on both end faces of first and second forming stainless steel plates 1 and 2 alternately stacked on each other in the thickness direction, and then a nickel brazing filler metal layer 22 is formed after applying the Ni-P plating of a plating thickness of 35 μm on the chromium brazing filler metal layer 21. The highly corrosion resistant heat exchanger is manufactured by applying the integral brazing with the chromium brazing filler metal layer 21 and the nickel brazing filler metal layer 22 interposed between the first and second forming plates 1 and 2. A highly corrosion resistant brazing filler metal 31 having an alloy composition consisting of Ni-Cr28-P8, etc., is obtained on both end faces of the first and second forming plates 1 and 2. A fine metal structure in the highly corrosion resistant brazing filler metal 31 can be realized, and generation of cracks in the interface of the metal structure can be reduced.

公开(公告)号：JP2006037137A

公开(公告)日：2006-02-09

申请号：JP2004215694

申请日：2004-07-23

Applicant: Denso Corp ,  Sumitomo Light Metal Ind Ltd ,  住友軽金属工業株式会社 ,  株式会社デンソー

Inventor： KAJIKAWA SHUNJI ,  OKAZAKI KEIICHI ,  OZAKI RYOTA ,  KOYAMA TAKAHIRO ,  TANAKA HIROKAZU

IPC: C22C21/00 ,  B23K35/22 ,  F28F19/06

Abstract: PROBLEM TO BE SOLVED: To provide a highly corrosion resistant aluminum clad material for a heat exchanger suitably used for a tube material of a heat exchanger, particularly of an automobile heat exchanger such as a piping material (extruded clad pipe material) connected with a heat exchanger, a tube material of an automobile heat exchanger made of an aluminum alloy such as an evaporator, a condenser, a radiator, a heater core, an intercooler and an oil cooler joined by vacuum brazing or inert gas atmosphere brazing using fluoride-based flux, and a tube material for a heat exchanger connected by a non-brazing system such as adhesion, welding and soldering.
SOLUTION: The aluminum clad material is obtained by cladding at least one side of a core material composed of aluminum with a sacrificial anode material or obtained by cladding one side of a core material with a sacrificial anode material and cladding the other side with a brazing filler metal. The sacrificial anode material is composed of pure aluminum having an aluminum purity of ≥99.9% or an aluminum alloy at least containing Mg, wherein the total content of Al and Mg is ≥99.9%.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种适用于热交换器的管材的热交换器的高耐腐蚀铝包层材料，特别是连接到诸如管道材料（挤压复合管材料）的汽车热交换器 具有热交换器，由铝合金制成的汽车热交换器的管材，例如蒸发器，冷凝器，散热器，加热器芯，中间冷却器和油冷却器，通过真空钎焊或惰性气体气氛钎焊使用氟化物 的焊剂和用于通过非钎焊系统如粘合，焊接和焊接连接的热交换器的管材料。 解决方案：铝包覆材料通过用牺牲阳极材料包覆由铝构成的芯材的至少一侧而获得，或者通过用牺牲阳极材料包覆芯材的一侧而获得，并且将另一侧包覆 钎焊金属。 牺牲阳极材料由铝纯度≥99.9％的纯铝或至少含有Mg的铝合金组成，其中Al和Mg的总含量≥99.9％。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006037136A

公开(公告)日：2006-02-09

申请号：JP2004215693

申请日：2004-07-23

Applicant: Denso Corp ,  Sumitomo Light Metal Ind Ltd ,  住友軽金属工業株式会社 ,  株式会社デンソー

Inventor： KAJIKAWA SHUNJI ,  OKAZAKI KEIICHI ,  OZAKI RYOTA ,  KOYAMA TAKAHIRO ,  TANAKA HIROKAZU

IPC: C22C21/00 ,  B23K35/22 ,  F28F21/08

Abstract: PROBLEM TO BE SOLVED: To provide a highly corrosion resistant aluminum clad material for a heat exchanger suitably used for a tube material of a heat exchanger, particularly of an automobile heat exchanger such as a piping material (extruded clad pipe material) connected with a heat exchanger, a tube material for an automobile heat exchanger made of an aluminum alloy such as an evaporator, a condenser, a radiator, a heater core, an intercooler and an oil cooler joined by vacuum brazing or inert gas atmosphere brazing using fluoride-based flux, and a tube material for a heat exchanger connected by a non-brazing system such as adhesion, welding, soldering or the like.
SOLUTION: The aluminum clad material is obtained by cladding at least one side of a core material composed of aluminum with a sacrificial anode material or obtained by cladding one side of a core material with a sacrificial anode material and cladding the other side with a brazing filler metal. The sacrificial anode material is composed of an aluminum alloy containing Mg, wherein the total content of Al and Mg is ≥99.9%.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种适用于热交换器的管材的热交换器的高耐腐蚀铝包层材料，特别是连接到诸如管道材料（挤压复合管材料）的汽车热交换器 具有热交换器，用于由诸如蒸发器，冷凝器，散热器，加热器芯，中间冷却器和油冷却器的铝合金制成的汽车热交换器的管材料，其通过真空钎焊或使用氟化物的惰性气体气氛钎焊连接 的焊剂和用于通过诸如粘合，焊接，焊接等的非钎焊系统连接的热交换器的管材料。 解决方案：铝包覆材料通过用牺牲阳极材料包覆由铝构成的芯材的至少一侧而获得，或者通过用牺牲阳极材料包覆芯材的一侧而获得，并且将另一侧包覆 钎焊金属。 牺牲阳极材料由含有Mg的铝合金组成，其中Al和Mg的总含量≥99.9％。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006037135A

公开(公告)日：2006-02-09

申请号：JP2004215692

申请日：2004-07-23

Applicant: Denso Corp ,  Sumitomo Light Metal Ind Ltd ,  住友軽金属工業株式会社 ,  株式会社デンソー

Inventor： KAJIKAWA SHUNJI ,  OKAZAKI KEIICHI ,  OZAKI RYOTA ,  KOYAMA TAKAHIRO ,  TANAKA HIROKAZU

IPC: C22C21/00 ,  B23K35/22 ,  F28F21/08

Abstract: PROBLEM TO BE SOLVED: To provide a highly corrosion resistant aluminum clad material for a heat exchanger suitably used for a tube material of a heat exchanger, particularly of an automobile heat exchanger such as a piping material (extruded clad pipe material) connected with a heat exchanger, a tube material for an automobile heat exchanger made of an aluminum alloy such as an evaporator, a condenser, a radiator, a heater core, an intercooler and an oil cooler joined by vacuum brazing or inert gas atmosphere brazing using fluoride-based flux, and a tube material for a heat exchanger connected by a non-brazing system such as adhesion, welding and soldering.
SOLUTION: The aluminum clad material is obtained by cladding at least one side of a core material composed of aluminum with a sacrificial anode material or obtained by cladding one side of a core material with a sacrificial anode material and cladding the other side with a brazing filler metal. The sacrificial anode material is composed of pure aluminum having an aluminum purity of ≥99.9%.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种适用于热交换器的管材的热交换器的高耐腐蚀铝包层材料，特别是连接到诸如管道材料（挤压复合管材料）的汽车热交换器 具有热交换器，用于由诸如蒸发器，冷凝器，散热器，加热器芯，中间冷却器和油冷却器的铝合金制成的汽车热交换器的管材料，其通过真空钎焊或使用氟化物的惰性气体气氛钎焊连接 的焊剂和用于通过非钎焊系统如粘合，焊接和焊接连接的热交换器的管材料。 解决方案：铝包覆材料通过用牺牲阳极材料包覆由铝构成的芯材的至少一侧而获得，或者通过用牺牲阳极材料包覆芯材的一侧而获得，并且将另一侧包覆 钎焊金属。 牺牲阳极材料由铝纯度≥99.9％的纯铝组成。 版权所有（C）2006，JPO＆NCIPI