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Patent

Aluminum alloy composite material for heat exchanger excellent in fatigue strength and corrosion resistance

Takenobu Dokou, +3 more
TLDR
In this paper, the authors proposed a thin aluminum alloy composite material for a heat exchanger with a three-layer structure in which one side of a core material 7 is clad with a brazing filler metal 9 and the other side is clothed with a sacrificial material 8.
Abstract: 
PURPOSE: To produce a thin aluminum alloy composite material excellent in fatigue strength and corrosion resistance. CONSTITUTION: This aluminum alloy composite material is the one in which, in an aluminum alloy composite material for a heat exchanger with a three- layered structure in which one side of a core material 7 is clad with a brazing filler metal 9 and the other side is clad with a sacrificial material 8, the core material 7 is constituted of an aluminum alloy contg., by weight, 0.05 to 3.0 to 6.0% Zn, and the balance Al with inevitable impurities, and furthermore, the hardness of the sacrificial material 8 after brazing heating is regulated to the hardness of the core material 7 or above. Since the sacrificial material 8 is compositionally excellent in corrosion resistance and the hardness of the sacrificial material 8 is regulated to the hardness of the core material 7 or above, cracks are hard to generate on the surface under vibration, and it is excellent in fatigue strength even in the case of being thin.

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Patent

Aluminum alloy clad material for heat exchangers exhibiting high strength and excellent corrosion resistance

Sunao Fukuda, +5 more
TL;DR: In this article, an aluminum alloy clad material for heat exchangers exhibiting superior strength after brazing and excellent corrosion resistance is provided, where a sacrificial anode material which is clad on one side of a core material, wherein the core material comprises an aluminium alloy comprising 0.3-2.0% of Mn, 0.25-1.1% of Si, and 0.05-0.35% of Ti with the remaining portion consisting of aluminum and impurities.
Patent

Aluminum alloy clad sheet for a heat exchanger and its production method

Fumihiro Koshigoe, +5 more
TL;DR: In this article, an aluminum alloy clad sheet for a heat exchanger including a core layer, a sacrificial layer formed on one surface of the core layer and a filler layer including an Al-Si based alloy formed on the other surface.
Patent

Aluminum brazing sheet

Okamoto Tadashi, +5 more
TL;DR: In this paper, a core material of an aluminum brazing sheet restricts Mg to less than 0.3 wt %, and Fe to not more than 1.5 Wt % of Mg, and the balance of Al and inevitable impurities.
Patent

Aluminum alloy brazing sheet

Sho Ishigami, +5 more
TL;DR: In this paper, a brazing sheet made of an aluminum alloy, which has both high strength and formability even if it is a tube material having a thinner wall and is used for making brazed tube, is presented.
Patent

Aluminum alloy brazing sheet and process for producing the same

Fumihiro Koshigoe, +2 more
TL;DR: An aluminum alloy brazing sheet for heat exchanger that excels in the resistance to corrosion from its interior and simultaneously attains erosion resistance and high strength is presented in this article, where the crystal grain diameter of the core member is in the range of 50 to less than 300 μm in the rolling direction.