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AssigneeCalsonic Kansei Corporation
InventorsYuji Yoshidomi, Junichiro Hirohashi
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There is disclosed a sacrificial corrosion-protective aluminum alloy for heat exchangers which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities. There is also disclosed an aluminum alloy composite material in which the said aluminum alloy is used as the sacrificial material and a heat exchanger using the aluminum alloy composite material. According to the aluminum alloy composite material, it is possible to prevent erosion of heat-exchanger tubes when refrigerant in tube is strongly alkaline and is flowing at a high flow rate.
An aluminum alloy composite material for heat exchangers which is formed by cladding one side of an aluminum alloy core material with a sacrificial corrosion-protective aluminum alloy which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities, and by cladding the other side of the core material with a filler alloy of Al—Si-series, wherein the aluminum alloy core material contains 0.05 to 0.8 wt % of Fe, 0.05 to 2.0 wt % of Mn, and 0.05 to 2.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities.
An aluminum alloy composite material for heat exchangers which is formed by cladding one side of an aluminum alloy core material with a sacrificial corrosion-protective aluminum alloy which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities, and by cladding the other side of the core material with a filler alloy of Al—Si-series, wherein the aluminum alloy core material contains 0.05 to 0.8 wt % of Fe, 0.05 to 2.0 wt % of Mn, and 0.05 to 2.0 wt % of Ni, and one or more alloying elements selected from the group consisting of 0.05 to 1.2 wt % of Si, 0.003 to 1.2 wt % of Cu, 0.03 to 0.5 wt % of Mg, 0.03 to 0.3 wt % of Cr, 0.03 to 0.3 wt % of Zr, and 0.03 to 0.3 wt % of Ti, with the balance being made of aluminum and unavoidable impurities.
An aluminum alloy composite material for heat exchangers which is formed by cladding one side of an aluminum alloy core material with a sacrificial corrosion-protective aluminum alloy which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities, wherein the aluminum alloy core material contains 0.05 to 0.8 wt % of Fe, 0.05 to 2.0 wt % of Mn, and 0.05 to 2.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities.
An aluminum alloy composite material for heat exchangers which is formed by cladding one side of an aluminum alloy core material with a sacrificial corrosion-protective aluminum alloy which contains Zn more than 4.0 wt % but 15.0 wt % or less, 0.1 to 3.0 wt % of Fe, and 0.2 to 3.0 wt % of Ni, with the balance being made of aluminum and unavoidable impurities, wherein the aluminum alloy core material contains 0.05 to 0.8 wt % of Fe, 0.05 to 2.0 wt % of Mn, and 0.05 to 2.0 wt % of Ni, and one or more alloying elements selected from the group consisting of 0.05 to 1.2 wt % of Si, 0.003 to 1.2 wt % of Cu, 0.03 to 0.5 wt % of Mg, 0.03 to 0. 3 wt % of Cr, 0.03 to 0.3 wt % of Zr, and 0.03 to 0.3 wt % of Ti, with the balance being made of aluminum and unavoidable impurities.
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