High Corrosion-Resistant Aluminum Alloy Brazing Sheet And Channel Forming Component For Vehicular Heat Exchanger Using Same

摘要

An aluminum alloy brazing sheet having high corrosion resistance is provided, which develops the sacrificial anticorrosion effect in both surfaces of the sheet, which has the brazing function in one of both the surfaces, and which prevents the occurrence of preferential corrosion. A channel forming component for a vehicular heat exchanger is also provided by utilizing the aluminum alloy brazing sheet. An aluminum alloy brazing sheet having high corrosion resistance includes an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, wherein the filler material, the sacrificial anode material, and the core have respective predetermined alloy compositions. A channel forming component for a vehicular heat exchanger is manufactured using the aluminum alloy brazing sheet having high corrosion resistance.

主权项

1. An aluminum alloy brazing sheet having high corrosion resistance comprising an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, the filler material being made of an aluminum alloy containing Si: 2.5 to 13.0 mass %, Zn: 0.5 to 5.5 mass %, Cu: 0.1 to 0.6 mass %, and Fe: 0.05 to 1.0 mass % with the balance being Al and inevitable impurities, the sacrificial anode material being made of an aluminum alloy containing Zn: 0.5 to 6.0 mass %, Si: 0.05 to 1.5 mass %, and Fe: 0.05 to 2.0 mass % with the balance being Al and inevitable impurities, and the core being made of an aluminum alloy containing Si: 0.05 to 1.2 mass %, Fe: 0.05 to 1.0 mass %, Cu: 0.05 to 1.2 mass %, and Mn: 0.6 to 1.8 mass % with the balance being Al and inevitable impurities.