Aluminium alloy foil for founding and rolling automotive heat radiator fin billet and manufacturing method thereof

Abstract

The invention discloses an aluminum alloy foil used in strand car radiator fin and its manufacturing process, in which the component and the proportion by weight of the foil are: 0.50-0.70 % iron, 0.26-0.54% silicon, 0-0.05 % copper, 1.0-1.3% manganese, 1.4-1.8% zinc, 0.01-0.03% titanium and the other is aluminum. The manufacturing process consists of first casting bar plate, then performing cold reducing working for casting bar plate to prepare foil finished articles. Compared with the current invention, with the same thickness, the product has higher intensity and fine sag resistance under an elevated temperature, by which the fin can not collapse when the car radiator welds under an elevated temperature.

Description

1. Technical field [0001] The invention relates to a heat exchanger material used in an automobile brazing radiator, in particular to an aluminum alloy foil material for heat exchanger fins, and also provides a manufacturing method of the aluminum alloy foil material. 2. Background technology [0002] In recent years, with the rapid development of the automobile industry, because aluminum alloy is superior to copper in terms of price, weight, brazing strength, and corrosion resistance, the automobile industry has produced a change in the replacement of copper radiators with aluminum radiators. Automobile brazed radiators are brazed by pipes and aluminum alloy fins. The conduit is in the shape of a flat cylinder, one side of which is formed by seam welding of a brazing plate with a cladding layer after rolling. The aluminum alloy heat sink is made by machine folding and then drilling heat dissipation holes. Due to the harsh working environment of aluminum foil for automobil...

AI Technical Summary

Problems solved by technology

Therefore, the selection of the chemical composition of the new aluminum alloy foil for fins is very important, and its manufacturing method is an important factor for whether the aluminum alloy foil can meet the performance requirements. At present, the existing radiator aluminum foil materials have a wide range of components. Among them, 3003 aluminum alloy foil is the most commonly used fin material, but none of these materials can fully meet the specific requirements of foil for automotive radiator fins