Aluminium alloy foil material for heat exchanger fin and mfg. process thereof

Abstract

This invention discloses a fin heat-exchanger made of aluminum alloy foil and its preparation method. The ingredient and ratio of the alloy are as follows: iron is 0.15-0.40%, silicon is 0.05-0.30%, copper is 0-0.10%, manganese is 0.05-0.30%, the element of rare-earth is 0.05-0.4%, titanium is 0.010-0.060%, the other is aluminum. The ingredient and ratio of rare-earth is as follows: lanthanum is 20-40%, cerium is 45-65%, praseodymium is 5-15%, neodymium is 1-9%, samarium is 0-0.05%, yttrium is 0-0.05%,the other is impurities. The preparation method includes four processes: the preparation of rare-earth aluminum alloy, the casting of blank, cold-rolling of slat and heat treating. Contrasting to the existing aluminum alloy material, the product has the better extension and toughness, the smaller aeolotropism at the same thickness and hardness, and it can be suitable to punch at high flanged fill heat-exchanger and could not crack.

Description

1. Technical field [0001] The invention relates to a heat exchanger material used in refrigeration equipment such as refrigerators and air conditioners and radiators for automobiles, especially an aluminum alloy foil material for heat exchanger fins. The invention also provides the aluminum alloy foil The method of manufacturing the material. 2. Background technology [0002] With the improvement of people's living standards, the refrigeration equipment industry such as air conditioners and refrigerators has been continuously developed. Heat exchangers for air conditioners and refrigerators are usually assembled with fins made of aluminum alloy foil and metal tubes passing through the fins. The metal tube passes through the punching part on the fin, and after the tube is expanded, the metal tube and the fin are closely attached. When the air conditioner or refrigerator is running, the refrigerant exchanges heat with the outside through the metal tube and the fin. The crack...

AI Technical Summary

Problems solved by technology

In order to meet the above requirements, the corresponding radiator fin materials need to have higher strength and toughness. 3102 aluminum alloy foil is a commonly used fin material. The chemical composition of aluminum alloy foil for fins is very important. Its manuf