A kind of preparation method of aluminum foil for automobile air conditioner

Abstract

The invention discloses a preparation method of aluminum foil for an automobile air conditioner. The preparation method comprises the following steps that electrolytic aluminum liquid, an aluminum ingot and aluminum alloy solid waste are smelted into an aluminum melt, an aluminum foil coil with the thickness of 2.5-3.5 mm is prepared through a continuous casting process and a continuous rolling process, then the aluminum foil coil is subjected to cold rolling, longitudinal shearing and side shearing, intermediate annealing, foil rolling, finished product slitting, and inspection and packaging to prepare the aluminum foil for the automobile air conditioner, wherein the longitudinal shearing and edge shearing, the finished product slitting and the inspection and packaging are carried out according to conventional processes. According to the preparation method, the thickness of the finished product of the aluminum foil can reach 0.06 mm and is reduced by more than 20% compared with that of aluminum foil for a common automobile air conditioner, the manufacturing cost of the automobile is greatly reduced, the light weight effect of the automobile is achieved, the process flow is shortened, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of new material research, in particular to a method for preparing aluminum foil for automobile air conditioners. Background technique [0002] At present, the automobile industry has begun to gradually adopt 3003 aluminum alloy to replace other aluminum alloys as automobile heat sinks, especially the 3003 alloy after adding Zn elements, which not only ensures the strength of the aluminum alloy, but also enhances the weldability, and the thickness is generally controlled at 0.1 to 0.2 Between mm, if the thickness continues to decrease, due to the insufficient thermal sag resistance, problems such as radiator collapse and deformation will easily occur during welding. [0003] The conventional process of hot-rolling 3003 alloy to prepare aluminum foil for automobile air conditioner is: melting and casting→hot rolling→cold rolling→intermediate annealing→foil rolling→finished product cutting→inspection and packaging, each ...

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Problems solved by technology

[0022] The tensile strength of the air-conditioning aluminum foil prepared above reaches 200Mpa, but there are many production processes, long production cycle and high cost.

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