Preparation method for double-sided light aluminum foil

Abstract

The invention discloses a preparation method for a double-sided light aluminum foil. The preparation method comprises the following steps that (1) cast-rolling is performed, wherein an aluminum alloymaterial and an aluminum ingot are put into a melting furnace for melting, after standing is performed through a standing furnace, a molten liquid is filtered, and a cast-rolled plate is obtained after multiple times of cast-rolling is performed by a cast-rolling machine; (2) cold rolling is performed, wherein the cast-rolled plate is cooled to room temperature, multiple times of cold pressing isperformed by a cold press, and then multiple times of annealing treatment is performed to obtain an aluminum foil stock; (3) an aluminum foil working procedure is performed, wherein the aluminum foilstock undergoes five passes of rolling working procedures to obtain a finished aluminum foil, the first pass of the rolling working procedure to the third time of the rolling working procedure are rough rolling, the thickness of the obtained aluminum foil is 0.03 mm, the fourth pass of the rolling working procedure is intermediate rolling, the thickness of the obtained aluminum foil is 0.014 mm, the fifth pass of rolling working procedure is finish rolling, and the aluminum foil with the thickness of 0.009 mm is obtained. According to the method, the distribution of reduction pass of an aluminum foil rolling working procedure is adjusted again, the pass reduction rate of the third pass is properly improved, the pass reduction rate of the fifth pass, namely, the pass reduction rate of the final pass is reduced, so that the reduction process speed is reduced, and the thickness of the product is reduced easier.

Description

technical field [0001] The invention relates to the field of aluminum foil processing for lithium batteries, in particular to a preparation method of double-sided glossy aluminum foil. Background technique [0002] my country has now become the world's largest aluminum foil production country, with an annual output of more than 1,000kt of aluminum foil products, and the technology of aluminum foil production is becoming more and more mature. Aluminum foil products have been widely used in food packaging, pharmaceutical packaging, air conditioners, electronics and other industries, and the development prospects are very broad. [0003] At present, the aluminum foil products we produce are divided into two types: double-sided light and single-sided light according to the surface state. Double-sided aluminum foil, the finished product pass is single-sheet rolling, that is, the entrance and exit are single-sheet aluminum foil. The product produced by this process has both upper...

AI Technical Summary

Problems solved by technology

However, it is very difficult to produce by sheet rolling, and it is difficult to produce stable and qualified products in batches.

[0007] 2. When the original process produces single-sheet finished products, there are problems such as difficulty in threading at the rolling entrance, high rate of product breakage, poor surface quality, and low yield

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