Preparation method of high-strength domestic aluminum foil

Abstract

The invention discloses a preparation method of a high-strength domestic aluminum foil. Compared with 8006 alloy composition, the contents of Si and Mn are unchanged, the content of Fe is decreased to1.1 to 1.2 from 1.4 to 1.5, the content of Cu is decreased to 0.05 from 0.25, the content of Zn is decreased to 0.02 from 0.25, trace amounts of Cr and Ti are added, Al comprises 80 to 90 parts of electrolytic aluminum liquid and 10 to 20 parts of aluminum ingots with the impurity of greater than or equal to 99.7% in parts by weight, an aluminum roll with the thickness of 3 to 5 mm is prepared through a continuous casting and rolling working procedure, and the high-strength domestic aluminum foil is prepared through cold rolling, longitudinal edge trimming, foil rolling, finished product slitting, finished product annealing and packaging after inspection. According to the method, one to two times of sub-processing is omitted compared with a traditional production technology, the production cost is reduced, the method is energy-saving and cost-reducing, emission of carbon dioxide is reduced, the production cost is reduced, and the method has obvious economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of aluminum foil processing, in particular to a preparation method of high-strength household aluminum foil. Background technique [0002] Household aluminum foil is a kind of aluminum foil widely used in aviation food, fast food packaging and other fields. It has the characteristics of beautiful, generous, clean and hygienic. [0003] Common household aluminum foil alloys on the market are usually made of 8011 grade deformed aluminum alloy. Although the 8011 alloy has good plastic deformation ability, its strength is generally between 110 and 130Mpa. The lower strength causes the aluminum foil to be prone to defects such as deformation and damage after being stamped into a lunch box. If the deformation ability is not enough, the thickness of the aluminum foil must be increased, resulting in material waste. [0004] 8006 alloy has become the first choice for the production of household aluminum foil due to...

AI Technical Summary

Problems solved by technology

[0026] The tensile strength of 8006 alloy for household aluminum can reach more than 125Mpa, but there are problems such as many production processes, long production cycle and high cost.

[0027] How to shorten the production process, reduce the production cycle, and reduce the cost on the basis of the above-mentioned preparation method is an important research topic for household aluminum foil, but no related reports have been seen so far.