Double zero aluminum foil with thickness of 0.004-0.0048 mm, and preparation method thereof

Abstract

The present invention relates to a double zero aluminum foil with a thickness of 0.004-0.0048 mm. The double zero aluminum foil has the following components, by weight, 0.38-0.45% of Fe, 0.10-0.15% of Si, less than or equal to 0.06% of titanium (Ti), less than or equal to 0.03% of copper (Cu), less than or equal to 0.03% of manganese (Mn), less than or equal to 0.03% of magnesium (Mg), less than or equal to 0.03% of zinc (Zn), less than or equal to 0.03% of vanadium (V), and the balance of aluminum (Al). The present invention further relates to a main production process for the double zero aluminum foil with the thickness of 0.004-0.0048 mm, wherein the production process comprises: smelting, casting rolling, cold rolling, intermediate annealing, cold rolling, rough rolling, medium rolling, double folding with a folding coiler, four folding with the folding coiler, four folding fine rolling, coil cutting, slitting, finished product annealing, and packaging.

Description

(1) Technical field [0001] The invention belongs to the technical field of aluminum foil processing, and in particular relates to a double-zero aluminum foil and a manufacturing method thereof. (2) Background technology [0002] Aluminum foil is mainly used as packaging material. The surface is required to be beautiful, bright, airtight, without damage to the surface, without defects such as oil spots and corrosion spots. The thickness of the aluminum foil is less than or equal to 0.2mm, generally 0.2-0.006mm. In addition to the general properties of aluminum foil rolling, the rolling force no longer plays an important role as the thickness is thinned. After the 0.5mm thick aluminum foil wool is rolled to 0.05mm, when it is rolled thinner, the upper and lower work rolls have already pressed against each other when they are running without load. After the aluminum foil bites in, the roll surfaces on both sides of the rolling are still partially or completely pressed agains...

AI Technical Summary

Problems solved by technology

Usually, two sheets of aluminum foil are overlapped and lubricated in the middle for rolling. Depending on the change of the friction state between the work roll and the rolled material, as the rolling speed increases, the amount of cooling lubricating oil increases, making the roll The lubrication state between the rolling material and the rolling material changes, the friction coefficient becomes smaller, the oil film becomes thicker, and the thickness of the aluminum foil decreases accordingly. This process is called a double rolling process, and this process can only produce 0.005-0.05mm aluminum foil. Aluminum foil, and for the double-zero aluminum foil with smaller thickness, the existing technology has created a bottleneck