Preparation method for cold rolls of super hardness wide width light gauge aluminum foils

Abstract

The invention relates to the technical field of cold rolls, in particular to a preparation method for cold rolls of super hardness wide width double-zero aluminum foils. The method particularly comprises the following steps: firstly, carrying out anneal process on a blank roll which is made of high chromium alloy materials in a forged mode, then carrying out rough turning process, thermal refining, semi fine turning process and heat treatment, and finally carrying out fine turning process on the blank roll to repair a die until a finished product is obtained. According to the preparation method for the cold rolls of the super hardness wide width double-zero aluminum foils, the high chromium alloy materials and a four-pillar sunken downwards type double-power-frequency heat treatment technology are adopted, the cold rolls are manufactured through full numerical control four-area temperature-controlled liquid nitrogen processing cryogenic treatment, the hardness of roll bodies of the cold rolls can reach 102-104 HSD, the depth of a hardening layer is larger than or equal to 25mm, uniformity of the hardness is within HSD+ / -0.5, length of roll faces exceeds 2300mm, high-grade wide width aluminum foils with width of the finished aluminum foils reaching 2300mm and thickness of 0.0065mm or below 0.0065mm can be rolled, and the preparation method is widely applied to industries such as cigarettes, food, medicine, electrons, photographic apparatuses and chemicals for daily use.

Description

technical field [0001] The invention relates to the technical field of cold rolling rolls, in particular to a preparation method of ultra-high hardness wide double-zero aluminum foil cold rolling rolls. Background technique [0002] With the development of social economy and the improvement of people's consumption level, the demand for double zero aluminum foil is increasing year by year. Double-zero aluminum foil is the best packaging material so far, it is non-toxic and tasteless, light-shielding and moisture-proof, corrosion-resistant, light in material, high barrier, anti-ultraviolet, easy to bend during deep processing and utilization, excellent in adhesion and heat sealing, It is widely used in industries such as cigarettes, food, medicine, electronics, photographic equipment and daily chemicals due to its excellent printing performance on the surface. [0003] More than 90% of the world's packaging aluminum foil is double-zero aluminum foil, with a thickness of 0.01m...

AI Technical Summary

Problems solved by technology

[0004] In view of the technical problem that the current domestic rolls cannot meet the technical problems of rolling double-zero six-five and below wide-width aluminum foils proposed in the background technology, a high-carbon, high-chromium, and added vanadium element with wear resistance, the carbon content is controlled at About 0.95%, the chromium content is more than 3.5%, the vanadium content is more than 0.25%, the roll surface length is 2300mm, and the preparation method of wide double zero aluminum foil cold rolling roll with excellent hardenability and hardenability

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