Aluminium foil rolling technology

Abstract

The invention relates to an aluminium foil rolling technology including rough rolling, intermediate rolling, coiling, finish rolling, slitting, annealing and packaging. Conventional rolling oil is sprayed during rough rolling, intermediate rolling and finish rolling, and low-flash double-mixing oil is sprayed during coiling. In the coiling process of aluminium foil production, the low-flash double-mixing oil is adopted, so that interlayer friction coefficient generated by metal deformation during rolling can be reduced effectively, and pinholes of aluminium foil are decreased; more importantly, during the annealing technology, due to the characteristics of small distillation range and low predistillation and final distillation temperatures of the low-flash double-mixing oil, annealing and oil removal are facilitated, further annealing time is shortened, equipment utilization rate is increased greatly, and production cost is reduced.

Description

Technical field [0001] The invention relates to an aluminum foil rolling process and belongs to the technical field of aluminum material production technology. Background technique [0002] Aluminum foil production is an industry with high investment, high energy consumption and high cost. During the aluminum foil production process, because the aluminum foil billet is rolled, the metal deformation due to the rolling force and the high-speed rolling will produce a large friction force and a high temperature. It is necessary to add MOA-80 base oil (hereinafter referred to as Conventional rolling oil), plays the role of lubrication and cooling, so the rolling process requires high flash point of the rolling oil. At present, most domestic aluminum foil manufacturers use MOA-80 conventional rolling oil as the lubricating coating on the aluminum foil surface during the aluminum foil rolling and coiling process, but in the industry, the base oil used in the rolling process is called r...

AI Technical Summary

Problems solved by technology

During the rolling process of aluminum foil, the roughness of the bright side and the dark side of the aluminum coil is different, and the dark side is rougher than the bright side. ;Due to the high viscosity and wide distillation range of conventional rolling oil, it is not easy to volatilize during annealing, and the oil on the dark side and the bright side are different in adhesion. Usually, the oil on the bright side has been completely removed after a certain temperature and time, but the dark side There are still oil spots remaining, which affects the surface quality of the product and has a serious impact on subsequent reprocessing

At present, the conventional process solution to this problem is to use high-temperature annealing and prolong the annealing time, but if the temperature is increased or the time is prolonged to anneal the aluminum coil, the properties of the aluminum coil will change, making its elongation and tensile strength etc. Performance is reduced, affecting product quality, and this process has low efficiency, serious loss, high energy consumption, and poor economic benefits

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