Method for preventing annealing oil stains of rolled aluminum materials

Abstract

The invention discloses a method for preventing annealing oil stains of rolled aluminum materials. Generally, after an aluminum alloy is rolled, oil stains are generated on the surface after annealingas rolling oil is left on the surface of a strip, in order to avoid the annealing oil stains, the rolled strip is washed to remove the residual oil on the surface before annealing, and the annealingoil stains are avoided. Through design of the rolling process and control over an oil product, the method of continuous rolling of the final two passes is adopted, the finishing roll temperature of the rolled strip is increased, viscosity of the rolling oil is controlled, oil on the surface of the strip is reduced, the annealing oil strains is avoided, and the method is a novel oil stain prevention production mode.

Description

technical field [0001] The invention belongs to the field of preparation of aluminum alloy strips, and in particular relates to a method for preventing annealing oil spots of rolled strips. Background technique [0002] During the rolling process of aluminum alloy, rolling oil needs to be used to lubricate the surface of the strip and the rolls. One is to reduce the rolling force, and the other is to prevent the roll from sticking to aluminum and damage the surface quality of the aluminum strip. In the modern rolling process, a certain amount of additives are generally added to the rolling oil (base oil). The additives have higher viscosity, better pressure resistance, and better adhesion, which can improve rolling, but at the same time It also leads to the problem of oil spots (rolling oil sintered on the surface of the strip after annealing) when the strip is annealed after rolling. [0003] At present, the prevention of annealing oil spots in China generally involves cle...

AI Technical Summary

Problems solved by technology

In the modern rolling process, a certain amount of additives are generally added to the rolling oil (base oil). The additives have higher viscosity, better pressure resistance, and better adhesion, which can improve rolling, but at the same time It also leads to the problem of oil spots (rolling oil sintered on the surface of the strip after annealing) when the strip is annealed after rolling

[0003] At present, the prevention of annealing oil spots in China generally involves cleaning before annealing to remove the rolling oil on the surface of the strip, which leads to the extension of the production cycle and also increases the production cost.

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