Hot rolling process for soft-state aluminum alloy for anodic oxidation

Abstract

The invention discloses a hot rolling process for a soft-state aluminum alloy for anodic oxidation. The hot rolling process comprises the following steps that 1, homogenized heat preservation is conducted on a soft-state aluminum alloy plate ingot for 8 hours at the temperature of 450 DEG C; 2, after homogenization is completed, rolling is conducted at the temperature of 410-430 DEG C on the basis of the allocation principle of the equal rolling reduction amount; 3, when hot rolling is conducted to the extent that the temperature of the plate ingot reaches 350-370 DEG C, small-reduction rolling with the reduction rate being 7% is conducted once in the first place, and subsequently, super-reduction rolling with the reduction rate being 45% is conducted once; and 4, after treatment as specified in step 3 is completed, rolling is conducted continuously on the basis of the allocation principle of the equal rolling reduction amount, and the finishing rolling temperature is controlled within the range of 235-250 DEG C. By means of the method, molding capacity of a product machined through a common single-rack hot rolling mill can completely achieve the effect of a multi-rack hot rolling mill; the hot rolling process is wide in practicability and low in production difficulty, control difficulty and cost; the product is obvious in market competitiveness; and remarkable economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy processing, and in particular relates to a hot rolling process of soft aluminum alloy for anodic oxidation. Background technique [0002] 1090 aluminum alloy for anodic oxidation is currently the highest grade aluminum alloy product widely used in the field of lighting decoration with industrial pure aluminum (aluminum purity ≥ 99.90%, generally not exceeding 99.93%) as the base material in the world. , which are divided into soft (including semi-soft) products for anodic oxidation and hard products for anodic oxidation, among which 1090 soft (including semi-soft) products for anodic oxidation, and 1090 reflectors for bright light reflectors (also domestic Referred to as reflector), the product is characterized by high brightness and high forming ability, and is widely used in indoor and outdoor and traffic lighting fields; while 1090 hard products for anodizing are represented by 1090 mirror panels ...

AI Technical Summary

Problems solved by technology

At present, domestic aluminum alloy products in the field of traffic lighting decoration are concentrated in the low-end 1070, 1050, 1060 and other grades of aluminum alloys, and the reflectivity is 60-70%. The processing methods of this type of products, except for DC (hot rolling ) processing methods, there is even CC (casting-rolling-rolling) rolling method of production, the absence of this core technology and the disorderly competition in the domestic market not only lead to an increase in investment risks for domestic enterprises to develop 1090 high-end anodic oxidation materials At the same time, it also caused the development of high-end anodized products in my country to stagnate.

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