Procedure heat treatment technique of soft aluminum alloy for anodic oxidation

Abstract

The invention discloses a procedure heat treatment technique of soft aluminum alloy for anodic oxidation. The technique comprises the following steps that (1) a soft aluminum alloy slab ingot is subjected to homogenization treatment at 450 DEG C firstly; (2) hot rolling is carried out, specifically, the slab ingot is rolled at 410-430 DEG C after homogenization treatment is completed, and the final rolling temperature is controlled to be 235-250 DEG C; (3) natural aging treatment is carried out, specifically, natural standing is carried out for 48 hours after hot rolling; and (4) cold rolling, cleaning and annealing are carried out after natural aging treatment is completed, and the annealing temperature is 340 DEG C. The technique is simple and suitable for industrial batch production, the product can meet the requirement for anodic oxidation treatment of various products, and by the adoption of the treatment technique, common 1090 aluminum alloy can achieve the high forming capacity and high brightness as foreign similar products with industrial high-purity aluminum as a parent material.

Description

technical field [0001] The invention belongs to the field of aluminum alloy processing, and in particular relates to a process heat treatment 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 mir...

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.

Images