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Hot rolling process for aluminum alloy for anodic oxidation

An anodizing and aluminum alloy technology, applied in metal rolling and other directions, can solve the problems of stagnant pace and increased investment risk of 1090 high-end anodized materials, achieving significant economic benefits, obvious product market competitiveness, and low production costs. Effect

Active Publication Date: 2017-05-24
XINJIANG JOINWORLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Hot rolling process for aluminum alloy for anodic oxidation
  • Hot rolling process for aluminum alloy for anodic oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Hot rolling of aluminum alloy (soft state) product for anodic oxidation

[0032] The hot-rolling equipment adopts domestic common single-stand hot-rolling mill. First, the soft 1090 aluminum alloy ingot (purity 99.90%) is homogenized at 450°C at low temperature. After holding for 8 hours, the low-temperature start rolling is carried out at 410-430°C. In the 17th pass, the temperature of the slab dropped to 350-370°C. At this time, a small reduction with a reduction rate of 7% was carried out, followed by an ultra-high reduction with a reduction rate of 45% in the 18th pass. Reduction; then continue to adopt the principle of equal reduction distribution for rolling, and control the speed in the 21st, 22nd and 23rd passes, and accurately control the temperature of the hot-rolled finished product within a specific range of 235-250°C. Under this thermal processing process, the elongation rate of the product can reach a level of ≥40%, and the product performance i...

Embodiment 2

[0035] Example 2 Hot rolling of aluminum alloy (hard state) products for anodic oxidation

[0036] The hot-rolling equipment adopts domestic common single-stand hot-rolling mill. First, the hard 1090 aluminum alloy ingot (purity 99.90%) is homogenized at 490°C at low temperature, and after holding for 8 hours, it is rolled at 440-460°C at a low temperature. In the 17th pass, the temperature of the slab dropped to 370-390°C. At this time, a small reduction with a reduction rate of 7% was performed, followed by an overpressure with a reduction rate of 45% in the following 18 passes. Then continue to adopt the distribution principle of equal reduction for plate and strip rolling, and control the rolling speed during the 21st, 22nd and 23rd three-pass rolling process, and accurately control the hot rolling finish temperature at 250~ 270°C range. Under this hot rolling process, the lightness and brightness of the final product after mirror rolling and anodizing can reach a level ...

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Abstract

The invention discloses a hot rolling process for aluminum alloy for anodic oxidation. The hot rolling process comprises the following steps that (1) homogenization heat preservation is conducted on an aluminum alloy plate ingot under the temperature of 450-490 DEG C; (2) after homogenization, rolling starting is conducted at the temperature of 410-460 DEG C with an equal rolling reduction distribution principle; (3) hot rolling is conducted till the temperature of the plate ingot is 350-390 DEG C, small-rolling-reduction rolling with the reduction rate of 7% is conducted once first, and then over-rolling-reduction rolling with the reduction rate of 45% is conducted once; and (4) after treatment of the step (3), rolling continues to be conducted with the equal rolling reduction distribution principle, and the finish rolling temperature is controlled to 235-270 DEG C. Through the hot rolling process, the forming ability of products machined by a common single-rack hot mill can completely reach the effect of a multi-rack hot continuous rolling mill, the hot rolling process is wide in practicability, the production and control difficulty and the cost are low, the product market competitiveness is obvious, and economic benefit is remarkable.

Description

technical field [0001] The invention belongs to the field of aluminum alloy processing, and in particular relates to a hot rolling process of 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 (Germ...

Claims

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Application Information

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IPC IPC(8): B21B1/06C22F1/04
CPCB21B1/06C22F1/04
Inventor 周树德
Owner XINJIANG JOINWORLD CO LTD
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