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Preparation method of 1xxx/7xxx aluminium-alloy composite material

A composite material and aluminum alloy technology, applied in the field of preparation of 1xxx/7xxx aluminum alloy composite materials, can solve the problems of low anode yield, difficult anodization, poor color and luster, achieve uniform color and luster, improve anodization effect, hardness and high-strength effects

Active Publication Date: 2018-11-30
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high degree of alloying of 7xxx series aluminum alloys, especially the high content of Zn, the anodic oxidation of this series of alloys is difficult and the yield rate is low, and the overall effect of the anode is obviously inferior to that of 5xxx and 6xxx series aluminum alloys. Low yield, poor color, prone to anode material lines, black lines, white spots, film falling problems, etc., which are the main reasons why this series of alloys have not been widely accepted by the market so far

Method used

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  • Preparation method of 1xxx/7xxx aluminium-alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A 1xxx / 7xxx aluminum alloy composite material, including a core layer alloy and a cladding layer alloy, and the composition of the cladding layer alloy is composed of the following components in terms of mass percentage: Si 0.10%, Fe0.12%, Cu0.02%, Mn0.02% , Mg0.01%, Zn0.01%, Cr 0.007%, Zr 0.006%, the rest is composed of Al and unavoidable impurities; the mass percentage of each element in the core alloy is Si0.20%, Fe0.35%, Cu0.18%, Mn0.06%, Mg1.50%, Zn5.6%, Ti≤0.025%, Cr 0.005%, Zr 0.006%, the rest is composed of Al and unavoidable impurities; the 1xxx / 7xxx aluminum The preparation method of the alloy composite material, the operation steps are as follows:

[0023] (1) Preparation of core layer alloy and cladding layer alloy cast plate: batching according to the designed core layer and cladding layer alloy composition, after melting, degassing and filtering, the melting temperature is 710 ~ 760 ° C, through degassing and filtering The process reduces the hydrogen con...

Embodiment 2

[0028] When the 1xxx / 7xxx aluminum alloy composite material required by the customer is delivered as a coil, the operation of step (4) is: preheating and hot rolling: put the alloy cast plate welded in step (3) into the heating furnace for preheating, The heating temperature is 420°C, and the temperature is kept for 10 hours. After the heating is completed, it is taken out of the furnace and enters the rolling mill for hot rolling to a thickness of 5mm to obtain a composite coil. The composite coil is subjected to solid solution and quenching. The solution temperature is 450°C, kept for 60 minutes, and quenched for 100 minutes; Carry out aging, the aging temperature is 120°C, heat preservation for 24 hours, and air cooling after taking out the furnace, the finished product 1xxx / 7xxx aluminum alloy composite material is obtained, and the quality inspection, packaging, warehousing and delivery of the obtained finished product are carried out.

[0029] All the other operations are...

Embodiment 3

[0031](4) Preheating and hot rolling: put the welded alloy cast plate in step (3) into a heating furnace for preheating, the heating temperature is 420°C, and keep it warm for 10 hours. The final rolling temperature is controlled above 280°C to obtain composite coils. The composite coils are cold-rolled, re-coiled, cleaned and trimmed, and intermediate annealed. Roll, then solution quenching in air cushion furnace, solution temperature 450°C, speed 25m / mim, water quenching, and then aging, aging temperature 130°C, holding time 20 hours, out of the furnace and air cooling, to obtain 1xxx / 7xxx finished products with a width of 1200mm Aluminum alloy composite materials, quality inspection, packaging, warehousing and delivery of finished products.

[0032] All the other operations are the same as in Example 1.

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Abstract

The invention discloses a preparation method of a 1xxx / 7xxx aluminium-alloy composite material. The preparation method comprises the following steps of: (1) preparation of a core-layer alloy casting plate and a coating-layer alloy casting plate; (2) surface treatment: respectively carrying out surface treatment on the core-layer alloy casting plate and the coating-layer alloy casting plate obtained in the step (1); (3) welding fixation: carrying out welding fixation on the core-layer alloy casting plate and the coating-layer alloy casting plate after surface treatment in the step (2) accordingto a coating-layer / core-layer combined mode; (4) preheating and hot rolling: preheating the alloy casting plate welded in the step (3), carrying out hot-rolling bonding and following machining according to the thickness of a finished product after the heating is finished to obtaining a product. The preparation method disclosed by the invention has the beneficial effects that two layers of aluminium-alloy composite plates have the characteristics of high hardness and high strength, meanwhile the anodic oxidation effect of an electronic product is obviously improved, so that after the anode ofthe electronic product is oxidized and colored, the surface has metallic luster and is uniform in color.

Description

technical field [0001] The invention relates to a preparation method of an aluminum alloy composite material, in particular to a preparation method of a 1xxx / 7xxx aluminum alloy composite material. Background technique [0002] With the rapid development of electronic products, electronic products such as smart phones, tablet computers and digital cameras are required to develop in a light and thin direction. At the same time, higher requirements are put forward for the performance (such as strength) and aesthetics (such as anodized coloring) of electronic products. Substituting aluminum alloys for steel and plastic to prepare product appearance parts is the main solution chosen by most 3C electronics manufacturers for the above-mentioned development trends. At present, the widely used aluminum alloys include three series of alloy products: 5xxx, 6xxx, and 7xxx. : The 5xxx series alloys are the earliest to be used, and their anodic oxidation effect is good, but the hardness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/00B32B38/16B32B38/00C22C21/00C22C21/10C22F1/04C22F1/053
CPCB32B37/0076B32B38/0004B32B38/0036B32B38/162B32B2038/0048B32B2311/24B32B2457/00C22C21/00C22C21/10C22F1/002C22F1/04C22F1/053
Inventor 刘莹邓松云朱玉涛莫肇月莫灼强刘镇宽蒋长标
Owner 广西南南铝加工有限公司
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