Aluminum alloy product and preparation method thereof

A technology for aluminum alloy and cast aluminum alloy, applied in the field of aluminum alloy products and their preparation, can solve problems such as hindering application, uneven stains or gray spots, restrictions, etc., and achieves the reduction of CNC time, CNC cost, and simple preparation method. Effect

Inactive Publication Date: 2015-07-15
SHENZHEN XINMAOXIN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while this method solves the requirements of structural design, it also brings new obstacles, that is, it hinders the personalized design requirements of product appearance and color.
The reason is that in order to ensure the castability of the alloy, the selected aluminum alloy usually contains a large amount of metallic silicon, but the presence of silicon directly leads to uneven stains or gray spots in the appearance parts used for die-casting during the anodizing process , there is no bright and consistent color on the surface of the shell, which hinders the application of this process on the appearance of 3C products
Inhibition of the application of the process in this type of product
On the other hand, because it is not suitable for the anodizing process, it also limits the combination of this type of die-casting products through the anodizing process and the nano-injection molding process, making the mechanism of this type of product not suitable for the production process combined with plastics. Designs that cannot meet the functional requirements of more complex electronic products
Therefore, the aluminum alloys used in the die-casting process are mostly die-casting aluminum alloys that do not contain silicon. However, due to the unavoidable defects of die-casting, it is also difficult to mass-produce anodized products with high appearance quality, which seriously restricts the application of die-casting technology. Appearance parts of electronic products

Method used

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  • Aluminum alloy product and preparation method thereof
  • Aluminum alloy product and preparation method thereof
  • Aluminum alloy product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Take the section as figure 1 6063 aluminum alloy profiles with a thickness of 4mm are used as inserts and put into die-casting molds;

[0034] (2) Melting in a graphite crucible, refining the die-casting aluminum alloy according to the proportioning composition in Table 1, degassing and slag removal, etc., the refining temperature is 700°C, the refining time is 30 minutes, and the refined alloy is injected into the die-casting chamber , and then cast into a mold to form the aluminum alloy product of the present invention, such as figure 2 Show.

[0035] The outer surface of the die casting is machined and polished.

[0036] Anodizing treatment: after degreasing the aluminum alloy products, neutralize the workpiece with lye, put the pre-treated aluminum alloy products into the anode tank solution, the sulfuric acid concentration is 200g / L, and the voltage is controlled at 13V and 20°C Electrolyze for 25 minutes, wash and dry; use a film thickness meter to measure...

Embodiment 2

[0042] The difference from the example is that the insert is made of 5052 aluminum alloy with a coefficient of linear expansion of 22.9×10 -6 K -1.

[0043] The prepared aluminum alloy product has no visible cracks and joint gaps.

Embodiment 3

[0045] The difference from Example 1 is that the die-casting aluminum alloy has the alloy composition in Table 1, and the coefficient of linear expansion is: 23×10 -6 K -1 .

[0046] The prepared aluminum alloy product has no visible cracks and joint gaps.

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Abstract

The invention discloses an aluminum alloy product. A sheet material or section bar obtained through extrusion molding is subjected to machining so as to prepare a mosaic aluminum alloy which is applied to the appearance surface of a product; and a die casting aluminum alloy is obtained by using a die casting molding technology, and an inner structure except an outer shiny surface. The invention further provides a preparation method for the aluminum alloy product. The aluminum alloy product can undergo high-quality anodization decoration and nanometer injection molding. The preparation method is simple and has low cost.

Description

Technical field: [0001] The invention relates to the technical field of metal materials and composite molding of metal materials, in particular to an aluminum alloy product and a preparation method thereof. Background technique: [0002] The increasing demand for individualization of 3C electronic products has played an increasingly important role in the market competitiveness of products. Such as shape design, light weight, color and so on. However, personalized needs will inevitably lead to complex and difficult manufacturing processes. How to achieve lightweight and high strength at the same time, and can be molded at one time is becoming more and more important for the structural parts of electronic products with complex structures. [0003] The existing manufacturing method of the appearance parts of the shell of the electronic device is to process the aluminum plate, and then carry out anodic oxidation and coloring treatment. However, due to the increasingly complex s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B22D19/16
Inventor 刘秋华
Owner SHENZHEN XINMAOXIN IND CO LTD
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