High-strength die-casting alloy material for mobile phone middle plate and preparation method and application of high-strength die-casting alloy material

A technology of die-casting alloys and alloy materials, applied in the field of aluminum alloy high-pressure casting, which can solve the problems of increased wiring density, pad pitch, diameter reduction, size reduction, etc., to achieve high density, improve mechanical properties, and reduce pore content Effect

Active Publication Date: 2020-08-25
苏州慧金新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The amount of devices on the main board of 5G mobile phones will increase significantly, and the integration level will be greatly improved in a limited space. Increased linear density

Method used

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  • High-strength die-casting alloy material for mobile phone middle plate and preparation method and application of high-strength die-casting alloy material
  • High-strength die-casting alloy material for mobile phone middle plate and preparation method and application of high-strength die-casting alloy material
  • High-strength die-casting alloy material for mobile phone middle plate and preparation method and application of high-strength die-casting alloy material

Examples

Experimental program
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Embodiment 1-9

[0045] A high-strength die-casting alloy material for a mobile phone mid-plate, comprising the following components in mass percentage, and the balance being aluminum and unavoidable impurities.

[0046] Si: 4.0wt%-8.0wt%; Mg: 4.0wt%-8.0wt%; Mn: 0.4wt%-1.0wt%; Cu<4.0wt%; Zn<1.5wt%; Fe<0.5wt%; Ti< 0.25wt%; Sc<1.0wt%; Zr<0.5wt%, the sum of weight percentages of other impurities is controlled below 1.0wt%, and the balance is Al.

[0047] Table 1 is the content table of each element in the aluminum alloy of Examples 1-9 and the performance table of the middle plate of the mobile phone made therefrom

[0048]

[0049] The aluminum alloy materials described in the above embodiments are made into aluminum alloy ingots according to the following methods, and then made into the middle plate of the mobile phone. The process is as follows:

[0050] 1) Put the high-purity aluminum element into the heating furnace, heat it to 680°C, completely melt and keep it for 20 minutes;

[0051]...

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Abstract

The invention relates to a high-strength die-casting alloy material for a mobile phone middle plate and a preparation method and application of the alloy material. The alloy material comprises, by weight, 4.0%-8.0% of Si, 4. %-8.0% of Mg, 0.4%-1.0% of Mn, 4.0% of Cu, 1.5% of Zn, 0.5% of Fe, 0.25% of Ti, 1.0% of Sc, 0.5% of Zr, and the balance of Al, wherein the sum of the weight percentages of other impurities is controlled to be less than 1.0 %. Compared with the prior art, the high-strength die-casting alloy material and the preparation method thereof have the advantages that the tensile strength of the obtained mobile phone middle plate can reach 350-400 MPa, the yield strength can reach 250-300 MPa, and the elongation is 2.0%-4.0%.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy high-pressure casting, and relates to a high-strength die-casting alloy material, in particular to a preparation method and application of a high-strength die-casting alloy material for a mobile phone middle plate. Background technique [0002] At present, it is the period of rapid development of the 5G industry. With the development of 5G technology and the improvement of the supporting industrial chain, 5G mobile phones will become the mainstream of the future mobile phone market. The entire industry is optimistic about the wave of phone replacements brought about by 5G. The appearance of mobile phones has also changed from plastic casings to metal mobile phone casings 10 years ago, and then to non-metallic mobile phone casings. As a key component of the mobile phone, the middle board of the mobile phone must also keep pace with the times, and the materials used are the most important. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03B22D17/00
CPCC22C21/00C22C1/03C22C1/026B22D17/00
Inventor 周银鹏汪时宜陈曦胡安罗云斌赵华屈雪莲陈煜
Owner 苏州慧金新材料科技有限公司
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