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Wear-resistant and heat-resistant aluminum alloy material for mobile phone shell and preparation method thereof

A technology of aluminum alloy materials and mobile phone shells, applied in the field of aluminum alloys, can solve problems such as poor wear resistance and heat resistance, affecting the safety and service life of mobile phones, and achieve long service life, suppress segregation and anisotropy of the structure , The effect of reducing the formation of primary silicon and eutectic silicon

Inactive Publication Date: 2018-08-21
安徽酷米智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum alloy is often used as a mobile phone casing material due to its good processing performance, light specific gravity, and good corrosion resistance. However, at present, aluminum alloy materials for mobile phone casings have poor wear resistance and heat resistance, which affects the safety and service life of mobile phones.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell proposed by the present invention, its components include: Li: 0.65%, Mg: 2%, B: 0.04%, Zn: 0.15%, Mn: 0.4%, Si: 2.5%, Ti: 0.2%, Fe: 0.1%, Cu: 1.8%, Nb: 0.08%, Mo: 0.08%, Re: 0.04%, Ce: 0.06%, and the rest are Al and unavoidable impurities.

[0020] The invention also proposes a method for preparing a wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell, comprising the following steps:

[0021] S1. Put the raw materials into the smelting furnace according to their melting points from high to low for melting, leave to stand to remove impurities, and cast to obtain aluminum alloy ingots;

[0022] S2. Homogenize the aluminum alloy casting ingot, then perform hot extrusion treatment, and then perform aging treatment to obtain a wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell.

Embodiment 2

[0024] A wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell proposed by the present invention, its components include: Li: 0.9%, Mg: 1.2%, B: 0.1%, Zn: 0.32%, Mn: 0.25%, Si: 3.2%, Ti: 0.1%, Fe: 0.2%, Cu: 0.8%, Nb: 0.15%, Mo: 0.14%, Re: 0.01%, Ce: 0.12%, and the rest are Al and unavoidable impurities.

[0025] The invention also proposes a method for preparing a wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell, comprising the following steps:

[0026] S1. Put the raw materials into the smelting furnace according to the melting point from high to low for melting, and let stand to remove impurities. The stand temperature is 710°C for 28 minutes, and then cast at 680°C to obtain an aluminum alloy ingot;

[0027] S2. The aluminum alloy ingot was homogenized at 525°C for 4 hours, then cooled to 465°C for 8 hours at a cooling rate of 3°C / min, and then hot-extruded at 425°C with an extrusion ratio of 12. Then aging tre...

Embodiment 3

[0029] A wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell proposed by the present invention, its components include: Li: 0.8%, Mg: 1.5%, B: 0.08%, Zn: 0.25%, Mn: 0.32%, Si: 3%, Ti: 0.16%, Fe: 0.15%, Cu: 1.5%, Nb: 0.12%, Mo: 0.11%, Re: 0.02%, Ce: 0.09%, and the rest are Al and unavoidable impurities.

[0030] The invention also proposes a method for preparing a wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell, comprising the following steps:

[0031] S1. Put the raw materials into the smelting furnace according to the melting point from high to low for smelting, and let stand to remove impurities. The stand temperature is 715° C. for 25 minutes, and then cast at 685° C. to obtain aluminum alloy ingots;

[0032] S2. Place the aluminum alloy ingot at 535°C for 3.5 hours, then cool down to 475°C at a cooling rate of 4°C / min for 7 hours, and then hot-extrude at 415°C with an extrusion ratio of 16 , and aging treat...

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Abstract

The invention discloses a wear-resistant and heat-resistant aluminum alloy material for a mobile phone shell and a preparation method thereof. The ear-resistant and heat-resistant aluminum alloy material comprises the following components in percent by mass: 0.65-0.9% of Li, 1.2-2% of Mg, 0.04-0.1% of B, 0.15-0.32% of Zn, 0.25-0.4% of Mn, 2.5-3.2% of Si, 0.1-0.2% of Ti, 0.1-0.2% of Fe, 0.8-1.8% ofCu, 0.08-0.15% of Nb, 0.08-0.14% of Mo, 0.01-0.03% of Re, 0.05-0.1% of Ce and the balance of Al and unavoidable impurities. According to the wear-resistant and heat-resistant aluminum alloy materialfor the mobile phone shell and the preparation method thereof, provided by the invention, the wear-resistant and heat-resistant aluminum alloy material has good wear resistance, corrosion resistance,heat resistance, heat conductivity and mechanical properties, and has good falling resistance and plasticity and long service life.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a wear-resistant and heat-resistant aluminum alloy material for a mobile phone casing and a preparation method thereof. Background technique [0002] With the rapid development of communication technology, mobile phones have undergone several upgrades in just a few decades. As a powerful protective umbrella for the mobile phone, the mobile phone shell can effectively reduce the invasion of dust, reduce the damage caused by accidental drops, improve the service life of the mobile phone, and improve the user's product experience. Aluminum alloys are often used as mobile phone casing materials due to their good processing performance, light specific gravity, and good corrosion resistance. However, the current aluminum alloy materials used for mobile phone casings have poor wear resistance and heat resistance, which affects the safety and service life of mobile phones. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043C22C1/02
CPCC22C1/026C22C21/02C22F1/043
Inventor 金红祥
Owner 安徽酷米智能科技股份有限公司
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