Aluminium alloy for preparing mobile phone housing, and preparation method thereof

Abstract

The invention provides an aluminium alloy for preparing a mobile phone housing, and a preparation method thereof, and belongs to the field of aluminium alloys. The aluminium alloy comprises the following raw materials in percentage by weight: 2.5-4.5% of silicon, 1-1.8% of copper, 0.5-1.5% of iron, 0.2-0.4% of magnesium, 0.06-0.08% of boron, 0.04-0.09% of titanium, 0.04-0.08% of zirconium, 0.03-0.08% of vanadium, 0.01-0.02% of gadolinium, 0.01-0.02% of neodymium, 0.01-0.02% of samarium, 0.01-0.03% of lanthanum and the balance aluminium. The aluminium alloy is high in mechanical strength and heat-conducting property. The preparation method comprises the steps of sequentially carrying out ingot casting, hot extrusion, quenching and aging treatment according to the abovementioned formula to prepare the aluminium alloy. The preparation process is simple, and capable of effectively removing the internal stress of the alloy and enhancing the mechanical property of the alloy.

Description

technical field [0001] The invention relates to the field of aluminum alloys, and in particular to an aluminum alloy used for preparing a mobile phone casing and a preparation method thereof. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc or manganese, and the secondary alloying elements are nickel, iron, titanium, chromium or lithium. Aluminum alloy has good processability, especially hypoeutectic silicon-aluminum alloy, which not only has good processability, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, and good comprehensive mechanical properties of products, which can be used to make various forms of parts. Widely used in many fields. Electronic products usually require complex and precise structural parts, so die-casting aluminum alloys have become commonly used structural parts. [0003] With the d...

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Problems solved by technology

However, the thermal conductivity of this alloy is low, which leads to poor heat dissipation of the mobile phone, which affects the safety and service life of the mobile phone; at the same time, the aluminum alloy has a strong signal shielding effect, which will have a greater impact on the communication and networking of the mobile phone. influences

In the prior art, the method of reducing the thickness of the mobile phone shell is usually used to enhance the thermal conductivity and signal receiving ability. However, the protective effect of the mobile phone shell is reduced after the reduction of the mobile phone shell, and the mobile phone is easily damaged.

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