Preparation method of magnesium alloy strip for cell phone shell

A mobile phone casing and magnesium alloy technology, applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of high elongation after fracture, coarse alloy grains, high ear-making rate, etc., and achieve plasticity and deep The effect of enhanced punching performance and uniform grain structure

Inactive Publication Date: 2012-02-15
YONGXIN PRECISION MATERIAL WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, one of the purposes of the present invention is to provide a method for preparing magnesium alloy strips for mobile phone casings, so as to solve the problem of low tensile strength of magnesium alloy strips used in mobile phone casings and the High elongation, high ear-making rate, it is difficult to meet the thinning and stretching punching molding requirements of the mobile phone case after the material is thinned, and the problems of coarse grains and uneven structure of the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a magnesium alloy strip for a mobile phone casing, wherein the magnesium alloy is composed of the following components by mass percentage: 2% Al, 0.8% Si, 0.7% Cu, 1.0% Mn, 0.1% Zn, 0.3% Ti, the balance is Mg and unavoidable impurities;

[0017] The preparation method is carried out as follows:

[0018] (1) Take magnesium-silicon master alloy, magnesium-copper master alloy, magnesium-manganese master alloy, magnesium-zinc master alloy, magnesium-titanium master alloy and pure aluminum ingot and pure magnesium ingot respectively according to the above-mentioned composition, then add in the melting furnace, Melt magnesium alloy melt under vacuum condition of 700℃~740℃, after degassing, refining and slag removal, transfer to static furnace and let it stand for 15min to obtain smelted magnesium alloy melt; the obtained magnesium alloy melt After being filtered by a ceramic filter, it is cast into a magnesium alloy ingot;

[0019] (2) Place the obtai...

Embodiment 2

[0024] A method for preparing a magnesium alloy strip for a mobile phone casing, wherein the magnesium alloy is composed of the following components by mass percentage: 4.5% Al, 0.5% Si, 1.2% Cu, 0.5% Mn, 0.8% Zn, 0.2% Ti, the balance is Mg and unavoidable impurities;

[0025] The preparation method is carried out as follows:

[0026] (1) Take magnesium-silicon master alloy, magnesium-copper master alloy, magnesium-manganese master alloy, magnesium-zinc master alloy, magnesium-titanium master alloy and pure aluminum ingot and pure magnesium ingot respectively according to the above-mentioned composition, then add in the melting furnace, Melt magnesium alloy melt under vacuum conditions of 700°C to 740°C. After degassing, refining, and slag removal, transfer it to a static furnace and let it stand for 30 minutes to obtain a smelted magnesium alloy melt; the obtained magnesium alloy melt After being filtered by a ceramic filter, it is cast into a magnesium alloy ingot;

[0027...

Embodiment 3

[0032] A method for preparing a magnesium alloy strip for a mobile phone casing, wherein the magnesium alloy is composed of the following components by mass percentage: 3.0% Al, 0.7% Si, 0.9% Cu, 0.7% Mn, 0.5% Zn, 0.25% Ti, the balance is Mg and unavoidable impurities;

[0033] The preparation method is carried out as follows:

[0034] (1) Take magnesium-silicon master alloy, magnesium-copper master alloy, magnesium-manganese master alloy, magnesium-zinc master alloy, magnesium-titanium master alloy and pure aluminum ingot and pure magnesium ingot respectively according to the above-mentioned composition, then add in the melting furnace, Melt magnesium alloy melt under vacuum condition of 700℃~740℃, after degassing, refining and slag removal, transfer to static furnace and let it stand for 20min to obtain smelted magnesium alloy melt; the obtained magnesium alloy melt After being filtered by a ceramic filter, it is cast into a magnesium alloy ingot;

[0035] (2) Place the ob...

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Abstract

The invention discloses a preparation method of a magnesium alloy strip for a cell phone shell. The preparation method is characterized in that the magnesium alloy comprises the following components by weight percent: 2%-4.5% of Al, 0.5%-0.8% of Si, 0.7%-1.2% of Cu, 0.5%-1.0% of Mn, 0.1%-0.8% of Zn, 0.2%-0.3% of Ti and the balance of Mg and inevitable impurities. The preparation method comprises the following steps: smelting, performing homogenizing annealing, performing hot rolling and performing cold rolling. The tensile strength of the magnesium alloy strip is 190MPa-210MPa, the elongation at break is 8.0%-10.0%, and the earring rate is 2%-3%; and the magnesium alloy strip can meet the thin stretching and punching forming requirement of the cell phone shell.

Description

technical field [0001] The invention relates to the field of magnesium alloys, in particular to a method for preparing magnesium alloy strips for mobile phone casings. Background technique [0002] With the rapid development of the communication and media industry, the volume of mobile phones is gradually decreasing. It is an important way to reduce weight and miniaturization by reducing the wall thickness of the shell and improving the strength and hardness of the shell material. Products with traditional plastic shells are increasingly unable to meet people's needs. Mobile phones with metal shells have a strong metal texture, which can bring unparalleled visual impact. Corrosion and other advantages are highly respected by consumers and represent the development direction of high-end electronic products. [0003] Magnesium alloy has many excellent properties such as light weight, firmness, shock resistance and noise prevention, electromagnetic shielding and easy casting a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22F1/06B21B1/22B21B37/00
Inventor 濮晓芳
Owner YONGXIN PRECISION MATERIAL WUXI
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