Preparation method of aluminium alloy strip for stamping and stretch forming of cell phone shell

A technology of aluminum alloy belt and mobile phone case, applied in the field of aluminum alloy, can solve the problems of difficult to ensure the quality requirements of the surface of the mobile phone case, restricting the production capacity of aluminum alloy enterprises, unable to meet the needs of the mobile phone case, etc., and achieves the cost of raw materials. Inexpensive, improved surface quality, easy handling

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

The molding yield of mobile phone shells made of existing aluminum alloy grades is generally only 70-80%. The common problems are low yield, poor surface appearance quality, and casting defects such as streamline marks, spots, and looseness on the surface. , it is difficult to ensure the smooth and smooth surface quality requirements of the mobile phone shell, and it brings a great burden of surface renovation work, which seriously restricts the production capacity of aluminum alloy enterprises and increases the production cost
Products and methods in the prior art cannot meet the needs of mobile phone casings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing an aluminum alloy strip for stamping and deep-drawing forming of a mobile phone case, wherein the aluminum alloy is composed of the following components by weight percentage: 0.5% Si, 0.15% Fe, 0.03% Mn , 3.5% Mg, 0.01% Ce, 0.3% Ti and the rest of the Al composition, the preparation method comprises the following steps:

[0021] (1) Melting: According to the above-mentioned weight percentages of the elements in the aluminum alloy strip, weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-manganese master alloy, pure magnesium ingot, aluminum-cerium master alloy, aluminum-titanium master alloy and pure aluminum Then add the ingot into the gas reverberatory furnace, melt it into aluminum alloy melt under the condition of 760℃~780℃, then transfer the aluminum alloy melt into the resistance reverberatory furnace, and then transfer it to the standing furnace after degassing and slag removal. Stand still for 15 minutes to obtain th...

Embodiment 2

[0027] A method for preparing an aluminum alloy strip for stamping and deep-drawing forming of a mobile phone case, wherein the aluminum alloy is composed of the following components by weight percentage: 0.8% Si, 0.05% Fe, 0.08% Mn , 1.5% Mg, 0.08% Ce, 0.2% Ti and the rest of the Al composition; the preparation method comprises the following steps:

[0028] (1) Melting: According to the above-mentioned weight percentages of the elements in the aluminum alloy strip, weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-manganese master alloy, pure magnesium ingot, aluminum-cerium master alloy, aluminum-titanium master alloy and pure aluminum Then add the ingot into the gas reverberatory furnace, melt it into aluminum alloy melt under the condition of 760℃~780℃, then transfer the aluminum alloy melt into the resistance reverberatory furnace, and then transfer it to the standing furnace after degassing and slag removal. Stand still for 30 minutes to obtain th...

Embodiment 3

[0034] A method for preparing aluminum alloy strips for stamping and deep drawing forming mobile phone casings, wherein the aluminum alloy is composed of the following components by weight percentage: 0.6% Si, 0.08% Fe, 0.05% Mn , 2.0% Mg, 0.03% Ce, 0.22% Ti and the rest of the Al composition, the preparation method comprises the following steps:

[0035] (1) Melting: According to the above-mentioned weight percentages of the elements in the aluminum alloy strip, weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-manganese master alloy, pure magnesium ingot, aluminum-cerium master alloy, aluminum-titanium master alloy and pure aluminum Then add the ingot into the gas reverberatory furnace, melt it into aluminum alloy melt under the condition of 760℃~780℃, then transfer the aluminum alloy melt into the resistance reverberatory furnace, and then transfer it to the standing furnace after degassing and slag removal. Stand still for 20 minutes to obtain the s...

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Abstract

The invention discloses a preparation method of an aluminium alloy strip for the stamping and stretch forming of a cell phone shell. The preparation method comprises the following steps of: smelting, pouring, homogenizing annealing, hot rolling and cold rolling. By optimizing the alloying components, formulating and optimizing the homogenizing annealing technology after pouring and accurately controlling the temperatures of hot rolling and cold rolling, the performances of the designed alloy can be fully realized, namely the comprehensive mechanical property of the aluminium alloy strip is excellent, the room temperature tensile strength is 285-320MPa, the elongation rate is more than 25% and the cupping test value is more than 10nm. Therefore, the aluminium alloy strip can fully meet the use demand of the stamping and stretch forming of the cell phone shell.

Description

technical field [0001] The invention relates to the field of aluminum alloys, in particular to a method for preparing aluminum alloy strips for stamping and deep drawing forming of mobile phone casings. Background technique [0002] At present, with the improvement of living standards, people's demand for mobile phones has also increased to a very high level, which puts forward higher requirements for the appearance of corresponding mobile phones. Traditional plastic shell products are increasingly unable to meet people's needs. Demand, the metal shell mobile phone has a very strong metal texture, which can bring unparalleled visual impact. At the same time, it has the advantages of delicate hand feeling, wear resistance, drop resistance, and corrosion resistance. It is highly respected by consumers and represents high-end electronic products. direction of development. [0003] The metal materials used in the mobile phones with metal shells that have been adopted at present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22F1/047B21C37/02B21B37/74
Inventor 濮晓芳
Owner YONGXIN PRECISION MATERIAL WUXI
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