A kind of aluminum alloy sheet material for the appearance of electronic products and its production process

A technology for aluminum alloy sheets and electronic products, which is applied in the field of aluminum alloy sheet processing, can solve the problems of failing to meet the requirements of high-end electronic product appearance and yield rate, high cracking rate of ordinary aluminum alloys, and black lines on the surface, etc., to achieve metal Bright luster, high yield, effect of reducing grain size

Active Publication Date: 2020-03-31
广西百矿冶金技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the 6xxx alloys prepared by the prior art have defects such as orange peel, black lines on the surface, poor color and luster in the subsequent stamping process, and the common aluminum alloy has a high rate of edge cracking in the subsequent stamping process, which cannot meet the requirements of high-end electronic products for appearance and quality. Yield requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.3%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.45%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.

[0031] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:

[0032] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 720°C, keep it for 5 hours, degas and filter the molten aluminum for semi-continuous casting at 700°C , cooled to room temperature to obtain an aluminum alloy flat ingot with a thickness of 520mm;

[0033] (2) Homogenization heat treatment: heat the obtained aluminum alloy flat ingot to 530°C in a soaking furnace, keep it warm for 10 hours, and then carry out air...

Embodiment 2

[0043] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.4%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.55%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.

[0044] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:

[0045] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 760°C, keep it for 8 hours, and carry out semi-continuous casting at 720°C for the degassed and filtered aluminum liquid. To room temperature, the obtained aluminum alloy slab ingot with a thickness of 650mm;

[0046] (2) Homogenization heat treatment: place the obtained aluminum alloy flat ingot in a soaking furnace and heat it to 560°C, keep it warm for 20 hour...

Embodiment 3

[0056] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.32%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.52%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.

[0057] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:

[0058] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 745°C, keep it for 7 hours, and carry out semi-continuous casting at 710°C for the degassed and filtered aluminum liquid. To room temperature, the obtained aluminum alloy slab ingot with a thickness of 580mm;

[0059] (2) Homogenization heat treatment: heat the obtained aluminum alloy flat ingot to 545°C in a soaking furnace, keep it warm for 16 hours, and then ...

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Abstract

The invention provides an aluminum alloy plate for the appearance of an electronic product and a production process of the aluminum alloy plate, and belongs to the technical field of aluminum alloy plate processing. Chemical components of the aluminum alloy plate for the appearance of the electronic product comprises, by weight percent, 0.3%-0.4% of Si, not larger than 0.10% of Fe, not larger than0.05% of Cu, not larger than 0.05% of Mn, 0.45%-0.55% of Mg, not larger than 0.05% of Zn, not larger than 0.05% of Cr, not larger than 0.05% of Ti and the balance Al and inevitable elements. The production process of the 6082 aluminum alloy plate is further provided. According to the aluminum alloy plate produced through the production process, during later processing, the rear surface is free oforange peels and black lines, the metal luster is bright, and the rate of finished products is high.

Description

【Technical field】 [0001] The invention relates to the technical field of aluminum alloy plate processing, in particular to an aluminum alloy plate for the appearance of electronic products and a production process thereof. [0002] 【technical background】 [0003] The consumer electronics market has developed rapidly in recent years, and the replacement cycle of consumer electronics products such as notebook computers, tablet computers, and mobile phones is gradually shortening. In addition to product technological innovation, the appearance of various electronic products is gradually changing from plastic materials to Metal material conversion. Appearance parts of consumer electronic products require materials with high strength, bright color, stable size without deformation, thin wall, light weight, and good heat dissipation, in order to achieve protection, appearance, light weight, and heat dissipation. With the development of aluminum processing technology, aluminum alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22F1/047
CPCC22C21/08C22F1/002C22F1/047
Inventor 冯恩浪刘文宏秦颐鸣姜小龙赵茂密
Owner 广西百矿冶金技术研究有限公司
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