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A kind of high-strength aluminum alloy for structural parts of electronic products and preparation method thereof

An electronic product and high-strength technology, applied in the field of aluminum alloys, can solve the problems of difficult toughness, low mechanical strength of castings, poor material fluidity, etc., achieve high flatness and mechanical strength, excellent resistance to deformation, and excellent casting effect of ability

Active Publication Date: 2016-03-02
SHENZHEN XINMAOXIN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional magnesium, aluminum, zinc, and copper alloys have been difficult to meet the needs of the development of electronic products due to some characteristics of the materials themselves. For example, although magnesium alloys have the characteristics of light weight and high specific strength, their toughness, corrosion resistance and casting The ability is relatively poor, and it is difficult to manufacture thin-walled parts with a wall thickness of less than 0.6mm and products with high toughness; although ordinary aluminum alloys have good corrosion resistance and can be surface-treated with rich colors, the mechanical properties of castings Low strength, poor material fluidity, difficult to produce thin-walled parts, and the flatness of the thin-walled parts produced is low; although zinc alloy has excellent casting performance, but the material has low strength and poor corrosion resistance, it is difficult to be used in the manufacture of corrosion-resistant high-strength structures Although copper alloy has high strength and good corrosion resistance, it has the characteristics of poor casting ability, high material cost, low product precision and poor consistency

Method used

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  • A kind of high-strength aluminum alloy for structural parts of electronic products and preparation method thereof
  • A kind of high-strength aluminum alloy for structural parts of electronic products and preparation method thereof
  • A kind of high-strength aluminum alloy for structural parts of electronic products and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Alloy proportioning is carried out according to Al61Zn30Si6Cu2.8Ti0.1Ce0.1 alloy composition, wherein copper, silicon, titanium, and rare earth elements are proportioned in the form of AlCu, AlSi, AlTi, AlCe, and other elements are proportioned in the form of pure metals Ratio, raw material purity is greater than 99%.

[0038] Put the proportioned raw materials into the resistance melting furnace for smelting. The smelting temperature is 800°C, and they are fully stirred and mixed. After the smelting is completed, the temperature of the melting soup is adjusted to 750°C.

[0039] Using a die-casting machine, the above-mentioned alloy melt is die-cast into a metal mold to obtain such figure 1 For the sample shown, the overall size of the product is 150mm×100mm×6mm, the thickness of the thin plate in the center part is 1mm, and the plane of the casting is subjected to one anti-deformation shaping.

[0040] The samples were tested for Vickers hardness, elongati...

Embodiment 2

[0041] Example 2: Alloy proportioning is carried out according to Al75Zn14Si8Cu2.8Ti0.1Ce0.1 alloy composition, wherein copper, silicon, titanium, and rare earth elements are proportioned in the form of AlCu, AlSi, AlTi, AlCe, and other elements are proportioned in the form of pure metals Ratio, raw material purity is greater than 99%.

[0042] Put the proportioned raw materials into the electric resistance melting furnace for smelting, the smelting temperature is 800°C, and fully stir and mix. After the smelting is completed, adjust the temperature of the melting soup to 750°C.

[0043] Using a die-casting machine, the above-mentioned alloy melt is die-cast into a metal mold to obtain such figure 1 For the sample shown, the overall size of the product is 150mm×100mm×6mm, the thickness of the thin plate in the center part is 1mm, and the plane of the casting is subjected to one anti-deformation shaping.

[0044] The samples were tested for Vickers hardness, elongation and fla...

Embodiment 3

[0045] Example 3: Alloy proportioning is carried out according to Al61Zn30Si6Cu2.8Ti0.1Ce0.1 alloy composition, wherein copper, silicon, titanium, and rare earth elements are proportioned in the form of AlCu, AlSi, AlTi, AlCe, and other elements are proportioned in the form of pure metals Ratio, raw material purity is greater than 99%.

[0046] Put the proportioned raw materials into the electric resistance melting furnace for smelting, the smelting temperature is 800°C, and fully stir and mix. After the smelting is completed, adjust the temperature of the melting soup to 750°C.

[0047] Using a die-casting machine, the above-mentioned alloy melt is die-cast into a metal mold to obtain such figure 1 For the sample shown, the overall size of the product is 150mm×100mm×6mm, and the thickness of the central part of the thin plate is 1mm. Then the sample is subjected to heat treatment at 180°C for 30 minutes. After heat treatment, the hardness of the material is reduced from 150Hv...

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Abstract

The invention discloses a kind of high-strength aluminum alloy for an electronic product structural component and a preparation method therefor. The high-strength aluminum alloy structural component employs pressure casting molding and the aluminum alloy contains elements of aluminum, zinc and silicon. The hardness is more than 110HV5 and the elongation is more than 1%. The preparation method is as follows: raw materials according to certain ratios are placed in a resistance furnace and smelted, and the smelting temperature is 700-850 DEG C; the raw materials are stirred and mixed fully; after the smelting is finished, the temperature of the molten soup is adjusted to 600-800 DEG C; the alloy molten liquid is subjected to pressure casting into a metal die by utilization of a pressure casting machine, and the high-strength aluminum alloy sample is obtained; the obtained high-strength aluminum alloy is subjected to heat treatment or / and natural aging strengthening treatment. The high-strength aluminum alloy has advantages of excellent castability, high mechanical strength, stable size and the like. The alloy material is suitable for preparing product structural components with a wall thickness of being less than 0.6mm and with high precision, high intensity and high planeness, especially electronic product structural components.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength aluminum alloy suitable for manufacturing structural parts of electronic products and a preparation method thereof. Background technique [0002] With the development of electronic products in the direction of miniaturization, intelligence and light weight, higher and higher requirements are put forward for the structural parts of electronic products. Traditional magnesium, aluminum, zinc, and copper alloys have been difficult to meet the needs of the development of electronic products due to some characteristics of the materials themselves. For example, although magnesium alloys have the characteristics of light weight and high specific strength, their toughness, corrosion resistance and casting The ability is relatively poor, and it is difficult to manufacture thin-walled parts with a wall thickness of less than 0.6mm and products with high toughness; al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10B22D17/00
Inventor 刘秋华
Owner SHENZHEN XINMAOXIN IND CO LTD