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Aluminum alloy casting and preparation method

A technology of aluminum alloy castings and alloys, applied in the field of aluminum alloy castings and preparation, can solve the problems of large proportion of aluminum-silicon alloys, general mechanical properties, inability to meet the requirements of electronic and electrical product materials, etc., and achieve tensile strength and hardness. high effect

Active Publication Date: 2022-06-21
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing die-casting aluminum alloys, aluminum-silicon alloys and aluminum-silicon-copper alloys are common. Among them, aluminum-silicon alloys account for a large proportion. Generally, aluminum-silicon alloy castings have good die-casting performance, but their mechanical properties are average, which cannot meet the requirements of electronic and electrical products for their materials. Therefore, the present invention proposes an aluminum alloy casting and its preparation method, which improves the mechanical properties of the material

Method used

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  • Aluminum alloy casting and preparation method
  • Aluminum alloy casting and preparation method
  • Aluminum alloy casting and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Example 1. Preparation of rapidly solidified Al-Mn-B alloy

[0045] The pure aluminum is heated to melting under the protection of argon, and Mn blocks and B rods are added in sequence, and the added amounts are: Mn: 65%, Al: 25%, B: 10%, and the temperature is raised to 1500 ° C after complete melting. , and then pressurize the alloy melt to 2.5MPa and spray it into a water-cooled copper mold with a diameter of 10mm for continuous cooling, and the cooling rate is 10 3 After ℃ / s, it is rapidly cooled to obtain a rapidly solidified Al-Mn-B alloy, and the alloy is pulverized to a particle size of 0.5 mm for use.

Embodiment 2

[0046] Example 2 Preparation of rapidly solidified Al-Mn-B alloy

[0047] The pure aluminum is heated to melting under the protection of argon, and Mn blocks and B rods are added in sequence, and the added amounts are: Mn: 65%, Al: 25%, B: 10%, and the temperature is raised to 1500 ° C after complete melting. , and then pressurize the alloy melt to 5MPa and spray it into a water-cooled copper mold with a diameter of 10mm for continuous cooling, and the cooling rate is 10 5 After ℃ / s, it is rapidly cooled to obtain a rapidly solidified Al-Mn-B alloy, and the alloy is pulverized to a particle size of 5 mm for use.

Embodiment 3

[0048] Example 3 Preparation of rapidly solidified Al-Mn-B alloy

[0049] The pure aluminum is heated to melting under the protection of argon, and Mn blocks and B rods are added in sequence, and the added amounts are: Mn: 65%, Al: 25%, B: 10%, and the temperature is raised to 1500 ° C after complete melting. , and then the alloy melt was sprayed into a water-cooled copper mold with a diameter of 10mm under pressure of 4MPa for continuous cooling, and the cooling rate was 10 5 After ℃ / s, it is rapidly cooled to obtain a rapidly solidified Al-Mn-B alloy, and the alloy is pulverized to a particle size of 5 mm for use.

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Abstract

The invention relates to an aluminum alloy casting and a preparation method. The aluminum alloy casting comprises, by mass, 5%-20% of Zn, 5%-10% of Mg, 6%-10% of Si, 5.5%-8% of Cu, 0.1%-0.25% of B, 1.15%-2.11% of Mn, 0.1%-1.2% of Y and the balance Al. The preparation method comprises the following steps: melting aluminum, manganese and boron, pressurizing, quickly cooling to prepare an intermediate alloy, melting pure aluminum, an AlMn alloy, an AlSi alloy, an AlCu alloy, an AlMg alloy, an AlY alloy and pure Zn, mixing with the intermediate alloy, and carrying out pressure casting to obtain the aluminum alloy casting. The method can be applied to the fields of electronic, electrical and mechanical parts.

Description

technical field [0001] The present invention relates to metal alloys and preparation methods, in particular to aluminum alloy castings of electrical, electronic and mechanical components and preparation methods. Background technique [0002] Electronic products such as laptops, mobile phones, etc. have an increasing demand for more deformation-resistant and high-strength materials in terms of appearance and function. In particular, some complex structural parts require lightweight and high-strength materials. Therefore, high-strength and light-weight aluminum alloys are developed. Demand keeps growing. [0003] Among the existing die-casting aluminum alloys, aluminum-silicon alloys and aluminum-silicon-copper alloys are common, among which aluminum-silicon alloys account for a large proportion. Generally, aluminum-silicon alloy castings have good die-casting performance, but general mechanical properties, which cannot meet the requirements of electronic and electrical produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C21/08C22C21/02C22C1/03B22D17/00
CPCC22C21/10C22C21/08C22C21/02C22C1/026C22C1/03B22D17/00
Inventor 欧阳春简刚申奥汪海斌
Owner JIANGSU UNIV OF SCI & TECH