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Aluminum alloy and preparation method thereof, and aluminum alloy structural member

A technology for aluminum alloys and structural parts, applied in the field of materials, can solve problems such as difficulty in meeting strength and heat dissipation requirements, general strength and thermal conductivity, and heat generation

Active Publication Date: 2022-03-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength and thermal conductivity of its die-casting products are average. The tensile strength is 230-250MPa, the yield strength is 160-190MPa, the elongation is <3%, and the thermal conductivity (that is, thermal conductivity) is 96W / m K. Deformation, heating and other problems, it is difficult to meet the strength and heat dissipation requirements of existing mobile phones, notebook computers and other products
[0003] Therefore, the current aluminum alloy related technology still needs to be improved.

Method used

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  • Aluminum alloy and preparation method thereof, and aluminum alloy structural member
  • Aluminum alloy and preparation method thereof, and aluminum alloy structural member
  • Aluminum alloy and preparation method thereof, and aluminum alloy structural member

Examples

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Embodiment 1

[0034] After calculating the ingredients, weigh each standard master alloy and metal element by weight, then obtain an ingot according to the aluminum alloy smelting preparation method provided below, and die-cast to obtain the aluminum alloy die-casting body A1 of the present invention. The weight content of its main elements is as follows: Table 1.

[0035] Aluminum alloy smelting preparation method:

[0036] Put the pure aluminum ingot and Al-Si master alloy into the crucible to melt the alloy and wait until it is completely melted. Put in Al-Cu master alloy, Al-Fe master alloy, Al-Mn master alloy, Al-Sr master alloy, Al-Sc master alloy, Al-Er master alloy, and continue heating until the master alloy is completely melted. Add pure Zn ingot until it is completely melted, control the temperature of the aluminum alloy liquid at 730-750°C, stir for 5-8 minutes, remove the scum on the surface of the aluminum liquid, then add pure Mg ingot, and pass through the protective gas un...

Embodiment 2

[0038] After calculating the ingredients, weigh each standard master alloy and metal element by weight, then obtain an ingot according to the aluminum alloy smelting preparation method provided in Example 1, and die-cast to obtain the aluminum alloy die-casting body A2 of the present invention, the weight content of its main elements As in Table 1.

Embodiment 3

[0040] After calculating the ingredients, weigh each standard master alloy and metal element by weight, then obtain an ingot according to the aluminum alloy smelting preparation method provided in Example 1, and die-cast to obtain the aluminum alloy die-casting body A3 of the present invention, the weight content of its main elements As in Table 1.

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Abstract

The invention provides an aluminum alloy, a preparation method thereof, and an aluminum alloy structural part. Based on the total mass of the aluminum alloy, in terms of mass percentage, the aluminum alloy includes: 9-12% Si; 8-11% Zn; 0.5‑1.5% Mg; 0.2‑0.8% Cu; 0‑0.6% Fe; 0.08‑0.25% Mn; 0‑0.10% Sr; ‑82.22% Al. The aluminum alloy has good strength, thermal conductivity and die-casting performance at the same time, which can meet the requirements for structural parts with high thermal conductivity and strength requirements, and is suitable for the manufacture of 3C product structural parts, automobile radiators, turbine disks, lighting equipment, etc. .

Description

technical field [0001] The invention relates to the technical field of materials, and in particular, to aluminum alloys, a preparation method thereof, and aluminum alloy structural parts. Background technique [0002] Die casting is one of the basic forming methods of aluminum alloy, which can be used for product design of complex structural parts. The most commonly used die-casting aluminum alloy is ADC12, which is an Ai-Si-Cu alloy for die-casting specified in Japanese Industrial Standard JISH5302. It has good material flow forming performance, large forming process window, and high cost performance. It has been widely used in aluminum alloy die-casting products. ADC12 has the advantages of low density and high specific lightness, and can be used for die-casting shells, small-sized thin-shaped or brackets, etc. However, the strength and thermal conductivity of its die-casting products are average. The tensile strength is 230-250MPa, the yield strength is 160-190MPa, the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/10C22C1/03
CPCC22C21/02C22C21/10C22C1/026C22C1/03B22D21/04
Inventor 杨阳郭强王孝东廖梦觉
Owner BYD CO LTD