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Aluminium alloy and preparation method thereof

An aluminum alloy, total amount of technology, applied in the field of aluminum alloy and its preparation, can solve the problems of unsatisfactory fluidity of alloy casting characteristics, difficulty in producing thin-walled products, etc., and achieve good casting performance, good toughness, and no cracks

Inactive Publication Date: 2015-11-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above-mentioned aluminum alloys have greatly improved the performance of the alloy, the casting characteristics of the alloy, especially the fluidity, are still not ideal, and it is difficult to produce thin-walled products

Method used

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  • Aluminium alloy and preparation method thereof
  • Aluminium alloy and preparation method thereof
  • Aluminium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] 1. Ingredients

[0066] 1) Raw materials: according to the alloy composition, prepare pure aluminum ingots (purity ≥ 99.9% by weight), pure magnesium ingots (purity ≥ 99.9% by weight), pure zinc ingot (purity ≥ 99.9% by weight), Al-Si master alloy and Al-Cu master alloy;

[0067] 2) Flux: Covering agent is LFG-J00, refining agent is JL-J301, modifier is LBZ-J0K.

[0068] Relative to 100 parts by weight of the raw material, the amount of the covering agent is 0.01 part by weight, the amount of the refining agent is 0.01 part by weight, and the amount of the modificator is 0.01 part by weight.

[0069] 2. Dry

[0070] The prepared raw materials are dried, wherein Al, Mg and Zn are dried at a temperature of 100°C±10°C, and the Al-Si master alloy and the Al-Cu master alloy are dried at a temperature of 150°C±10°C.

[0071] 3. Melting

[0072] First, coat the coating agent on the inner wall of the crucible, then preheat it to 200-250°C, put the weighed pure aluminum ingo...

Embodiment 2

[0081] The aluminum alloy was prepared by the same method as in Example 1, except that the alloy composition was: Al83.5Si4Zn8Cu2.5Mg2. The tensile properties, hardness and fluidity test results of the obtained aluminum alloys are listed in Table 1.

Embodiment 3

[0083] The aluminum alloy was prepared by the same method as in Example 1, except that the alloy composition was: Al84.5Si3Zn8Cu2.5Mg2. The tensile properties, hardness and fluidity test results of the obtained aluminum alloys are listed in Table 1.

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Abstract

An aluminum alloy contains 3-7wt％of Si, 5-10wt％of Zn, 1-5wt％of Cu, 1-3wt％of Mg, 0-0.3wt％of a rare earth element, 0-1wt％of an additional element, and 73.7-90wt％of Al. The additional element is at least one selected from a group consisted of Ti, Zr, Mn, Fe, Cd, Cr, B, Bi, Ni and Sr. A method of preparing the aluminum alloy is also provided.

Description

technical field [0001] The invention relates to an aluminum alloy and a preparation method thereof. Background technique [0002] As the main structural material of the national economy, aluminum alloy has many characteristics such as low density, high strength, easy forming, good electrical and thermal conductivity, and rich resources. It is the most widely used non-ferrous metal structural material in the national economy. It has been widely used in aviation, aerospace, transportation, building materials, petroleum, chemical industry, electronics, electric power, national defense and other fields. [0003] With the rapid development of my country's economic construction, especially the rapid development of pillar industries such as automobiles, electronics, and machinery in recent years, higher and higher requirements have been put forward for the material properties and casting characteristics of aluminum alloys. Especially in the field of consumer electronics, with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10
CPCC22C21/10C22C21/02C22F1/053
Inventor 张法亮菅永喜李绍青
Owner BYD CO LTD
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