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Method for preparing high-strength and wear-resistant cast aluminum-silicon alloy from waste aluminum

A technology for casting aluminum-silicon alloys and aluminum-silicon alloys is applied in the field of aluminum alloy preparation to achieve the effects of reducing production costs, eliminating the harm of strength and plasticity, and improving strength

Active Publication Date: 2021-06-08
佛山市辰辉金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the preparation method of the existing cast aluminum-silicon alloy still needs to be improved and developed.

Method used

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  • Method for preparing high-strength and wear-resistant cast aluminum-silicon alloy from waste aluminum
  • Method for preparing high-strength and wear-resistant cast aluminum-silicon alloy from waste aluminum
  • Method for preparing high-strength and wear-resistant cast aluminum-silicon alloy from waste aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A method for preparing high-strength wear-resistant cast aluminum-silicon alloy by using waste aluminum, comprising the following steps:

[0071] (1) Choose aluminum-silicon alloy scraps that account for 75% of the total weight of raw materials, 15.1% aluminum-copper alloy scraps, 4.3% aluminum-magnesium alloy scraps, 2.6% aluminum-titanium alloy scraps, and 2.5% aluminum-iron alloy scraps Heating at 770 ℃ Melted into aluminum-silicon alloy liquid, the chemical composition and mass percentage of each raw material are as follows: The chemical composition and mass percentage of aluminum-silicon alloy waste are: Si17.02%, Cu 0.52%, Fe 0.37%, the balance is Al and inevitable Impurities, the individual content of impurities ≤ 0.05%, the total amount ≤ 0.15%; the chemical composition and mass percentage of aluminum-copper alloy waste are: Cu 9.08%, Fe 0.59%, Cr 0.28%, the balance is Al and inevitable impurities, impurities The individual content is ≤0.05%, and the total amoun...

Embodiment 2

[0078] A method for preparing high-strength wear-resistant cast aluminum-silicon alloy by using waste aluminum, comprising the following steps:

[0079] (1) Choose aluminum-silicon alloy scraps that account for 78% of the total weight of raw materials, 15% aluminum-copper alloy scraps, 3% aluminum-magnesium alloy scraps, 2% aluminum-titanium alloy scraps, and 1.3% aluminum-iron alloy scraps. Heat at 760 ℃ Melted into aluminum-silicon alloy liquid, the chemical composition and mass percentage of each raw material are as follows: The chemical composition and mass percentage of aluminum-silicon alloy waste are: Si 16.02%, Cu0.78%, Fe 0.24%, the balance is Al and unavoidable Impurities, the individual content of impurities is ≤0.05%, and the total amount is ≤0.15%; the chemical composition and mass percentage of aluminum-copper alloy waste are: Cu 4.02%, Fe 1.9%, Cr 0.30%, the balance is Al and inevitable impurities, impurities The single content is ≤0.05%, and the total amount is...

Embodiment 3

[0086] A method for preparing high-strength wear-resistant cast aluminum-silicon alloy by using waste aluminum, comprising the following steps:

[0087] (1) Select aluminum-silicon alloy scraps that account for 80% of the total weight of raw materials, 12% aluminum-copper alloy scraps, 4% aluminum-magnesium alloy scraps, 2% aluminum-titanium alloy scraps, and 1.3% aluminum-iron alloy scraps Heating at 780 °C Melted into aluminum-silicon alloy liquid, the chemical composition and mass percentage of each raw material are as follows: The chemical composition and mass percentage of aluminum-silicon alloy waste are: Si 17.8%, Cu0.4%, Fe 0.5%, the balance is Al and unavoidable Impurities, the individual content of impurities ≤ 0.05%, the total amount ≤ 0.15%; the chemical composition and mass percentage of aluminum-copper alloy waste are: Cu 9.0%, Fe 0.9%, Cr 0.2%, the balance is Al and inevitable impurities, impurities The single content is ≤0.05%, and the total amount is ≤0.15%; t...

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Abstract

The invention relates to a method for preparing a high-strength and wear-resistant cast aluminum-silicon alloy from waste aluminum, and belongs to the technical field of aluminum alloy preparation. According to the method, aluminum alloy waste serves as a main raw material to prepare the high-strength and wear-resistant cast aluminum-silicon alloy, the production cost of the cast aluminum-silicon alloy is reduced, and the cast aluminum-silicon alloy is prepared from, in percentage by mass, 12.02%-14.48% of Si, 1.22%-2.44% of Cu, 0.30%-0.66% of Mg, 0.22%-0.52% of Ti, 0.22%-0.65% of Fe, 0.012%-0.045% of Cr, 0.025%-0.051% of Ba, 0.01%-0.021% of Ni, 0.002%-0.005% of C, 0.01%-0.021% of B and the balance Al and inevitable impurities. The cast aluminum-silicon alloy has high strength and excellent wear resistance, and is suitable for casting and forming various aluminum alloy parts with high requirements on strength and wear resistance.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation, and in particular relates to a method for preparing high-strength wear-resistant cast aluminum-silicon alloy by using waste aluminum. Background technique [0002] Casting aluminum-silicon alloy has excellent casting fluidity, machining performance and wear resistance, and is widely used in automobiles, motorcycles, agricultural machinery, power tools and other fields to cast parts with complex shapes and structures, such as engine cylinder blocks, cylinder liners, Pistons, brake blocks, pulleys, gear pump bearings, etc. With the development of light weight in automobiles, motorcycles, agricultural machinery, electric tools, etc., parts and components are also developing in thin-walled and light-weighted parts. This requires cast aluminum-silicon alloys to have higher strength, plasticity and wear resistance, so that The problems of low strength, poor shape and insufficient we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/00C22C21/04C22C21/08C22C21/12C22F1/043
CPCC22C1/026C22C1/03C22C1/06C22C21/04C22F1/002C22F1/043C22C21/12C22C21/08C22C21/003C22C21/00
Inventor 付亚城王顺成蒙继海王辉
Owner 佛山市辰辉金属科技有限公司
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