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Aluminum alloy processing method for improving utilization rate of waste aluminum

A processing method and aluminum alloy technology, applied in the direction of improving process efficiency, etc., can solve the problems of low utilization rate of waste aluminum, achieve the effects of improving strength, being conducive to sustainable development, and reducing energy consumption

Inactive Publication Date: 2020-11-06
安徽百圣鑫金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in the process of aluminum alloy processing, the utilization rate of waste aluminum is still low.

Method used

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  • Aluminum alloy processing method for improving utilization rate of waste aluminum

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Effect test

Embodiment 1

[0015] An aluminum alloy processing method for improving the utilization rate of waste aluminum, comprising the following steps:

[0016] Process the recovered waste aluminum into aluminum ingots, then mix it with pure aluminum at a mass ratio of 0.33:0.60, add other alloying elements whose mass fraction accounts for 3.5% of the mixed aluminum material, and smelt it into aluminum alloy, the said 3.5% Other alloy elements are composed of the following elements in terms of mass percentage: 0.72% magnesium, 0.14% chromium, 0.31% iron, 0.20% manganese, 0.38% nickel, 0.16% tin, 0.40% copper, and 0.17% zinc %, the rest is silicon and unavoidable impurities; the obtained aluminum alloy is subjected to homogenization heat treatment, the annealing temperature is 550°C, the annealing time is 9 hours, the heating rate is 5.5°C / min, then water quenching and cooling to 220°C, air cooling to room temperature;

[0017] The aluminum alloy is smelted using multi-component mixed gas refining t...

Embodiment 2

[0022] An aluminum alloy processing method for improving the utilization rate of waste aluminum, comprising the following steps:

[0023] Process the recovered waste aluminum into aluminum ingots, then mix it with pure aluminum at a mass ratio of 0.34:0.65, add other alloying elements whose mass fraction accounts for 4.0% of the mixed aluminum material, and smelt it into aluminum alloy, the said 4.0% Other alloy elements are composed of the following elements in terms of mass percentage: 0.75% magnesium, 0.20% chromium, 0.33% iron, 0.22% manganese, 0.39% nickel, 0.18% tin, 0.43% copper, and 0.18% zinc %, the rest is silicon and unavoidable impurities; the obtained aluminum alloy is subjected to homogenization heat treatment, the annealing temperature is 552°C, the annealing time is 10 hours, the heating rate is 5.8°C / min, then water quenching and cooling to 225°C, air cooling to room temperature;

[0024] Aluminum alloy is smelted using multi-component mixed gas refining tech...

Embodiment 3

[0029] An aluminum alloy processing method for improving the utilization rate of waste aluminum, comprising the following steps:

[0030] Process the recovered scrap aluminum into aluminum ingots, then mix it with pure aluminum at a mass ratio of 0.35:0.70, add other alloying elements whose mass fraction accounts for 4.5% of the mixed aluminum material, and smelt it into aluminum alloy, the said 4.5% Other alloying elements are composed of the following elements in terms of mass percentage: 0.78% magnesium, 0.26% chromium, 0.35% iron, 0.24% manganese, -0.40% nickel, 0.20% tin, 0.45% copper, and 0.45% zinc 0.20%, the rest is silicon and unavoidable impurities; the obtained aluminum alloy is subjected to homogenization heat treatment, the annealing temperature is 555°C, the annealing time is 11 hours, the heating rate is 6.0°C / min, then water quenching and cooling to 230°C, wind Cool to room temperature;

[0031]Aluminum alloy is smelted by multi-component mixed gas refining te...

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Abstract

The invention relates to the technical field of waste aluminum recycling, and discloses an aluminum alloy processing method for improving the utilization rate of waste aluminum. The method comprises the following steps of: processing the recycled waste aluminum into an aluminum ingot, mixing the aluminum ingot with pure aluminum according to a mass ratio of (0.33-0.35): (0.60-0.70), adding other alloy elements accounting for 3.5-4.5% of the mixed aluminum material in percentage by mass, and smelting to obtain the aluminum alloy. The binding force between the waste aluminum and new aluminum isenhanced, the processability is upgraded, and the strength of the aluminum alloy is improved. According to the method disclosed by the invention, impurity removal and smelting are performed on the waste aluminum to remove harmful elements in the waste aluminum, so that the quality of the secondary aluminum is guaranteed; when the waste aluminum is used as a pure aluminum substitute for preparing the aluminum alloy, the result shows that the tensile strength of the aluminum alloy profile prepared by adding 30-35% of waste aluminum reaches 345-355MPa, the elongation reaches 11-16%, and the mechanical performance effect is superior to that of the aluminum profile prepared by adding alloy elements into pure aluminum; and moreover, the renewable utilization rate of the waste aluminum is improved, the production cost is reduced, the utilization rate of the waste aluminum can be improved, and the prepared aluminum alloy has extremely high strength and plasticity.

Description

technical field [0001] The invention belongs to the technical field of waste aluminum recovery and utilization, and in particular relates to an aluminum alloy processing method for improving the utilization rate of waste aluminum. Background technique [0002] As a renewable resource, waste aluminum is of great significance to the improvement of economic and social benefits. With the development of the economy, the status and role of aluminum and its alloys in the national economy are second only to steel, and their usage and scope are expanding day by day. Primary aluminum can no longer meet the needs of the society. On the one hand, bauxite is increasingly depleted, and on the other hand, aluminum smelting consumes a lot of energy, which aggravates the energy crisis. Therefore, it is particularly important to effectively recycle and utilize various waste materials and use scrapped parts in the aluminum processing industry. On the other hand, a large amount of energy is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22B7/00C22C21/06
CPCC22B7/003C22C1/026C22C21/06Y02P10/20
Inventor 郭世龙郭启军
Owner 安徽百圣鑫金属科技有限公司
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