A secondary aluminum grain refinement process and secondary aluminum treatment process

A technology for grain refinement and recycling of aluminum, applied in the field of aluminum alloys, can solve the problems of low stamping yield, impact on ride safety, and large impact on deformability, and achieve the effect of improving mechanical properties and improving yield

Active Publication Date: 2018-01-12
重庆顺博铝合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing aluminum alloy is used to prepare automobile body materials, the stamping yield is low, resulting in high production costs; at the same time, the automobile body materials made of it also have a large deformation during collision or rear-end collision, which affects driving safety and scratches. Scratches after wiping obviously affect the beauty of the car body and other shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The discarded pop cans are broken into 1cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 4m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.1T, and the iron filings are separated. Next, put the aluminum strip into 15% acetic acid solution for immersion for 3 minutes, then heat the aluminum strip to 80° C. and perform mechanical kneading.

[0048] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 3:1:1 while it is hot, and stir for 15 minutes. The mixture was stirred for 10 minutes, ultrasonically oscillated in deionized water for 30 minutes, and then dried at 110°C for 20 minutes.

[0049]Carry out batching then, carry out batching according to the weight ratio that composition accounts for total char...

Embodiment 2

[0054] The discarded pop cans are broken into 5cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 6m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.3T, and the iron filings are separated. Next, put the aluminum strip into 25% acetic acid solution for immersion for 1 min, then heat the aluminum strip to 120° C. and perform mechanical kneading.

[0055] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 8:4:3 while it is hot, and stir for 8 minutes, and then put it into the second mixture of absolute ethanol and ethyl acetate with a volume ratio of 10:3. The mixture was stirred for 5 minutes, ultrasonically oscillated in deionized water for 60 minutes, and then dried at 125°C for 20 minutes.

[0056] Then carry ...

Embodiment 3

[0061] The discarded pop cans are broken into 4cm-long strips of aluminum strips, and then passed through a wind separator for the first separation under the condition of a wind speed of 5m / s to separate light impurities. Then, through a magnetic separator, the second separation is carried out under the condition of a magnetic field strength of 0.2T, and the iron filings are separated. Next, put the aluminum strip into 20% acetic acid solution for immersion for 2 minutes, then heat the aluminum strip to 100° C. and perform mechanical kneading.

[0062] Add the kneaded aluminum strip to the first mixture of benzyl alcohol, acetic acid and turpentine with a volume ratio of 6:3:2 while it is hot, and stir for 10 minutes, then put it into the second mixture of absolute ethanol and ethyl acetate with a volume ratio of 5:2. The mixture was stirred for 8 minutes, ultrasonically oscillated in deionized water for 120 minutes, and then dried at 115°C for 18 minutes.

[0063] Carry out ...

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Abstract

The invention provides a secondary aluminum grain refinement process and a secondary aluminum treatment process and relates to the technical field of aluminum alloys. The secondary aluminum grain refinement process comprises the steps of (1) preparing a raw material and putting the raw material into a smelting furnace for smelting; (2) feeding molten aluminum filtered for the first time into a refining furnace through a flow guide chute, introducing inert gases at 1680-1800 DEG C, adding 0.1wt%-0.2wt% of Al-Ti-C refiner, conducting stirring under a vacuum condition, lowering the temperature to 1000-1250 DEG C at the speed of 50 DEG C per minute, adding 0.1wt%-0.2wt% of Al-Ti-C refiner, and then conducting secondary filtering; and (3) putting the molten aluminum into a pig casting machine to conduct ingot bar forming to obtain aluminum alloys. By means of the secondary aluminum grain refinement process, grains can be effectively refined, and the mechanical properties of alloys such as toughness and strength can be improved. The secondary aluminum treatment process including the recycled grain refinement process is easy to operate and friendly to environment and the quality of manufactured finished products is high.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a secondary aluminum grain refinement process and a secondary aluminum treatment process. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc or manganese, and the secondary alloying elements are nickel, iron, titanium, chromium or lithium. Aluminum alloy has good processability, especially hypoeutectic silicon-aluminum alloy, which not only has good processability, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, and good comprehensive mechanical properties of products, which can be used to make various forms of parts. Widely used in many fields. As the main material of auto parts, aluminum alloy is widely used in the manufacture of doors, windows and invisible parts in the body structure at home and abroad. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C21/02C22C1/02
CPCC22C1/026C22C1/06C22C21/02
Inventor 王增潮李新生罗乐
Owner 重庆顺博铝合金股份有限公司
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