Process for producing electronic aluminium alloy from recycled aluminium

A production process and technology of aluminum alloy, applied in the field of metallurgy, can solve the problem of difficult to recycle aluminum to process high-end aluminum alloy products, and achieve the effect of improving ecological effect, reducing microscopic defects, and reducing hair and columnar crystals

Active Publication Date: 2020-04-17
SHANDONG INNOVATION METAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the current published achievements, it is still difficult to use recycled aluminum processing to obtain high-end aluminum alloy products that meet the requirements in the prior art

Method used

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  • Process for producing electronic aluminium alloy from recycled aluminium
  • Process for producing electronic aluminium alloy from recycled aluminium
  • Process for producing electronic aluminium alloy from recycled aluminium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A production process for producing electronic aluminum alloys by using recycled aluminum, comprising the following steps:

[0034] (1) Smelting: raise the temperature of the furnace to 690°C, put recycled aluminum and aluminum processing waste into the furnace for melting;

[0035] (2) Stirring and slag removal: continue to increase the temperature in the furnace to 825°C, stir for 13 minutes, and then stir again after standing for 8 minutes, stirring in a cycle-stand still for not less than 3 times, and then remove the scum on the surface of the aluminum liquid;

[0036] (3) Stand still: discharge the molten aluminum in the smelting furnace into the standing furnace, lower the temperature of the molten aluminum to 735°C, and let stand for 30 minutes;

[0037] (4) Sampling and testing: Sampling and analyzing the molten aluminum, and calculating the elements or intermediate alloys that need to be added according to the composition formula of the target aluminum alloy;

...

Embodiment 2

[0053] A production process for producing electronic aluminum alloys by using recycled aluminum, comprising the following steps:

[0054] (1) Smelting: raise the temperature of the furnace to 800°C, put recycled aluminum and aluminum processing waste into the furnace for melting;

[0055] (2) Stirring and slag removal: continue to increase the temperature in the furnace to 840°C, stir for 15 minutes, and then stir again after standing for 10 minutes, stirring in a cycle - standing for no less than 3 times, and then remove the scum on the surface of the aluminum liquid;

[0056] (3) Stand still: discharge the molten aluminum in the smelting furnace into the standing furnace, lower the temperature of the molten aluminum to 760°C, and let stand for 30 minutes;

[0057] (4) Sampling and testing: Sampling and analyzing the molten aluminum, and calculating the elements or intermediate alloys that need to be added according to the composition formula of the target aluminum alloy;

...

Embodiment 3

[0073] A production process for producing electronic aluminum alloys by using recycled aluminum, comprising the following steps:

[0074] (1) Smelting: raise the temperature of the furnace to 730°C, put recycled aluminum and aluminum processing waste into the furnace for melting;

[0075] (2) Stirring and slag removal: Continue to increase the temperature in the furnace to 830°C, stir for 14 minutes, and then stir again after standing still for 9 minutes. Stir in a cycle-stand still not less than 3 times, and then remove the scum on the surface of the aluminum liquid;

[0076] (3) Stand still: discharge the molten aluminum in the smelting furnace into the standing furnace, lower the temperature of the molten aluminum to 750°C, and let stand for 30 minutes;

[0077] (4) Sampling and testing: Sampling and analyzing the molten aluminum, and calculating the elements or intermediate alloys that need to be added according to the composition formula of the target aluminum alloy;

[...

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Abstract

The invention relates to the field of metallurgy, in particular to a process for producing electronic aluminium alloy from recycled aluminium. The process comprises the following steps of (1) smelting, (2) stirring and slagging off; (3) standing; (4) sampling analysis; (5) burdening; (6) degassing and refining; (7) alloy replenishing; (8) segregating modifier adding; (9) filtering and secondary sampling; and (10) ultrasonic casting. An aluminium alloy product comprises the following elements in percentage by mass: 0.3%-0.6% of Si, 0.5%-0.6% of Fe, 0.45%-1.32% of Mg, 0.12%-0.27% of Cu, 0.11%-0.13% of Mn, 0.10%-0.22% of Zn, 0.03%-0.13% of Cr, and the balance of Al and inevitable impurity elements. The recycled aluminium produced through the process can reach the performance index of the aluminium alloy for an electronic product, and has higher economy and higher environment-friendly value.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a production process for producing electronic aluminum alloys by utilizing recycled aluminum. Background technique [0002] 6xxx series aluminum-silicon alloy is a special brand of aluminum alloy products. This series of aluminum alloys has good formability, weldability and machinability, and can still maintain good operability after annealing. The alloy can be strengthened by heat treatment; its strength is medium, its corrosion resistance is excellent, the material is easy to polish and color, and it is not easy to deform after processing. Based on the above properties, 6082, 6063, 6061 and other grades of aluminum alloys in the 6xxx series aluminum alloys are widely used in products such as electronic and electromechanical equipment and casings. [0003] A large amount of processing waste will be generated during the forming of aluminum alloy products, and a large amount of recycled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/00C22C21/08C22B7/00
CPCC22B7/00C22C1/026C22C1/03C22C1/06C22C21/00C22C21/08Y02P10/20
Inventor 崔立新赵晓光吴胜利郑文超褚文科李士河成凯李明壮王志伟
Owner SHANDONG INNOVATION METAL TECH
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