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Regeneration preparation method for copper-containing aluminium alloy through aviation industry aluminium alloy waste materials

A technology of aviation industry and aluminum alloy, which is applied in the field of circular economy technology and environmental protection, to achieve the effect of saving recycling cost, high use value, and easy industrial application

Active Publication Date: 2020-02-07
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen that the existing recycling technology focuses on the removal of certain types of alloy elements from aviation aluminum alloy waste, and has not yet involved in the regeneration of aluminum alloy products.

Method used

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  • Regeneration preparation method for copper-containing aluminium alloy through aviation industry aluminium alloy waste materials
  • Regeneration preparation method for copper-containing aluminium alloy through aviation industry aluminium alloy waste materials
  • Regeneration preparation method for copper-containing aluminium alloy through aviation industry aluminium alloy waste materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take a proper amount of paint stripping treatment and simply melt the aviation aluminum alloy waste. After ICP-OES detection, the main alloy components of the original aluminum alloy are shown in Table 2.

[0040] According to the composition requirements of the target alloy 2024 aluminum alloy, pure copper with a mass fraction of 0.8% was weighed and added to the mixed alloy.

[0041] Put the material into a high-purity graphite crucible, vacuumize the induction furnace until the internal pressure is lower than 30Pa, heat and melt in the induction furnace with a built-in graphite condensation plate, and the temperature is 780 °C. Control the frequency of the induction furnace to realize the stirring of the melt. During this process, zinc and magnesium leave the aluminum alloy melt in the form of steam, and volatilize and condense on the condensation plate placed on the upper part of the melt.

[0042] After 60 minutes, the aluminum alloy solution is filtered with a cera...

Embodiment 2

[0047] Take a proper amount of paint stripping treatment and simply melt the aviation aluminum alloy waste. After ICP-OES detection, the main alloy components of the original aluminum alloy are shown in Table 3.

[0048] According to the composition requirements of the target alloy 2014 aluminum alloy, the copper-magnesium alloy with a mass fraction of 2.5% was weighed and added to the mixed alloy.

[0049] Put the material into a high-purity graphite crucible, evacuate the induction furnace until the internal pressure is lower than 25Pa, heat and melt in the induction furnace with a built-in graphite condensation plate, and the temperature is 900 °C. Control the frequency of the induction furnace to realize the stirring of the melt. During this process, zinc and magnesium leave the aluminum alloy melt in the form of steam, and volatilize and condense on the condensation plate placed on the upper part of the melt.

[0050] After 120 minutes, the aluminum alloy solution was fi...

Embodiment 3

[0055] Take a proper amount of paint stripping treatment and simply melt the aviation aluminum alloy waste. After ICP-OES detection, the main alloy components of the original aluminum alloy are shown in Table 4.

[0056] According to the composition requirements of the target alloy 2219 aluminum alloy, the copper-chromium alloy with a mass fraction of 3.0% was weighed and added to the mixed alloy.

[0057] Put the material into a high-purity graphite crucible, evacuate the induction furnace until the internal pressure is lower than 10Pa, heat and melt in the induction furnace with a built-in graphite condensation plate, and the temperature is 1030°C. Control the frequency of the induction furnace to realize the stirring of the melt. During this process, zinc and magnesium leave the aluminum alloy melt in the form of steam, and volatilize and condense on the condensation plate placed on the upper part of the melt.

[0058] After 180 minutes, the aluminum alloy solution was fil...

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Abstract

The invention discloses a regeneration preparation method for copper-containing aluminium alloy through aviation industry aluminium alloy waste materials and belongs to the field of circular economy technologies and environment protection. According to the main technical scheme, the method comprises the steps that the aviation industry aluminium alloy mixed waste materials after being subjected topaint removal are used, according to the target alloy component demand, a proper amount of metal or alloy is added for component regulation, smelting is conducted in a vacuum furnace, by controllingthe smelting condition process, aluminium alloy impurity removal and alloying are synchronously conducted, after filtering and impurity removal, casting is conducted, and the target copper-containingaluminium alloy is prepared. According to the method, the alloy component in the aviation industry aluminium alloy waste materials is sufficiently used, through online / offline alloy component regulation and short-range smelting, aluminium copper alloy different in type can be regenerated without additional degassing, the recycle cost is low, industrial production is easily achieved, and the methodhas obvious economical, environmental and social benefits.

Description

technical field [0001] The invention relates to a method for preparing aviation-use copper-containing aluminum alloys from recycled aluminum alloy waste in the aviation industry, and belongs to the fields of circular economy technology and environmental protection. Background technique [0002] Worldwide primary aluminum production has increased dramatically over the past few decades. Statistics show that the world's primary aluminum production was less than 20 million tons in 1997, but it had grown to 57 million tons in 2016. The 2-series and 7-series aluminum alloys have been widely used in aircraft structural materials due to their good mechanical properties, mature processing technology and reliable detection methods, which have brought revolutionary changes to the structure and performance of aircraft. [0003] Table 1. Composition of 2-series and 7-series aluminum alloys (weight percent) [0004] [0005] The composition of the 2-series and 7-series aluminum alloy...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/18C22C21/16C22C21/14C22B9/02
CPCC22C1/026C22C21/18C22C21/16C22C21/14C22B9/023C22B21/0007C22B21/066C22B21/068C22B21/0092Y02P10/20
Inventor 孙峙刘春伟韦漩曹宏斌严鹏程
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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