US 11,939,644 B2
Method for regenerating copper-containing aluminum alloy from aluminum alloy scrap
Zhi Sun, Beijing (CN); Chunwei Liu, Beijing (CN); Xuan Wei, Beijing (CN); Hongbin Cao, Beijing (CN); and Pengcheng Yan, Beijing (CN)
Assigned to The Boeing Company, Arlington, VA (US)
Appl. No. 17/053,971
Filed by The Boeing Company, Chicago, IL (US)
PCT Filed Jul. 25, 2019, PCT No. PCT/US2019/043333
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2020/023689, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 201810838171.X (CN), filed on Jul. 26, 2018.
Prior Publication US 2021/0269893 A1, Sep. 2, 2021
Int. Cl. C22B 21/06 (2006.01); C22B 21/00 (2006.01); C22C 1/02 (2006.01); C22C 21/14 (2006.01); C22C 21/16 (2006.01); C22C 21/18 (2006.01)
CPC C22B 21/068 (2013.01) [C22B 21/0007 (2013.01); C22B 21/0092 (2013.01); C22B 21/066 (2013.01); C22C 1/026 (2013.01); C22C 21/14 (2013.01); C22C 21/16 (2013.01); C22C 21/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for regenerating different types of copper-containing aluminum alloys using aluminum alloy scrap, said method comprising:
detecting a chemical composition of said aluminum alloy scrap and adding a suitable amount of a metal or alloy additive according to a composition requirement of a target aluminum-copper alloy, thereby obtaining a mixture of aluminum alloy scrap and metal or alloy additive;
vacuum smelting the mixture of aluminum alloy scrap and metal or alloy additive in a vacuum furnace, wherein impurities are removed and an aluminum alloy solution is formed;
filtering the aluminum alloy solution using a filter to obtain a melt comprising a target aluminum alloy composition; and
casting the target aluminum alloy composition from said melt,
wherein the metal or alloy additive is added with the aluminum alloy scrap before the step of vacuum smelting the mixture of aluminum alloy scrap and metal or alloy additive.