METHOD OF VACUUM TREATMENT OF ALUMINIUM ALLOYS Russian patent published in 2009 - IPC C22B21/06 C22B9/04 

Abstract RU 2361938 C1

FIELD: metallurgy.

SUBSTANCE: invention can be used for melts refinement from aluminium alloys in preference high-alloy. Method of aluminium alloys vacuum treatment includes pouring of heated melt into furnace, creation of vacuum in furnace, melt isolation in vacuum during 45÷90 minutes in the range of temperatures higher liquidus point for 15÷30°C at residual pressure 1.33×102÷18.62×102 Pa.

EFFECT: reduction of being duration of molten metal in holding furnace, keeping of modifying agent effect, receiving of uniform fine-grained structure and reduction of hydrogen content in casting ingots, reduction of defects amount in manufactured deformed semi-finished products.

2 cl, 1 tbl, 2 ex

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RU 2 361 938 C1

Authors

Sukhikh Aleksandr Juvenal'Evich

Suslov Georgij Alekseevich

Timokhov Sergej Nikolaevich

Efremov Vjacheslav Petrovich

Babinov Andrej Anatol'Evich

Potekhin Aleksandr Vasil'Evich

Dates

2009-07-20Published

2007-11-06Filed