US 11,345,979 B2 · Method of casting articles from aluminum alloys

Method of casting articles from aluminum alloys

AssigneeObshchestvo S Ogranichennoy Otvetstvennost'yu “Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologicheskiy Tsentr”

InventorsAleksandr Yur'evich Sidorov, Viktor Fedorovich Frolov, Igor′ Vladimirovich Kostin, Andrej Viktorovich Danilov, Aleksandr Yur'evich Krokhin, Sergej Vladimirovich Belyaev, Aleksandr Innokent'evich Bezrukikh

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Abstract

The invention relates to the field of aluminum metallurgy and can be used to produce ingots from high quality aluminum alloys when manufacturing aerospace and automotive products. The use of this invention relates to the technology of secondary modification. The method of casting products from aluminum alloys includes the following stages: a) aluminum melt preparation in the alloying furnace; b) addition alloy introduction into melt; c) degassing of the aluminum melt containing the addition alloy; d) addition alloy re-introduction; e) filtration of the aluminum melt obtained at stage d) and f) feeding the filtered melt into the crystallizer. It ensures the improved effectiveness of the aluminum melt modification with addition alloys without additional constructional changes in existing lines for aluminum ingot casting. It allows reducing the alloy modification costs, decreasing the grain in resulting alloys and improving plastic and mechanical properties of the obtained cast ingots and their products.

Claims13

Dependent claims

The method of casting products from aluminum alloys that includes the following stages

a) Aluminum melt preparation in the alloying furnace;
b) Al—Ti—B addition alloy introduction into the melt;
c) Degassing of the aluminum melt with the addition alloy;
d) Addition alloy re-introduction;
e) Filtration of the aluminum melt obtained at stage d), wherein the molten metal filtration is carried out in two stages, and
f) Feeding the filtered melt into the crystallizer,
where the ratio of the addition alloy supplied amount at stage b) and stage d) is from 1:1 to 9:1, and the flow rate of the molten metal from the alloying furnace to the crystallizer is 10-16 cm/s.

4 more elements

Dependencies are inferred from the claim text.