Method of alloying aluminium

Details Method of alloying aluminium Method of alloying aluminium

1987-09-16

1989-05-23

Roy, Upendra

Alloys or metallic compositions

Aluminum base

420590, C22C 2100

Patent

active

048329118

ABSTRACT:
Aluminium is alloyed by adding alloying ingredients to the molten metal in an intermediate treatment vessel or ladle rather than as at present in a casting furnace. If several ladles are used to supply the casting furnace, the alloying ingredients may be added to some but not all of them. A preferred order of addition of alloying ingredients is: (i) AlF.sub.3 to reduce unwanted Na, Ca and Li; (ii) one or more of Mn, Fe, Cr, Ni, Cu, Zn and Si in powder form; (iii) one or more of Zn, Cu and Si in massive form; (iv) Mg. A ladle/impeller design is described.

REFERENCES:
patent: 2595292 (1952-05-01), Reece
patent: 3592637 (1971-07-01), Brown et al.
patent: 3788839 (1974-01-01), Faunce
patent: 4080200 (1978-03-01), Sheridan
patent: 4174965 (1979-10-01), Buxmann
patent: 4248630 (1981-02-01), Balmuth
patent: 4383970 (1983-05-01), Komuro et al.
patent: 4556535 (1985-12-01), Bowman et al.

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