FIELD: metallurgy; production of lithium-aluminum alloys for chemical sources of current.
SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to production of lithium-aluminum alloys used in chemical sources of current. The invention offers a lithium-aluminum alloy, a method and an installation for its production. The alloy on the basis of lithium contains (in mass %) - aluminum - more than 0.05, but not exceeding 0.09. The method includes loading of the lithium source raw, it melting, loading of aluminum into the melt of lithium, melting of lithium - aluminum alloy under a reduced pressure, its refining, casting and a directional solidification of the alloy. At that before loading of aluminum the melt of lithium is refined. The loading of aluminum is realized into the melt of the refined lithium in a separate container, the melting of the alloy conduct at the temperature of 200-350°C with a stirring action, and the alloy casting is combined with a refining by its filtration through a porous sheet and a histic grid. The installation contains a reactor for lithium melting, a means of a noble gas feeding connected to the reactor, a filtering screen and a casting mold. At that the casing mold is additionally has: a reactor for the lithium-aluminum alloy melting; a unit with a controlled composition of a gaseous medium and with placed in it casting molds and filtering screens; a heated metal duct connecting the reactors, a vacuum creation bell to provide the lithium-aluminum melt flow through the heated metal duct located in the unit with a controlled composition of the gaseous medium and a unit with a controlled composition of the gaseous medium for cutting-off and packing of ingots. The technical result is - increased operational and commercial characteristics.
EFFECT: the invention ensures increased operational and commercial characteristics of the lithium-aluminum alloy.
14 cl, 1 dwg, 1 ex
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