Additive for adding one or more metals into aluminium alloys
AssigneeBostlan, S.A.
InventorsAitor Arco Gonzalez, Francisco Diaz Maruri, Tomas Posada Fernandez, Javier Eluztondo Amorrortu
Life of this patent
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Abstract
Briquettes or tablets to be added to an aluminium melt, are made up by the combination of an agglutinated powder which include, at least, an aluminium powder, a powder of one or more metals or alloys including those to be added, and a wax-type organic compound, all in adequate proportions. This combination allows the increase of the dissolution velocity of the added metals, the recoveries of the added metal, a better stirring of the melting aluminium, and the reduction of impurities and of accumulated metal in the bottom of the furnace.
Claims17
An additive for adding one or more metals in aluminum alloys which consists essentially of
- (a) an agglutinating powder comprising aluminum, magnesium or a mixture or alloy thereof,
- (b) a powder of one or more metals or alloys of manganese, chromium, tungsten, molybdenum, titanium, vanadium, iron, cobalt, copper, niobium, nickel, tantalum, zirconium, hafnium, silver, lead or zinc,
- (c) a binder in an amount of 0.1 to 1% consisting essentially of a non-polar organic wax and substantially free of any other binder,
- wherein the following weight proportions in the final mixture are from 49.9% to 0% for component (a), from 50% to 95% for component (b) and from 0.1% to 5% for binder component (c).
In a process of forming an aluminium alloy comprising adding at least one alloying metal to aluminium undergoing melting or a melt thereof, the improvement wherein said alloying metal is present in the form of a briquette or tablet which contains
- (a) up to 49.9% of an agglutinating powder comprising aluminium, magnesium or a mixture or alloy thereof;
- (b) 50% to 95% of a powder of one or more of said alloying metals or alloys thereof, said alloying metals comprising manganese, chromium, tungsten, molybdenum, titanium, vanadium, iron, cobalt, copper, niobium, nickel, tantalum, zirconium, hafnium, silver, lead or zinc, and
- (c) from 0.1% to 5% of a non-polar organic wax.
Dependencies are inferred from the claim text.