Continuous casting aluminum alloy
AssigneeHunter Engineering Company
InventorsJohn E. Flowers, Christopher A. Romanowski, Dennis M. Smith
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Abstract
A method is provided for continuously casting aluminum alloys having more than two percent total alloying elements by a combination of casting at thinner gauges and much higher speeds than usual. Since remelting in the caster is avoided, sheet quality is vastly improved, surface ripples are avoided, and casting rate increased as much 50%. The method is characterized by the thickness of the cast sheet being in the range of from 4 to 5.8 millimeters and the casting rate being in the range of from 1.3 to 1.9 meters per minute. Chlorides in the molten metal are coalesced and oxides filtered to keep the inclusion rate in the cast sheet very low.
Claims22
A method for casting an aluminum alloy having more than about two percent of total alloying elements in the aluminum comprising the steps of continuously introducing such molten aluminum alloy through an insulating tip to the nip of rotating rolls and continuously withdrawing a cast sheet from between the rolls and characterized by the thickness of the cast sheet being in the range of 4 to 5.8 millimeters and the casting rate being more than 1.3 meters per minute.
A method for casting an aluminum alloy including magnesium in the range of from 2 to 5% by weight comprising the steps of continuously introducing molten aluminum alloy through an insulating tip to the nip of rotating rolls and continuously withdrawing a cast sheet from between rolls and characterized by the thickness of the cast sheet being less than 5.8 millimeters and the casting rate being in the range of from 1.3 to 1.9 meters per minute.
Dependencies are inferred from the claim text.