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Strip casting with fluxing agent applied to casting roll

United States Patent

July 29, 1997
View the Complete Patent at the US Patent & Trademark Office
A strip caster (10) for producing a continuous strip (24) includes a tundish (12) for containing a melt (14), a pair of horizontally disposed water cooled casting rolls (22) and devices (29) for electrostatically coating the outer peripheral chill surfaces (44) of the casting rolls with a powder flux material (56). The casting rolls are juxtaposed relative to one another for forming a pouting basin (18) for receiving the melt through a teeming tube (16) thereby establishing a meniscus (20) between the rolls for forming the strip. The melt is protected from the outside air by a non-oxidizing gas passed through a supply line (28) to a sealing chamber (26). A preferred flux is boron oxide having a melting point of about C. The flux coating enhances wetting of the steel melt to the casting roll and dissolves any metal oxide formed on the roll.
Williams; Robert S. (Fairfield, OH), O'Malley; Ronald J. (Miamisburg, OH), Sussman; Richard C. (West Chester, OH)
Armco Inc. (Middletown, OH)
08/ 540,370
October 6, 1995
The Government of the United States of America has rights in this invention pursuant to Contract No. DE-FC07-92ID13086 awarded by the U.S. Department of Energy.