Method of Applying a Wetting Flux to a Strip Casting Roll
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 550° C. The flux coating enhances wetting of the steel melt to the casting roll and dissolves any metal oxide formed on the roll.
R. S. Williams et al., "Strip casting with fluxing agent applied to casting roll," U.S. Patents, Jul 1997.
Materials Science and Engineering
Peaslee Steel Manufacturing Research Center
Patent Application Number
© 1997 AK Steel Corp, All rights reserved.
29 Jul 1997