Casting steel strip

Details Casting steel strip Casting steel strip

2006-07-11

2009-10-20

Kerns, Kevin P (Department: 1793)

Metal founding

Means to shape metallic material

Continuous or semicontinuous casting

Reexamination Certificate

active

07604039

ABSTRACT:
In twin roll casting of steel strip, molten steel is introduced into the nip between parallel casting rolls to create a casting pool supported on casting surfaces of the rolls and the rolls are rotated to deliver solidified strip downwardly from the nip. Casting surfaces are textured by a random pattern of discrete projections, which may have an average surface distribution of between 5 and 200 peaks per mm2and an average height of at least 10 microns. In order to suppress chatter defects, the molten steel also has manganese content of at least 0.55% by weight and a silicon content in the range of 0.1 to 0.35% by weight. The strip is thus capable of moving away from the casting pool at a speed of more than 60 meters per minute without substantial high speed chattering defects.

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