METHOD FOR CONTINUOUSLY CASTING HIGH CARBON STEEL BLOOM

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently and continuously casting a bloom having little center segregation and internal crack and high quality, when the high carbon steel bloom is continuously cast by using a bending type or a vertical and bending type continuous caster.;SOLUTION: When the high carbon steel bloom is continuously cast by using the bending type or the vertical and bending type continuous caster, a roll alignment is controlled so that the contacting position of the bloom between each roll and the bloom in a zone where non-solidified part remains is not deviated beyond 2 mm in the thickness direction from the pre-designed contacting position between each roll and the bloom in this zone, and when Ln represents a distance between rolls disposed adjacent in the casting direction and dn represents the average solidified shell thickness in the interval between the rolls, the maximum value of a ratio [Ln/dn] is controlled to be less than 7.;COPYRIGHT: (C)2004,JPO