TWIN-ROLL STRIP CASTER, METHOD FOR MANUFACTURING THIN DUPLEX STAINLESS STEEL SHEET USING THE SAME AND THIN DUPLEX STAINLESS STEEL SHEET

摘要

Provided are a twin-roll strip caster, a method for manufacturing a duplex stainless steel sheet using the same, and a thin duplex stainless steel sheet. The twin-roll strip caster includes a pair of casting rolls rotating in opposite directions, an edge dam installed such that a molten steel pool is formed on respective sides of the casting rolls, and a meniscus shield provided to cover the molten steel pool such that a contact between the molten steel pool and air is blocked, wherein hills and valleys are alternately arranged on surfaces of the cast rolls in circumferential directions thereof and a hill area in edge sections thereof is higher than that in centers sections thereof. Since cast rolls in which a hill area ratio of edge sections is higher than that of center sections are used, a thin stainless steel sheet with improved edge quality may be provided.

主权项

1. A twin-roll strip caster comprising:
a pair of casting rolls rotating in opposite directions; an edge dam installed such that a molten steel pool is formed on respective sides of the pair of casting rolls; and a meniscus shield provided to cover the molten steel pool such that a contact between the molten steel pool and air is blocked, wherein hills and valleys are alternately arranged on surfaces of the pair of cast rolls in circumferential directions thereof and a hill area ratio (an area ratio of hills) in edge sections thereof is higher than that in centers sections thereof.