Casting roll for twin roll strip caster

Abstract

Disclosed is a casting roll for a twin roll strip caster, and particularly, a casting roll for a twin roll strip caster, in which a continuous gas channel, for preventing the generation of dents in the surface of a strip when casting TWIP steel in order to improve the mechanical properties of the strip, including increasing the tensile strength and elongation, is formed in the surface of the casting roll, thus discharging gas mixed when the strip is cast, thereby preventing the generation of dents in the surface of the strip when casting the TWIP steel, in particular, a continuous gas channel is formed, thereby decreasing a conventional dent index and discouraging the generation of dents.

1 . A casting roll for a twin roll strip caster, comprising a dimple, formed through shot blasting, and a continuous gas channel ( 113 ), in a surface of the casting roll ( 110 ). 
   
   
       2 . The casting roll according to  claim 1 , wherein the gas channel ( 113 ) is a grid type continuous gas channel. 
   
   
       3 . The casting roll according to  claim 1 , wherein the gas channel ( 113 ) is a continuous gas channel which is longitudinally formed. 
   
   
       4 . The casting roll according to any one of  claims 1  to  3 , wherein the gas channel ( 113 ) has a depth ranging from 0.03 mm to 0.3 mm, a width ranging from 0.1 mm to 2 mm, and a channel interval ranging from 0.1 mm to 0.6 mm. 
   
   
       5 . The casting roll according to  claim 4 , wherein the gas channel ( 113 ) is finely formed using a laser.