Method and Apparatus for Removing Scale from Hot-Rolled Steel Strip
AssigneePosco
InventorsYoung-Sool Jin, Tae-Chul Kim, Soo-Hyoun Cho, Kee-Jo Jeong, Young-Ki Lee
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Abstract
A method for continuously removing scale from a hot-rolled carbon steel strip includes: cracking the scale on the hot-rolled steel strip; shot-blasting the cracked scale to remove the scale; deforming the hot-rolled steel strip so as to weaken the bond between scale remaining after the shot-blasting and the hot-rolled steel strip and so as to impart surface roughness to the hot-rolled steel sheet; and polishing the deformed hot-rolled steel strip to remove the remaining scale.
Claims19
A method for continuously removing scale from a hot-rolled carbon steel strip, the method comprising:
- cracking the scale on the hot-rolled steel strip;
- shot-blasting the cracked scale to remove the scale;
- deforming the hot-rolled steel strip so as to weaken the bond between scale remaining after the shot-blasting and the hot-rolled steel strip and so as to impart surface roughness to the hot-rolled steel sheet;
- and
- polishing the deformed hot-rolled steel strip to remove the remaining scale.
An apparatus for continuously removing scale from a hot-rolled carbon steel strip, the apparatus comprising:
- a cracking unit for cracking the scale on the hot-rolled steel strip;
- a shot-blasting unit placed behind the cracking unit and serving to shot-blast the cracked scale so as to remove the scale;
- a steel strip-deforming unit placed behind the shot-blasting unit and serving to deform the hot-rolled steel strip so as to weaken the bond between scale remaining after passage through the shot-blasting unit and the hot-rolled steel sheet and so as to impart surface roughness to the hot-rolled steel strip;
- and
- a polishing unit placed behind the steel strip-deforming unit and serving to polish the hot-rolled steel strip, passed through the steel strip-deforming unit, so as to remove the remaining scale.
Dependencies are inferred from the claim text.