Shape-correcting and rolling method and shape-correcting device for high-strength steel
AssigneePosco
InventorsGil-Ho SONG, Jae-Woong BYUN, Nam-Il JO, Sang-Kug JE, Jae-Wook BAE
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Abstract
There are provided a shape-correcting and rolling method and a shape-correcting device for effectively correcting the shape of high-strength steel. The shape-correcting and rolling method includes: transferring a hot-rolled coil to a pay-off reel after cooling the hot-rolled coil or directly through a hot rolling to skin pass mill direct transfer process; unwinding the coil from the pay-off reel; correcting a shape of a strip unwound from the coil by using a heat pipe roller; and rewinding the strip as a coil.
Claims20
A shape-correcting and rolling method for high-strength steel, comprising:
- performing a hot rolling to skin pass mill direct transfer process by transferring a hot-rolled coil to a pay-off reel;
- unwinding a strip from the coil of the pay-off reel;
- correcting a shape of the strip by using a heat pipe roller;
- and
- rewinding the strip as a coil.
A shape-correcting and rolling method for high-strength steel, comprising:
- performing a first transfer process by transferring a hot-rolled coil to a temperature adjusting unit;
- cooling the coil while monitoring a temperature of the coil;
- performing a second transfer process by transferring the coil cooled to a temperature of 150° C. or higher to a pay-off reel;
- unwinding a strip from the coil of the pay-off reel;
- correcting a shape of the strip by using a heat pipe roller;
- and
- rewinding the strip as a coil.
A shape-correcting device for high-strength steel, the shape-correcting device comprising:
- a pay-off reel from which a coil is unwound;
- a skin pass mill correcting a strip unwound from the coil of the pay-off reel;
- and
- a coiler rewinding the strip after the strip passes through the skin pass mill,
- wherein the skin pass mill comprises a work roll that is a heat pipe roller in which heat pipes are installed.
Dependencies are inferred from the claim text.