| 摘要 |
<p>Provided is a hot-rolled steel sheet production apparatus in which excellent drainage performance can be achieved in a hot-rolled steel sheet production line thereof. The hot-rolled steel sheet production apparatus comprises a row of hot finishing mills and a cooling device which is arranged so as to cool a steel sheet, wherein the cooling device comprises an upper-surface-side nozzle which enables the spraying of cooling water from above, a lower-surface-side nozzle which enables the spraying of the cooling water from underneath, an upper surface guide which is arranged between a pass line and the upper-surface-side nozzle, a lower surface guide which is arranged between the pass line and the lower-surface-side nozzle, and a forced drainage means which can forcibly suck the cooling water sprayed through the upper-surface-side nozzle and can discharge the sucked cooling water, and wherein the forced drainage means comprises a water-conducting passage having an opening arranged on a side from which the cooling-water flows into the water-conducting passage and an opening arranged on a side from which the cooling water flows out of the water-conducting passage and a suction unit which can forcibly discharge the cooling water that has flowed into the water-conducting passage.</p> |
