Cooling system for thick plate or steel plate

摘要

Disclosed is a cooling system for a thick plate or a steel plate, which includes: a conveying unit conveying a cooling object; and a nozzle unit (120) disposed above the conveying unit and having a plurality of ejection holes (122) to eject cooling water supplied through a plurality of channels (123) formed therein to the cooling object, in which spiral swirl patterns are formed on the inner sides of the channels (123) such that cooling water comes in contact with the cooling object while spirally rotating and flowing from the nozzle unit (120). Therefore, according to the cooling system for a thick plate or a steel plate of the present disclosure, it is possible to improve cooling performance and cooling efficiency by preventing cooling water from remaining on a cooling object such as a thick plate or a steel plate such that cooling water comes in direct contact with the cooling object such as a thick plate or a steel plate.