COOLING DEVICE OF A CONTINUOUS GALVANIZING LINE, CAPABLE OF PREVENTING REDUCTION OF COOLING EFFICIENCY DUE TO HEATED COOLING MEDIA STAYING IN A COOLING ZONE

摘要

PURPOSE: A cooling device of a continuous galvanizing line is provided to rapidly discharge heated cooling media by allowing the cooling media sprayed to a steel sheet to escape along the width of the steel sheet and through a gap between spray tubes.;CONSTITUTION: A continuous galvanizing line comprises a plating bath(100) in which a steel sheet(P) is inserted to be galvanized, an air knife(110) controlling the amount of plating attached to the surface of the steel sheet passed through the plating bath, and a cooling device(10) cooling the steel sheet. The cooling device comprises a plurality of spray tubes(20) arranged in the transverse direction on both sides of the steel sheet at regular intervals in the transfer direction of the steel sheet to spray cooling media to the surface of the steel sheet, a blower unit connected to the spray tubes to supply cooling media, and a discharge unit installed between the spray tubes in the transverse direction of the steel sheet to discharge the heat-exchanged cooling media.;COPYRIGHT KIPO 2013