VERFAHREN ZUM ABKÜHLEN VON BÄNDERN ODER PLATTEN AUS METALL UND KÜHLVORRICHTUNG

摘要

According to prior art, the surfaces of heated strips or metal plates are directly impinged upon with fan jet nozzles along the entire width thereof for quick cooling. Inhomogeneous water quantities can lead to irregularities in cooling between and within the target surfaces. The use of a plurality of low-diameter coolant jets also known per se, whereby the coolant is fully vaporised, requires a great deal of effort in terms of filters for the recycled coolant. According to both methods, when the strips are cooled, there is a risk of warping. The aim of the invention is to develop a method and a device which solve the above-mentioned problems. According to the invention, the lower surface of the strips or plates are mainly impinged upon by water jets which exit from full jet nozzles having a diameter of 0.5 5 mm and which are arranged in at least one row.