METHOD AND DEVICE FOR DESCALING A METAL STRIP

Postupak za uklanjanje kovarine sa metalne trake(1), posebno toplo valjane trake od normalnog čelika ili toplo ili hladno valjane trake od austenitnog ili feritnog nerdjajućeg čelika, u kome se čelična traka (1) vodi u pravcu kretanja (R) kroz najmanje jedan plazma-uredjaj (2,3) za uklanjanje kovarine u kome se podvrgava uklanjanju kovarine plazmom, pri čemu se 0 metalna traka (1) u nastavku uklanjanja kovarine u najmanje jednom plazma-uredjaju (2,3) za uklanjanje kovarine u jednom uredjaju (4,5) za hladjenje podvrgava regulisanom hladjenju tako da iza uredjaja (4,5) za hladjenje ima unapred odredjenu temperaturu, naznačen time, što se hladjenje metalne trake (1) u najmanje jednom uredjaju (4,5) za hladjenje vrši tako što se metalna traka (1) preko obuhvatnog ugla (a) l dovodi u kontakt sa jednim rashladnim valjkom (6,7,8,9,10,11).Prijava sadrži još 1 nazavisan i 22 zavisna patentna zahteva. A method for descaling a metal strip, in which the metal strip is guided in a direction of conveyance through at least two plasma descaling units, in which it is subjected to a plasma descaling, where the plasma descaling is followed directly or indirectly by an operation in which the metal strip is coated with a coating metal by hot dip galvanizing of the metal strip. The metal strip is coated with the coating metal by a vertical passage process. The coating metal is retained as a coating bath in a coating tank by an electromagnetic seal. The metal strip preheated by the plasma descaling is guided, without exposure to air, from the plasma descaling into a protective gas atmosphere of a continuous furnace necessary for the coating.