Patent ID: 6051278
Filing Date: 2000-04-18
Classification: B22D,C23C

Abstract:
A method of producing coated metal slabs, wherein the slab is conducted into a vessel filled with molten metal through a bottom entry device of the vessel, the bottom entry device having a gap with a gap width, wherein the slab travels through the gap, wherein, after molten metal has crystallized onto the metal slab, the coated slab is pulled off above the vessel, the method comprising carrying out a controlled cooling in a bottom area of the vessel, adjusting a temperature of the molten metal at a nozzle outlet of the bottom entry device which is greater than the liquidus temperature of the molten metal, forming a meniscus in a pure melted phase at the nozzle outlet of the bottom entry device, sealing the nozzle outlet exclusively with the meniscus of the molten metal, forming a distance between the meniscus of the molten metal at the nozzle outlet and a solidification beginning, and controlling a heat removal in the area of the bottom entry device in dependence on a slab speed, molten metal bath temperature and gap width in such a way that the meniscus is formed freely and stationarily at the nozzle outlet.