Patent ID: 6516870
Filing Date: 2003-02-11
Classification: B22D,C21C,Y02P

Abstract:
In a process of continuously casting steel wherein liquid steel is teemed from a ladle through a shroud tube into a tundish and flows from the tundish through at least one outlet remote from the shroud tube into a casting mold, and a layer of flux is employed to cover the surface of the liquid steel in the tundish, the improvement comprising,covering the liquid steel surface in a first area of the tundish surrounding the shroud tube with a layer of a first flux and covering the liquid steel surface in the remaining area of the tundish with a layer of a second flux, providing baffle means projecting upwardly from the liquid steel surface separating the areas covered by and preventing intermixing of said layers of said first and second fluxes, said first flux having a melting temperature providing a liquid flux layer covering and contacting the steel surface in said first area and said second flux having a melting temperature lower than the melting temperature of said first flux and providing a liquid flux layer covering the steel surface in the remaining area of the tundish.