A process for the preparation of a steel strip by means of a horizontal strip casting with improved surface quality

摘要

The invention relates to a method for the manufacture of a steel strip by means of a horizontal strip casting with improved surface quality, wherein a molten steel from a melting vessel into a casting made as a main component of inert gas atmosphere via an object of the system to a continuous cast strip a horizontal strip casting plant is fed to a steel strip solidifies, and optionally a subsequent hot shaping, is subjected to. In order to achieve an oxidation of open pores during the casting, and therefore to prevent the surface quality of the steel strip, in particular in steels with al - contents of less than 1 w -% and / or c - contents of more than 0,1 w -%, to improve considerably from an economic point of view, it is proposed that in the region of the object of the melt on the cast strip and in of the casting mould atmosphere, at least in partial areas on the side facing away from the cast strip, the surface of the still molten or already located in the solidification of the melt, which prevents the admission of air-oxygen to the melt surface, essentially of aluminum or aluminum oxide, existing protective layer is applied.