PROTECTIVE COATING FOR ELEMENTS IN REFRACTORY MATERIAL OF A CONTINUOUS CASTING LINGOTIERE OF METALS, AND ELEMENTS IN REFRACTORY MATERIAL PROTECTED WITH THIS COATING

摘要

The subject of the invention is a protective coating for a refractory material element of a mold for the continuous casting of metals, in particular steel, characterized in that it consists of a dispersion of particles in a solvent, said particles comprising essentially boron nitride and at least one of the following metal oxides: zircon, zirconia, alumina, silica, the boron nitride representing between 20 and 50% by weight of said particles. BR/ The invention also relates to an element refractory material of a mold for continuous casting of metals, in particular steel, characterized in that it is coated with a protective layer (13, 14, 14 ') resulting from the application and subsequent drying of a protective coating of the above type. This element can be in particular a casting nozzle (7) or a lateral face (4, 4 ') of continuous casting between rolls.