| 摘要 |
<p>The invention relates to ferrous metallurgy, in particular, to production of steel slabs by continuous casting. In the claimed method for continuous casting of steel, superheated metal is fed from an intermediate ladle to a mold having a rectangular cross-section by means of a submersible nozzle, which has a sprue channel in its upper part adjacent to the intermediate ladle; the sprue channel branches in the lower part of the nozzle to at least two closed- bottom outlet channels. The closed-bottom outlet channels are located within the nozzle limited by a skirt that stretches toward the narrow edges of the mold and joins with the nozzle above the level where the closed-bottom outlet channels branch, and by the lower edge of the skirt located below the level of the bottom of the closed-bottom outlet channels. Each closed-bottom outlet channel has two diametrically positioned and horizontally directed outlets, wherein the axes of the outlets form an angle that is not 90º with the wide edge of the mold in the horizontal plane. Another object of the invention is a submersible nozzle for implementation of said steel casting method. The claimed method for continuous casting of steel and submersible nozzle used therein result in an increased rate of casting, providing more uniform volumetric metal temperature and reduced wearing of the submersible nozzle, thus increasing the efficiency of slab continuous casting devices.</p> |
