TEEMING SUBMERGED NOZZLE Russian patent published in 2020 - IPC B22D41/50 

FIELD: metallurgy.

SUBSTANCE: invention relates to ferrous metallurgy and can be used in continuous casting of liquid metal, in particular, for casting bloom blanks of round, square and rectangular cross-section on machines for continuous casting of workpieces, in which for the metal supply under the level immersion steel teeming nozzles are used. Nozzle comprises a cylindrical pipe having a metal-conducting channel and a slag belt with a zirconium insert, which is coupled with the pipe upper and lower transition areas, wherein pipe in upper part along outer surface has conical expansion in form of cone towards intermediate ladle, wherein cylindrical pipe in zone of slag belt with zirconium insert is radially expanded and its diameter is calculated by formula.

EFFECT: invention provides increased stability of steel teeming immersion nozzle, both direct-flow and blind-hole, which allows to increase casting series of melts through intermediate ladle without replacement of submersible nozzles.

1 cl, 1 dwg