METHOD FOR CONTINUOUS STEEL CASTING (EMBODIMENTS) Russian patent published in 2023 - IPC B22D11/18 

FIELD: continuous casting of steel.

SUBSTANCE: method of continuous casting of steel includes the supply of steel from a steel-pouring ladle to an intermediate one through a protective tube or without it, and then through a metal wire with an inner diameter of a channel of 35-60 mm into a quadrangular-section mould with a size ratio of 1.29-18, forming a billet and pulling it out of crystallizer. The flow of steel into the mould is regulated depending on the speed of drawing the ingot at the beginning of casting or after replacing the intermediate ladle. At the beginning of casting, the ingot drawing speed is gradually increased from 0 m/min to the starting speed and maintained at it for 60-240 s, then the speed is increased to the operating speed in cycles with an increase in speed in the range of 0.04-0.15 m/min in one cycle. The time (X) of one cycle of speed increase is determined by the formula: X=A+B, where A is the time taken to increase the speed, s; B is the holding time at the achieved speed, s. The exposure time (B) is determined by the formula: B=K1⋅A, where K1is a constant coefficient equal to 0.8-4.0.

EFFECT: increased stability of steel casting is provided.

4 cl, 3 dwg, 3 ex