METHOD OF CONTINUOUS CASTING OF STEEL Russian patent published in 2009 - IPC B22D11/00 

FIELD: metallurgy.

SUBSTANCE: disclosed method consists in primary cooling of liquid steel in crystalliser and in following secondary cooling of partially crystallised billet in groups of rollers of section of secondary cooling zone (SCZ) of continuous casting machine. There are used rollers of different length; long rollers in a lower pair are driven; also before and after the long roller of each pair there is installed a short roller of a pair adjacent to the latter; notably, spread of groups of rollers of sections of radial part of SCZ is set less, than thickness of the billet passing through them; the spread is gradually decreased in the direction of billet motion; drag force equal in value is applied to the billet on both sides of its lengthwise axis coinciding with the axis of a process channel due to arranging the driven rollers on each side.

EFFECT: upgraded stability of casting process and crystalliser durability.

2 tbl, 2 dwg