METHOD OF CONTINUOUSLY CASTING OF STEEL BILLETS Russian patent published in 2014 - IPC B22D11/00 

FIELD: metallurgy.

SUBSTANCE: steel containing the following substances, in wt %: 0.05-0.5 of carbon, 0.15-1.0 of silicon, 0.35-1.5 of manganese, 0.005-0.7 of chromium, 0.005-0.5 of nickel, 0.005-0.5 of copper, not over 0.010 of sulphur, not over 0.020 of phosphorus, is subjected to out-of-furnace processing and teemed. At said out-of-furnace processing, 0.003-0.050 wt % of aluminium is added to steel and evacuation is performed. Then, 0.001-0.01 wt % of REM as a complex modifier including REM and LEM. Barium content of modifier makes 2-30 wt % while total REM-to-AEM makes 1.0:1.0-4.5.

EFFECT: better teeming of REM-containing steel.

3 cl, 1 tbl, 1 ex