CASTING MOULD FOR STEEL INGOT Russian patent published in 2012 - IPC B22D7/06 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Casting mould comprises bed with recess, container and feeder head. Recess volume in bed makes 0.5-1.5% of casting mould volume. Taper of feeder head inner cavity makes 5-10%. Taper of casting mould container inner cavity makes 1.5-2% at container height-to-cavity diameter ratio of H_k/D_k≤1 or 14.5…16% at H_k/D_k>1. Mean inner diameter of feeder head (D_fm) is defined from relation: D_fm=0.45…0.75-(4.1…6.0)-D_k·a/(1+4·a), where a is preset H_k/D_k. Feeder head inner cavity volume (V_n) is defined from expression: V_n≥0.24…1.89-D_fm ³.

EFFECT: dense defectless ingot axial zone.

1 dwg, 3 tbl