In accordance with the quality problem of austenite stainless steel during concasting

the taper of mould for 1260 mm×160 mm slab casting at No3 steelmaking shop

Taiyuan Iron and Steel was analyzed. It is obtained that to adopt two taper mould

that is to use larger taper at 80～200 mm near liquid surface and use minor taper at mould bottom 200~800 mm from liquid surface

is more suitable for the law of shrinkage of casting slab in mould than single taper mould by calculation of shrinkage of stainless steel casting slab in mould and analysis of effect of process parameters such as casting speed

degree of molten steel overheating on shrinkage of casting slab.Based on this foundation the curve taper mould has been designed

and the production test showed that the quality of casting slab was obviously improved by two taper mould design to eliminate narow face bulging and concave of slab.