NOZZLE FOR CONTINUOUSLY CASTING STEEL

摘要

PROBLEM TO BE SOLVED: To provide a nozzle for continuous casting which has excellent spalling resistance and low heat conductivity and prevents the stickiness of oxide, such as alumina or skull on the working surface in the inner tube and can improve a stable operation and a steel quality. SOLUTION: The nozzle for continuously casting the steel is disposed with a material having 10-30 W/mK thermal conductivity at 500°C in a powder line part and disposed with a material having 1-15 W/mK thermal conductivity at 500°C in a main body part except the powder line part and has the higher thermal conductivity in the powder line part than that in the main body part. COPYRIGHT: (C)2003,JPO