NOZZLE FOR CASTING WIDE AND THIN SLAB

摘要

PURPOSE:To provide a nozzle having excellent durability and excellent performance by incorporating the specific vol% of CaO-stabilized ZrO2 fiber in raw material of the nozzle for casting containing zirconia-graphite as the essential component. CONSTITUTION:The CaO-stabilized ZrO2 fiber is contained at 5-20 vol% in the raw material of nozzle for casting containing the zirconiz-graphite as the essential component. The contained CaO-stabilized ZrO fiber is made to have 1-6mum fiber diameter and 60-150mum fiber length. By this method, high bending strength, high breaking energy and high heat impact resistance can be provided to the nozzle.