| 摘要 |
PROBLEM TO BE SOLVED: To provide an immersion nozzle for continuous casting which is used for pouring molten steel into a casting mold and realizes an improvement in cast billet quality or stability of casting by suppressing erosion of the immersion nozzle and inhibiting the clogging or blocking of the nozzle caused by inclusions stuck to the immersion nozzle. SOLUTION: The continuous casting immersion nozzle is composed of a tubular body that pours molten steel into the casting mold and an immersion section that has a plurality of discharging holes provided continuously to the tubular body, wherein an integrally formed dolomite-graphitic refractory containing 11-30 mass% carbon in a dolomite clinker is arranged inside the immersion section of the refractory constituting immersion section that has the tubular body and the plurality of discharging holes, further in the upper part of the above refractory, an interior body having as the main components, 25-65 mass% CaO and 25-70 mass% MgO contained in the refractory in which the dolomite clinker is mixed, is provided. COPYRIGHT: (C)2005,JPO&NCIPI
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