| 摘要 |
PURPOSE:To provide a titled nozzle which is highly resistant to spalling and corrosion by forming a protective layer composed of a castable refractory material contg. inorg. fibers on the outside circumferential part in the slag line part of a body consisting of molten quartz and/or on the inside circumference in the discharge port part thereof. CONSTITUTION:A protective layer of an outer ring 3 or inner ring 5 is provided on the outside circumference in the slag line part 2 of a long nozzle body 1 consisting of molten quartz and/or on the inside circumference of a discharge part 4 by using castable refractories contg. 70-90wt% a refractory material consisting of >=1 kind among magnesia, zirconia and alumina, 5-15% inorg. fiber such as asbestos, ceramic fibers, etc. and a binder such as a Blei Ofen. A nozzle of molten quartz for casting which is highly resistant to spalling, has improved resistance to corrosion and is usable for continuous casting is thus obtd. |
