Dispensing – Molten metal dispensing – Flow controllers or assists
Patent
1988-07-11
1990-04-17
Kastler, S.
Dispensing
Molten metal dispensing
Flow controllers or assists
222597, B22D 4108
Patent
active
049172760
ABSTRACT:
Erosion or corrosion that has been caused during pouring a molten steel through a sliding gate nozzle for continuous casting becomes very serious when a specially treated molten steel such as deoxidized steel with a Ca alloy is applied for continuous casting. Such erosion can be eliminated by partially arranging a zirconia base refractory material on a portion of the inner surface of the nozzle hole. The zirconia base refractory material is composed of more than 53% by weight of partially stabilized zirconia base refractory material having less than 10 mesh grain size, 1 to 7% by weight of metallic silicon powder having less than 100 mesh grain size and 3 to 10% by weight of carbon powder.
REFERENCES:
patent: 4386765 (1983-06-01), Roberts et al.
patent: 4720083 (1988-01-01), Zverina et al.
Shikano Hiroshi
Suruga Toshihiro
Kastler S.
Kurosaki Refractories Co. Ltd.
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