B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/51, 22/80
B22D 11/10 (2006.01) B22D 41/50 (2006.01) C04B 35/482 (2006.01) C04B 35/66 (2006.01)
Patent
CA 1168019
ABSTRACT OF THE DISCLOSURE An immersion nozzle for continuous casting of molten steel, which comprises: a nozzle body comprising an alumina-graphite refractory and a refractory layer excellent in erosion resistance against a molten mold powder, said refractory layer being arranged so as to be integral with said nozzle body and flush with the outer surface of said nozzle body at the outside portion of said nozzle body which is in contact, when the lower portion of said immersion nozzle is immersed into molten steel in a mold, with a molten meld powder layer on the meniscus of said molten steel; said immersion nozzle being characterized in that: said refractory layer arranged at said outside portion of said nozzle body consists essential- ly of, in weight percentage: Carbon (C) from 10.5 to 26.5 %, Zirconia (ZrO2) from 70.0 to 86.0 %, At least one constituent selected from the group consisting of silicon (Si) and ferrosilicon (Fe-Si) from 0.5 to 15.0 %, and, Incidental impurities Up to 3 %. - 1 -
382324
Kitani Fukuichi
Kondo Masanao
Takahashi Tatsuhito
Akechi Taikarenga Kabushiki Kaisha
Macrae & Co.
Nippon Kokan Kabushiki Kaisha
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