Title:
NOZZLE FOR DISCHARGING MOLTEN METAL
Document Type and Number:
WIPO Patent Application WO/2011/033829
Kind Code:
A1
Abstract:
Disclosed is a nozzle for discharging molten metal equipped with an inner opening shape that is capable of suppressing the occurrence of deposits by focusing on the shape of the inner opening of the nozzle for discharging molten metal and creating a smooth (uniform) flow of molten steel with minimal energy loss. More specifically, the nozzle for discharging molten metal has a shape in which the radius (r(0)) of the inner opening top (12) is at least 1.5 times the radius (r(L)) of the inner opening bottom (13) when the shaft direction length of the inner hole (11) is set as (L); there is no bend point in the cross section shape of the inner opening wall (14), which has been cut along the shaft of the inner opening; and the inner opening radius (r(z)) on a position along the distance (z) from the inner opening top towards the bottom is in the range of [〔L/{(r(0)/r(L))1.5-1}+L〕/〔L/{(r(0)/r(L))1.5-1}+z〕]1/1.5×r(L) to [〔L/{(r(0)/r(L))6-1}+L〕/〔L/{(r(0)/r(L))6-1}+z〕]1/6×r(L).
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Inventors:
MIZOBE, Arito (1-1 Higashihama-machi, Yahatanishi-ku, Kitakyushu-sh, Fukuoka 86, 〒8068586, JP)
Application Number:
JP2010/059308
Publication Date:
March 24, 2011
Filing Date:
June 02, 2010
Export Citation:
Assignee:
KROSAKIHARIMA CORPORATION (1-1 Higashihama-machi, Yahatanishi-ku Kitakyushu-sh, Fukuoka 86, 〒8068586, JP)
黒崎播磨株式会社 (〒86 福岡県北九州市八幡西区東浜町１番１号 Fukuoka, 〒8068586, JP)
黒崎播磨株式会社 (〒86 福岡県北九州市八幡西区東浜町１番１号 Fukuoka, 〒8068586, JP)
International Classes:
B22D41/50; B22D11/10; B22D46/00
Attorney, Agent or Firm:
KOHORI, Susumu et al. (Hakata-Shin-Mitsui Bldg, 1-1 Hakataekimae 1-chome, Hakata-ku, Fukuoka-sh, Fukuoka 11, 〒8120011, JP)
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