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    • 93. 发明公开
    • Molten steel pouring nozzle
    • GiessdüsefürStahlschmelze。
    • EP0588218A1
    • 1994-03-23
    • EP93114363.0
    • 1993-09-07
    • AKECHI CERAMICS CO. LTD.
    • Andoh, MitsuruYamauchi, Noriaki
    • B22D41/54C04B35/10C04B35/18
    • C04B35/6303B22D41/54C04B35/66C04B2111/00887C04B2235/3217C04B2235/3418C04B2235/3826C04B2235/422C04B2235/9676
    • A molten steel pouring nozzle (1) which comprises: a nozzle body (2) comprising an alumina-graphite refractory, having, along the axis thereof, a bore (3) through which molten steel flows; and an outer refractory layer (4) arranged on an outside portion of the nozzle body (2) so as to be integral with the nozzle body and to be flush with an outer surface thereof, the outer refractory layer being arranged on a portion of the outside portion of the nozzle body, which portion is in contact, when a lower portion of the molten steel pouring nozzle is immersed into molten steel, with the open air without being immersed into the molten steel, and the outer refractory layer consisting essentially of:







      alumina (Al₂O₃)
      from 40 to 75 wt.%,

      carbon (C)
      from 10 to 30 wt.%,

      silica (SiO₂)
      from 1 to 30 wt.%,

      silicon carbide (SiC)
      from 1 to 20 wt.%,

      and


      low-melting glass
      from 1 to 10 wt.%.
    • 1.一种钢水浇注嘴(1),其特征在于,包括:具有氧化铝 - 石墨耐火材料的喷嘴体(2),其沿着所述轴线具有钢水流过的孔(3) 以及外部耐火层(4),其设置在所述喷嘴体(2)的外侧部分上,以与所述喷嘴体一体形成并与其外表面齐平,所述外耐火层设置在所述喷嘴主体 当钢水倾倒喷嘴的下部浸没在钢水中时,喷嘴体的外部部分接触,露出的空气不浸入钢水中,外部耐火层主要由以下部分组成: