REFRACTORY SLAG BAND
    73.
    发明申请
    REFRACTORY SLAG BAND 有权
    耐火条带

    公开(公告)号:US20130045856A1

    公开(公告)日:2013-02-21

    申请号:US12735762

    申请日:2009-02-12

    摘要: The present invention resides in a refractory composition for use as a cold start slag band. The composition comprises an admixture of partially stabilised zirconia and/or fully stabilised zirconia and monoclinic zirconia, characterised in that the proportion of monoclinic relative to the total zirconia content is at least 40% by weight. The invention also resides in a slag band formed from the composition, a submerged entry nozzle incorporating the slag band and a method of forming such a submerged entry nozzle.

    摘要翻译: 本发明涉及用作冷起始炉渣带的耐火材料组合物。 组合物包含部分稳定的氧化锆和/或完全稳定的氧化锆和单斜晶氧化锆的混合物,其特征在于单斜相对于总氧化锆含量的比例为至少40重量%。 本发明还涉及由组合物形成的炉渣带,包含炉渣带的浸入式喷嘴和形成这种浸入式喷嘴的方法。

    HAFNIA-MODIFIED RARE-EARTH METAL-BASED CERAMIC BODIES AND CASTING PROCESSES PERFORMED THEREWITH
    78.
    发明申请
    HAFNIA-MODIFIED RARE-EARTH METAL-BASED CERAMIC BODIES AND CASTING PROCESSES PERFORMED THEREWITH 有权
    HAFNIA改性稀土金属基陶瓷体和铸造工艺

    公开(公告)号:US20090197758A1

    公开(公告)日:2009-08-06

    申请号:US12023314

    申请日:2008-01-31

    IPC分类号: C04B35/50

    摘要: Compositions suitable for use as cores and shell molds for casting of reactive metal alloys, and casting processes for producing components from such alloys. The composition contains a sintered particulate material of hafnia and at least one additional metal oxide in amounts to yield a ceramic composition containing up to 70 molar percent of hafnia, wherein the additional metal oxide is a rare-earth oxide, the sintered particulate material contains first and second phases, the first phase is the rare-earth oxide and hafnia in solid solution, the second phase is a compound of the rare-earth oxide and hafnia, and the second phase is less reactive with the reactive metal alloy than the first phase.

    摘要翻译: 适合用作用于铸造活性金属合金的芯和壳模的组合物,以及用于从这种合金制备组分的铸造工艺。 该组合物含有哈夫尼亚的烧结颗粒材料和至少一种另外的金属氧化物,其量可以产生含有至多70摩尔%的铪的陶瓷组合物,其中附加的金属氧化物是稀土氧化物,烧结颗粒材料包含第一 第二相是固溶体中的稀土氧化物和铪,第二相是稀土氧化物和铪的化合物,第二相与反应性金属合金的反应性低于第一相 。

    MATERIAL USED TO COMBAT THERMAL EXPANSION RELATED DEFECTS IN HIGH TEMPERATURE CASTING PROCESSES
    79.
    发明申请
    MATERIAL USED TO COMBAT THERMAL EXPANSION RELATED DEFECTS IN HIGH TEMPERATURE CASTING PROCESSES 审中-公开
    用于加热高温铸造工艺相关缺陷的热膨胀材料

    公开(公告)号:US20090114365A1

    公开(公告)日:2009-05-07

    申请号:US12266392

    申请日:2008-11-06

    摘要: An additive to foundry sand molding and core aggregates is used to produce sand cores and molds. The additive produces a sand-based foundry molding and core aggregate which resists the formation of some of the defects commonly associated with the production of castings produced by silica sand-based molding and core aggregates. In particular, the additive improves the quality of castings poured at temperatures higher than those of the pouring temperatures of molten iron, such as in steel castings and in iron castings with “hot spots.”

    摘要翻译: 使用铸造砂模和芯骨料的添加剂来生产砂芯和模具。 该添加剂产生一种基于砂的铸造模制和芯骨料,其抵抗通常与通过硅砂基成型和芯聚集体生产的铸件生产相关的一些缺陷的形成。 特别地,添加剂提高了浇铸温度高于铁水浇铸温度的铸件的质量,例如在钢铸件中和在具有“热点”的铁铸件中。