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    Carbon bonded refractory bodies
    1.
    发明授权
    Carbon bonded refractory bodies 失效
    碳粘结耐火材料

    公开(公告)号：US4871698A

    公开(公告)日：1989-10-03

    申请号：US120733

    申请日：1987-11-09

    申请人： Mark K. Fishler ,  Dale B. Hoggard

    发明人： Mark K. Fishler ,  Dale B. Hoggard

    IPC分类号： C04B35/597

    CPC分类号： C04B35/597

    摘要： The invention is directed to improved carbon containing refractory compositions and sintered bodies made therefrom which are particularly resistant to slag and metal erosion and to thermal shock. This is achieved by combining grains or powders of SiAlON and/or silicon nitride with elemental carbon in the form of graphite, carbon black or charcoal. The particulate materials are mixed with a carbonaceous binder such as resin or pitch, pressed to shape and fired in a reducing atmosphere. Small amounts of antioxidants are also added to protect the carbon bond phase against slag attack. Additional amounts of a less expensive refractory grain or powder are also optionally added to the mix to dilute the more expensive SiAlON and/or silicon nitride.

    摘要翻译： 本发明涉及改进的含碳耐火组合物和由其制成的烧结体，其特别是耐渣和金属侵蚀以及热冲击。 这是通过将SiAlON和/或氮化硅的晶粒或粉末与石墨，炭黑或木炭形式的元素碳组合来实现的。 将颗粒材料与碳质粘合剂如树脂或沥青混合，在还原气氛中压制成形并烧制。 还加入少量的抗氧化剂以保护碳结合相免受熔渣侵蚀。 还可以将额外量的较便宜的耐火材料颗粒或粉末加入到混合物中以稀释更昂贵的SiAlON和/或氮化硅。

    Prevention of Al.sub.2 O.sub.3 formation in pouring nozzles and the like
    3.
    发明授权
    Prevention of Al.sub.2 O.sub.3 formation in pouring nozzles and the like 失效
    防止倾倒喷嘴等中形成Al2O3

    公开(公告)号：US4870037A

    公开(公告)日：1989-09-26

    申请号：US100080

    申请日：1987-09-23

    申请人： Dale B. Hoggard ,  Han K. Park

    发明人： Dale B. Hoggard ,  Han K. Park

    IPC分类号： B22D41/02 ,  B22D41/54 ,  C04B35/597 ,  C04B35/58

    CPC分类号： B22D41/54 ,  C04B35/597

    摘要： The invention is directed to a lining composition for submerged entry pouring nozzles and like shapes used in the continuous casting of metals, particularly aluminum killed, low carbon steels. The lining prevents harmful buildup of alumina and other oxides within the nozzle bore which may cause premature nozzle clogging. The nozzle liner comprises a carbon-bonded, SiAlON-graphite refractory material. Small amounts of antioxidants and additional amounts of less expensive refractory grain or powder are also added to dilute the more expensive SiAlON material.

    Composite material
    4.
    发明授权
    Composite material 有权
    复合材料

    公开(公告)号：US06667263B1

    公开(公告)日：2003-12-23

    申请号：US09856218

    申请日：2002-11-14

    申请人： Philippe Guillo ,  Dale B. Hoggard

    发明人： Philippe Guillo ,  Dale B. Hoggard

    IPC分类号： C04B355833

    CPC分类号： C04B35/593 ,  B22D11/0657 ,  C04B35/58014 ,  C04B35/58028 ,  C04B35/581 ,  C04B35/583 ,  C04B35/645

    摘要： The present invention provides a composite pressure-sintered material comprising a continuous phase of hexagonal boron nitride and, dispersed therein, a second material comprising (a) at least one metal nitride selected from the group consisting of silicon, aluminium and titanium nitrides and (b) at least one stable metal oxide; wherein the amount of metal oxide is such that the second material does not contain more than 35% by weight of oxygen. This material possesses a low thermal expansion coefficient and therefore reveals good thermal shock resistance. Another characteristic of this material is its low wettability by molten steel which is thus responsible for excellent chemical resistance to liquid metal. Finally, this material is exceptionally mechanical wear resistant.

    摘要翻译： 本发明提供一种复合压力烧结材料，其包含六方晶系氮化硼的连续相，并分散在其中，第二材料包含（a）至少一种选自硅，铝和氮化钛​​的金属氮化物和（b ）至少一种稳定的金属氧化物; 其中所述金属氧化物的量使得所述第二材料不含有超过35重量％的氧。 该材料具有低热膨胀系数，因此显示出良好的耐热冲击性。 该材料的另一个特征是其由钢水引起的低润湿性，因此对液态金属具有优异的耐化学性。 最后，这种材料特别机械耐磨。