Porous ceramic structure
    1.
    发明授权
    Porous ceramic structure 失效
    多孔陶瓷结构

    公开(公告)号:US4530864A

    公开(公告)日:1985-07-23

    申请号:US645106

    申请日:1984-08-28

    摘要: A porous ceramic structure adapted in a molten metal container in a way such that the structure pierces the wall of the container for introducing a gas thereinto. The structure comprises a main body made of a porous ceramic material and having a recession on the side adjacent to the outer surface of the container and a sub-body made of a porous ceramic material fitted in the recession of the main body. This ceramic structure enables the operator to make timely judgment for its replacement with new one before it breaks down to cause leakage of molten metal from its container.

    摘要翻译: 一种多孔陶瓷结构,其以熔融金属容器的方式使其结构穿透容器的壁以引入气体。 该结构包括由多孔陶瓷材料制成的主体,并且在与容器的外表面相邻的一侧具有凹陷,以及由安装在主体的凹部中的多孔陶瓷材料制成的子体。 这种陶瓷结构使得操作者能够在发生故障之前及时对其进行更换作出判断,以使熔融金属从容器中泄漏。

    Sliding nozzle plate
    2.
    发明授权
    Sliding nozzle plate 失效
    滑动喷嘴板

    公开(公告)号:US4646950A

    公开(公告)日:1987-03-03

    申请号:US665434

    申请日:1984-10-26

    CPC分类号: C04B35/106 B22D41/32

    摘要: A sliding nozzle plate enjoying outstanding stability to resist wear, spalling, corrosion, and particularly loss due to corrosion is produced by preparing a composition consisting of at least one refractory raw material selected from the group consisting of acidic and/or neutral refractory raw materials, carbon, metal powder, and 2 to 50% by weight, based on the total weight of the composition, of coarse and/or medium particles of an alumina-zirconia-titania mixture of 42 to 79.3% by weight of alumina, 20 to 40% by weight of zirconia, 0.5 to 16% by weight of titania, and the balance to make up 100% by weight and not more than 2% by weight of inevitably entrained elements. The composition is required to have a particle size distribution of 30 to 60% by weight of coarse and medium particles and the balance to make up 100% by weight of fine particles and/or fine powder. The composition is kneaded with a binder, molded in a prescribed shape, and subjected to firing in reducing atmosphere.

    摘要翻译: 通过制备由至少一种选自酸性和/或中性耐火原料的耐火原料组成的组合物,制得具有优异稳定性以抵抗磨损,剥落,腐蚀,特别是腐蚀损失的滑动喷嘴板, 碳,金属粉末和基于组合物总重量的2至50重量%的氧化铝 - 氧化锆 - 二氧化钛混合物的粗颗粒和/或中等颗粒为42至79.3重量%的氧化铝,20至40 氧化锆重量%,氧化钛重量为0.5〜16%,余量为不可避免地携带的元素的100重量%以上2重量%以下。 该组合物需要具有30至60重量%的粗和中等颗粒的粒度分布,余量为100重量%的细颗粒和/或细粉末。 将该组合物用粘合剂捏合,成形为规定形状,并在还原气氛中进行烧成。