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194 条记录 (耗时 0.021 秒)

    Vessel outlet
    11.
    发明授权
    Vessel outlet 失效
    船只出口

    公开(公告)号：US5603859A

    公开(公告)日：1997-02-18

    申请号：US84209

    申请日：1993-07-06

    申请人： Roger Wallis

    发明人： Roger Wallis

    IPC分类号： B22D41/14 ,  B22D41/08

    CPC分类号： B22D41/14

    摘要： A rotary valve for use in the release of a molten solid from a vessel comprises a valve member having a passage, inlets to the passage being present in the head of the member. The valve member mates with a wall of a seating member, the wall having a taller first section and a lower second section selected to close off or open the inlets, respectively. The wall portions are shaped relative to the surfaces of the member to avoid metal freezing and the parts sticking. The passage includes ribs to cause the stream to emerge with parallel sides.

    摘要翻译： PCT No.PCT / GB92 / 00080 Sec。 371日期：1993年7月6日 102（e）日期1993年7月6日PCT提交1992年1月14日PCT公布。 公开号WO92 / 12815 日期1992年8月6日用于从容器中释放熔融固体的旋转阀包括具有通道的阀构件，通道的入口存在于构件的头部中。 阀构件与座构件的壁配合，壁具有较高的第一部分和下部第二部分，分别被选择为关闭或打开入口。 壁部分相对于构件的表面成形，以避免金属冻结并且部件粘附。 通道包括肋，以使流体平行地出现。

    Ceramic material
    12.
    发明授权
    Ceramic material 失效
    陶瓷材料

    公开(公告)号：US5364570A

    公开(公告)日：1994-11-15

    申请号：US973749

    申请日：1992-11-09

    申请人： Robert Chadwick ,  Carl Siviter ,  Anthony D. Farmer

    发明人： Robert Chadwick ,  Carl Siviter ,  Anthony D. Farmer

    IPC分类号： B28B1/00 ,  B28B7/34 ,  B28B7/42 ,  C04B35/111 ,  C04B35/14 ,  C04B35/185 ,  C04B35/624 ,  C04B38/08 ,  F27D1/00 ,  F27D5/00

    CPC分类号： F27D1/0006 ,  B28B1/00 ,  B28B7/348 ,  B28B7/42 ,  C04B35/111 ,  C04B35/14 ,  C04B35/185 ,  C04B35/624 ,  C04B38/08 ,  F27D5/00

    摘要： A lightweight ceramic material is provided, useful for example as thermal insulation, kiln furniture or for metallurgical applications.Accordingly, a lightweight fired ceramic material comprises a set porous material in the form of a freeze-gelled ceramic sol composition containing hollow microspheres bonded together in a ceramic matrix.A method of making a lightweight fired ceramic shaped product is also provided in which a freeze-gellable ceramic sol composition is formed containing hollow microspheres, the composition is placed in a tool (21) of high thermal conductivity, the tool is cooled to irreversibly gel the sol composition, the monolith so formed is demoulded and allowed to thaw and is then fired to form a product comprising the microspheres bonded in a ceramic matrix.

    摘要翻译： 提供了一种轻质陶瓷材料，可用于例如隔热，窑具或冶金应用。 因此，重量轻的烧结陶瓷材料包括一种凝固的多孔材料，其形式为含有在陶瓷基质中结合在一起的中空微球的冷冻胶凝陶瓷溶胶组合物。 还提供了制备轻质烧制陶瓷成形产品的方法，其中形成含有中空微球的可冻结凝胶的陶瓷溶胶组合物，该组合物放置在高导热性的工具（21）中，将该工具冷却至不可逆地凝胶 该溶胶组合物，如此形成的整料被脱模并允许解冻，然后烧制以形成包含结合在陶瓷基体中的微球的产品。

    Production of foundry sand moulds and cores
    13.
    发明授权
    Production of foundry sand moulds and cores 失效
    铸造砂模和芯的生产

    公开(公告)号：US5162393A

    公开(公告)日：1992-11-10

    申请号：US691397

    申请日：1991-04-25

    申请人： John S. Griffin ,  Thomas A. Penko

    发明人： John S. Griffin ,  Thomas A. Penko

    IPC分类号： B22C9/12 ,  B22C1/16 ,  B22C1/22 ,  C08L61/10

    CPC分类号： B22C9/123 ,  B22C1/162

    摘要： Foundry sand cores are produced by a method comprising the steps of:(1) providing a core box to contain the core(2) injecting into the core box a mixture of sand and a binder capable of being cured by means of carbon dioxide gas so as to form the core(3) passing carbon dioxide gas under pressure into the core box so as to fill the core box(4) holding the core in contact with the carbon dioxide gas so as to cure the binder(5) releasing the pressure and allowing carbon dioxide gas to escape from the core box and(6) removing the cured core from the core box.The method can also be used to produce moulds and is of particular use in the production of cores or moulds from a mixture of sand and a binder consisting of an alkaline aqueous solution of a phenol-formaldehyde resin and an oxyanion such as borate capable of forming a stable complex with the resin.

    摘要翻译： 通过包括以下步骤的方法制造铸造砂芯：（1）提供芯盒以容纳将芯（2）注入到芯盒中的砂浆和能够通过二氧化碳气体固化的粘合剂的混合物的核心 为了形成将核心（3）在压力下通入二氧化碳气体到核心箱中，以填充保持芯与二氧化碳气体接触的芯盒（4），以使粘合剂（5）固化释放压力 并且允许二氧化碳气体从芯盒中逸出，和（6）从芯盒中去除固化的芯。 该方法也可用于生产模具，并且特别用于由砂和粘合剂的混合物的混合物生产核心或模具，所述混合物由酚 - 甲醛树脂的碱性水溶液和能够形成的硼酸盐的氧阴离子组成 与树脂稳定的配合物。

    Metallurgical flux compositions
    16.
    发明授权
    Metallurgical flux compositions 失效
    冶金助焊剂组合物

    公开(公告)号：US5028257A

    公开(公告)日：1991-07-02

    申请号：US513860

    申请日：1990-04-24

    申请人： Andrew J. Tomkins ,  Royston J. Phillips

    发明人： Andrew J. Tomkins ,  Royston J. Phillips

    IPC分类号： B22D11/10 ,  B22D11/108 ,  B22D11/111 ,  C21C7/076

    CPC分类号： B22D11/111

    摘要： A metallurgical flux composition comprising calcium oxide, alumina, magnesium oxide and silica contains 22-35% by weight magnesium oxide and has a weight ratio of calcium oxide to magnesium oxide of from 0.6:1 to 2.5:1. The preferred composition contains 28-42% by weight calcium oxide, 13-21% by weight alumina, 22-35% by weight magnesium oxide and 3-8% by weight silica, preferably has a calcium oxide to magnesium oxide weight ratio of from 0.8:1 to 1.9:1 and preferably has a calcium oxide to silica weight ratio of from 6.0:1 to 7.5:1. The flux composition is particularly useful as a tundish cover in the continuous casting of steel.

    摘要翻译： 包含氧化钙，氧化铝，氧化镁和二氧化硅的冶金助熔剂组合物含有22-35重量％的氧化镁，氧化钙与氧化镁的重量比为0.6:1至2.5:1。 优选的组合物包含28-42重量％的氧化钙，13-21重量％的氧化铝，22-35重量％的氧化镁和3-8重量％的二氧化硅，优选氧化钙与氧化镁的重量比为 0.8：1至1.9：1，优选氧化钙与二氧化硅的重量比为6.0：1至7.5：1。 助焊剂组合物特别可用作钢的连续铸造中的中间包。

    Pouring tubes
    17.
    发明授权
    Pouring tubes 失效
    浇注管

    公开(公告)号：US4953762A

    公开(公告)日：1990-09-04

    申请号：US248987

    申请日：1988-09-26

    申请人： Jean P. Villani

    发明人： Jean P. Villani

    IPC分类号： B22D41/54

    CPC分类号： B22D41/54

    摘要： Pouring tubes for use between a ladle and tundish or tundish and mould in continuous casting operations are formed of an inner refractory tube (2) with an outer reinforcing fibrous mat (3) applied around the tube. The fibrous mat may be formed by a helically wound strip and may be impregnated with particulate refractory and optionally a binder to improve the strength and resistance of the composite tube. Metal support means may be attached near one end of the tube.

    Coating expendable substrates which contact molten metal
    19.
    发明授权
    Coating expendable substrates which contact molten metal 失效
    涂料消耗性基材接触熔融金属

    公开(公告)号：US4873114A

    公开(公告)日：1989-10-10

    申请号：US630238

    申请日：1984-07-12

    申请人： Jeffrey A. Harris

    发明人： Jeffrey A. Harris

    IPC分类号： B05B5/047 ,  B05D1/06 ,  B22C3/00 ,  B22C23/02 ,  B22D41/02 ,  B05D1/04

    CPC分类号： B05B5/047 ,  B22C23/02 ,  B22D41/02

    摘要： An expendable substrate which in use contacts molten metal, for example a foundry mould or core or ladle lining, is coated with a coherent layer of refractory particles by tribo-electrically charging refractory particles coated with an organic binder, the coated particles having an electrical resistivity of at least 10.sup.10 ohm. cm. at 10kv, earthing the substate and bringing the charged particles into contact with the earthed substrate. Suitable binders are thermoplastic resins, thermosetting resins and waxes and the quantity of binder in the binder coated particles is usually less than 10% by weight.

    摘要翻译： 使用中的一次性消耗基材接触熔融金属，例如铸造模具或芯或钢包衬里，通过摩擦带电涂覆有机粘合剂的耐火材料粒子涂覆耐火材料粒子的粘附层，涂覆的颗粒具有电阻率 至少为1010欧姆。 厘米。 接地10分钟，使带电粒子与接地衬底接触。 合适的粘合剂是热塑性树脂，热固性树脂和蜡，并且粘合剂涂覆颗粒中的粘合剂的量通常小于10重量％。