Plant for casting metal with particles suspended therein
    271.
    发明授权
    Plant for casting metal with particles suspended therein 失效
    用于铸造具有悬浮在其中的颗粒的金属的装置

    公开(公告)号:US06315944B1

    公开(公告)日:2001-11-13

    申请号:US09486387

    申请日:2000-02-28

    CPC classification number: B22D1/00 B22D18/04 C22C1/1036 C22C2001/1047

    Abstract: Molten metal (6) in a furnace (5) and containing particles of solid material (not shown) in suspension is cast in moulds (1) conveyed continuously past the mould-filling station shown by a conveyor (4). To maintain the particles in suspension and keep the metal (6) homogeneous throughout the furnace (5), a paddle-wheel rotor (10) driven by a motor (13) keeps the molten metal in constant movement. A curved guide vane (14) is shaped, placed and oriented so as to divert some of the centrifugal flow from the rotor (10) towards the delivery tube (8) for the moulds (1), thus ensuring that the tube (8) is supplied with freshly-agitated metal.

    Abstract translation: 在炉(5)中的熔融金属(6)在悬浮液中含有固体材料(未示出)的颗粒被浇铸在连续通过由输送机(4)所示的注模站所输送的模具(1)中。 为了将颗粒保持在悬浮状态并使金属(6)在整个炉(5)中均匀,由马达(13)驱动的桨轮转子(10)使熔融金属保持恒定运动。 弯曲导向叶片(14)被成形,放置和定向,以便将一些离心流从转子(10)转移到用于模具(1)的输送管(8),从而确保管(8) 供应新鲜搅拌的金属。

    Process for producing a component and a component produced thereby having particular use in vehicle disc brakes
    272.
    发明授权
    Process for producing a component and a component produced thereby having particular use in vehicle disc brakes 失效
    用于制造由此产生的部件和部件的方法特别用于车辆盘式制动器

    公开(公告)号:US06298957B1

    公开(公告)日:2001-10-09

    申请号:US09511075

    申请日:2000-02-23

    Abstract: A component is made, in regions, of a ceramic-metal composite material. A porous sacrificial body produced from ceramic precursors is filled with softened metal and/or a metallic alloy at a predeterminable filling temperature at or above the softening temperature of the filling metal and under superatmospheric pressure. The filled sacrificial body is heated to or above a reaction temperature which is higher than the filling temperature, where a reaction between the filling metal (FMe) and the metal of the ceramic of the sacrificial body (CMe) is carried out, forming the ceramic-metal composite material comprising a ceramic phase and a metallic phase. The ceramic phase comprises CMemBx and/or CMenCy and/or CMeoCN and FMepO3, and the metallic phase comprises an intermetallic compound of a metal of the ceramic (CMe) and a filling metal (FMe). The sacrificial body is filled with the filling metal (FMe) during pressure casting of the component. A shape at least close to the final shape of the component, comprising a filled sacrificial body and the intermediate element(s) free of the sacrificial body, is cast by the pressure casting tool, and the component after casting is complete is heated to or above the reaction temperature in the region of the sacrificial body.

    Abstract translation: 在陶瓷 - 金属复合材料的区域中制备组分。 由陶瓷前体制成的多孔牺牲体在处于填充金属的软化温度以上且处于超大气压下的可预料的填充温度下填充软化金属和/或金属合金。 将填充的牺牲体加热到或高于高于填充温度的反应温度,其中填充金属(FMe)和牺牲体(CMe)的陶瓷的金属之间发生反应,形成陶瓷 金属复合材料,其包含陶瓷相和金属相。 陶瓷相包含CMemBx和/或CMenCy和/或CMeoCN和FMepO3,金属相包含陶瓷(CMe)金属和填充金属(FMe)的金属间化合物。 牺牲体在组件的压铸过程中填充有填充金属(FMe)。 至少接近零件的最终形状的形状,包括填充的牺牲体和不含牺牲体的中间元件,通过压力铸造工具铸造,并且铸造完成后的部件被加热到 高于牺牲体区域的反应温度。

    Method of casting a product
    274.
    发明申请
    Method of casting a product 失效
    铸造产品的方法

    公开(公告)号:US20010013401A1

    公开(公告)日:2001-08-16

    申请号:US09794358

    申请日:2001-02-28

    CPC classification number: B22D19/08 C22C1/1036 C22C1/1042

    Abstract: An intermediate material is formed by coating at least a half of the surface of a function selecting material having at least one of physical property values that are different from those of a casting metal material forming a cast product with a coating metal material and the casting metal material is cast together with the intermediate material to form a composite body in casting the product.

    Abstract translation: 中间材料通过涂覆具有与形成铸造产品的铸造金属材料不同的物理性能值的至少一种的金属材料和铸造金属的功能选择材料的至少一半表面而形成 材料与中间材料一起铸造以在铸造产品中形成复合体。

    Preparation of metal-matrix composite materials with high particulate loadings by concentration
    275.
    发明授权
    Preparation of metal-matrix composite materials with high particulate loadings by concentration 失效
    通过浓缩制备高颗粒负荷的金属基复合材料

    公开(公告)号:US06257312B1

    公开(公告)日:2001-07-10

    申请号:US09131131

    申请日:1998-08-07

    Abstract: A composite material having less than about 25 volume percent refractory particles in a metal matrix is concentrated to have about 37-45 volume percent refractory particles. The concentrating is accomplished by heating the composite material to melt the matrix, and then contacting the molten composite material to a porous element having an average pore size greater than that of the average particle size. A small pressure differential, on the order of about one atmosphere, is applied across the porous element, so that metal matrix material separates from the composite material and flows through the porous element. The particulate volume fraction in the composite material gradually increases. When the particulate volume fraction exceeds about 37 volume percent, the mass of composite material becomes semi-solid and freestanding. The resulting composite material may be further processed, as by forming to a useful shape or diluting with another matrix material.

    Abstract translation: 在金属基质中具有少于约25体积%的难熔颗粒的复合材料被浓缩以具有约37-45体积%的耐火颗粒。 浓缩通过加热复合材料以熔化基质,然后使熔融的复合材料与平均孔径大于平均粒径的多孔元件接触来实现。 大约一个大气压的小压差施加在多孔元件上,使得金属基质材料与复合材料分离并流过多孔元件。 复合材料中的颗粒体积分数逐渐增加。 当颗粒体积分数超过约37体积%时,复合材料的质量变成半固体和独立的。 所得到的复合材料可以进一步加工,如通过形成有用的形状或用另一种基质材料稀释。

    Preform for magnesium metal matrix composites
    276.
    发明授权
    Preform for magnesium metal matrix composites 有权
    镁金属基复合材料预制件

    公开(公告)号:US06247519B1

    公开(公告)日:2001-06-19

    申请号:US09357161

    申请日:1999-07-19

    Abstract: A process for preparing a preform for use in a metal matrix composite, particularly for a magnesium metal composite, and a metal matrix composite, typically made by squeeze casting, using the preform. In the preform the reinforcing material typically is silicon carbide, boron nitride, carbon or graphite. The binder used in the preform is magnesium fluoride, which avoids the known problems which result from the high reactivity of magnesium metal with other binders, such as silica and alumina, which results in the formation of magnesium oxide in the reinforced composite. The presence of magnesium oxide crystals in the metal matrix adversely affects the properties of the composite.

    Abstract translation: 一种用于制备用于金属基质复合材料,特别是镁金属复合材料的预型件和通常通过挤压铸造制成的金属基质复合材料的方法。 在预制件中,增强材料通常是碳化硅,氮化硼,碳或石墨。 预成型体中使用的粘合剂是氟化镁,其避免了由镁金属与其它粘合剂如二氧化硅和氧化铝的高反应性导致的已知问题,其导致在增强复合材料中形成氧化镁。 金属基体中氧化镁晶体的存在不利地影响复合材料的性能。

    Method for manufacturing castable metal matrix composite bodies and bodies produced thereby
    277.
    发明授权
    Method for manufacturing castable metal matrix composite bodies and bodies produced thereby 失效
    制造铸造金属基体复合体的方法

    公开(公告)号:US06223805B1

    公开(公告)日:2001-05-01

    申请号:US08231574

    申请日:1994-04-22

    Abstract: The present invention relates to a novel method for forming cast metal matrix composite bodies. In particular, the present invention relates to a novel method for forming or recycling metal matrix composite bodies so as to render such bodies in a condition for casting or recasting as a cast metal matrix composite body. Specifically, a scrap metal matrix composite body and preferably a scrap cast metal matrix composite body is placed into a crucible, optionally along with unreinforced matrix metal and/or virgin metal matrix composite material. Whether the scrap and/or virgin materials are placed into the crucible in solid or molten form, the contents of the crucible are ultimately rendered molten to form a composite melt. A means for applying high shearing rates to the composite melt, such as an impeller rotating at high speed is immersed into the composite melt and the composite melt is sheared for a time sufficient to comminute any entrained inclusions such as entrapped oxide skins to a size at which such comminuted inclusions are substantially ameliorated in terms of their effect on the fluidity of the composite melt and the mechanical properties of the subsequent cast metal matrix composite bodies. Upon conclusion of the high intensity shearing process, the high power shearing apparatus is removed from the composite melt and the composite melt is cast using appropriate techniques for casting metal matrix composite material.

    Abstract translation: 本发明涉及一种用于形成铸造金属基体复合体的新方法。 特别地,本发明涉及一种用于形成或再循环金属基体复合体的新方法,以使这些物体成为铸造或重铸的状态,作为铸造金属基体复合体。 具体地说,将废金属基质复合体和优选的废铸金属基质复合体放置在坩埚中,任选地与未增强的基体金属和/或原始金属基质复合材料一起。 废料和/或原始材料是否以固体或熔融形式放入坩埚中,坩埚的内容物最终被熔化形成复合熔体。 将高剪切速率施加到复合熔体的方法,例如高速旋转的叶轮,将其浸入复合熔体中,并将​​复合熔体剪切一段时间,足以将任何夹带的夹杂物(例如截留的氧化皮)粉碎至大小 这些粉碎的夹杂物在其对复合材料熔体流动性的影响和随后的铸造金属基体复合体的机械性能方面基本上得到改善。 在高强度剪切过程结束后,从复合熔体中除去高功率剪切装置,并使用合适的铸造金属基复合材料的技术来铸造复合熔体。

    Process for making a vane for a rotary compressor
    279.
    发明授权
    Process for making a vane for a rotary compressor 失效
    制造旋转式压缩机叶片的方法

    公开(公告)号:US6032720A

    公开(公告)日:2000-03-07

    申请号:US120833

    申请日:1998-07-22

    CPC classification number: C22C1/1036 F01C21/0809

    Abstract: A process of making a vane for a rotary expansible chamber device, comprising the steps of: providing an open vane die having a die cavity, wherein said die cavity comprises a body cavity section corresponding to a body of the vane, a first tip cavity section corresponding to a first tip of the vane, and a second tip cavity section corresponding to a second tip of the vane; providing a preheated, porous carbon preform in the first tip cavity section of the vane die, the preform having a shape corresponding to at least a portion of the first tip cavity section; closing the vane die; injecting a castable admixture comprising a metal alloy and a plurality of inorganic particles into the die cavity and filling the vane die cavity with the injected admixture; impregnating the preform with the metal alloy of the injected admixture, substantially all of the inorganic particles from the injected admixture being filtered out by the preform as the admixture flows into the preform; allowing the castable admixture to solidify, whereby a vane is formed in the die cavity; and removing the vane from the die.

    Abstract translation: 一种制造用于旋转可膨胀室装置的叶片的方法,包括以下步骤:提供具有模腔的开式叶片模头,其中所述模腔包括对应于叶片主体的体腔部分,第一尖端腔部分 对应于所述叶片的第一末端,以及对应于所述叶片的第二尖端的第二末端腔部分; 在所述叶片模具的所述第一尖端腔部分中提供预热的多孔碳预制件,所述预成型件具有对应于所述第一末端腔部分的至少一部分的形状; 关闭叶片模具; 将包含金属合金和多个无机颗粒的可浇铸混合物注入模腔中并用注入的混合物填充叶片模腔; 用注入的混合物的金属合金浸渍预型体,当混合物流入预制件时,基本上所有来自注入的混合物的无机颗粒被预成型件过滤掉; 允许浇注混合物固化,由此在模腔中形成叶片; 并从模具中移除叶片。

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