Rapid induction melting of metal-matrix composite materials
    1.
    发明授权
    Rapid induction melting of metal-matrix composite materials 失效
    金属基复合材料快速感应熔炼

    公开(公告)号:US06250363B1

    公开(公告)日:2001-06-26

    申请号:US09131139

    申请日:1998-08-07

    IPC分类号: B22D1914

    摘要: A composite material is rapidly melted by furnishing a pre-wetted composite material in the form of granules, placing the granules into an induction coil, and powering the induction heater to melt the metal matrix portion of the granules to form a molten mixture. High power inputs to the induction coil may be used, so that the granules are rapidly heated to their melting point and to temperatures above the melting point, from which the molten mixture may be cast. Because of the rapid heating, otherwise-reactive composite materials may be prepared by melting in air.

    摘要翻译: 通过提供颗粒形式的预先润湿的复合材料将复合材料快速熔化,将颗粒放置在感应线圈中,并为感应加热器供电以熔化颗粒的金属基体部分以形成熔融混合物。 可以使用到感应线圈的高功率输入,使得颗粒被快速加热到它们的熔点和高于熔融混合物的熔点以上的温度。 由于快速加热,否则反应性复合材料可以通过在空气中熔化来制备。

    Apparatus for continuously preparing castable metal matrix composite
material
    2.
    发明授权
    Apparatus for continuously preparing castable metal matrix composite material 失效
    用于连续制备浇注金属基复合材料的设备

    公开(公告)号:US5531425A

    公开(公告)日:1996-07-02

    申请号:US192950

    申请日:1994-02-07

    摘要: A method and apparatus for preparing a continuous flow of castable composite materials of nonmetallic particles in a metallic matrix, wherein particles are mixed into a molten metallic alloy to wet the molten metal to the particles, and the particles and metal are sheared past each other to promote wetting of the particles by the metal. The mixing occurs while minimizing the introduction of gas into the mixture, and while minimizing the retention of gas at the particle-liquid interface. Mixing is done at or below a maximum temperature whereat the particles do not substantially chemically degrade in the molten metal during the time required for processing, and casting is done at a temperature sufficiently high that there is no solid metal present in the melt.

    摘要翻译: 一种用于制备金属基体中的非金属颗粒的可浇注复合材料的连续流动的方法和装置,其中将颗粒混合到熔融金属合金中以将熔融金属润湿至颗粒,并且将颗粒和金属彼此相互剪切, 促进金属对颗粒的润湿。 混合发生在将气体引入混合物中最小化的同时,同时使气体在颗粒 - 液体界面处的保留最小化。 混合在等于或低于最高温度或低于处理所需时间内熔融金属中基本上不会化学降解的最高温度,并且在足够高的温度下进行铸造,使得在熔体中不存在固体金属。

    Filtration of molten material
    3.
    发明授权
    Filtration of molten material 失效
    熔融材料过滤

    公开(公告)号:US5322546A

    公开(公告)日:1994-06-21

    申请号:US979524

    申请日:1992-11-23

    摘要: An apparatus for filtering molten material, such as a molten metal-ceramic particle mixture, includes a porous cloth filter located so that the mixture must pass through the cloth filter, and a mechanical filter shaker that prevents the accumulation of filtered solids on the porous cloth filter. Where a further degree of filtration is required, there is a second filter located so that material leaving the porous cloth filter passes through the second filter after it passes through the porous cloth filter, and a mechanism that prevents an accumulation of filtered solids on the second filter. The second filter is desirably a porous media filter.

    摘要翻译: 用于过滤熔融材料(例如熔融金属 - 陶瓷颗粒混合物)的设备包括多孔布过滤器,其布置成使得混合物必须通过布过滤器,以及机械过滤器振动器,其防止过滤固体在多孔布上的积聚 过滤。 在需要进一步程度的过滤的情况下,存在第二过滤器,使得离开多孔布过滤器的材料在穿过多孔布过滤器之后通过第二过滤器,以及防止过滤固体在第二过滤器上积聚的机构 过滤。 第二过滤器理想地是多孔介质过滤器。

    Cast composite material having a matrix containing a stable
oxide-forming element
    4.
    发明授权
    Cast composite material having a matrix containing a stable oxide-forming element 失效
    具有含有稳定的氧化物形成元素的基体的铸造复合材料

    公开(公告)号:US4943490A

    公开(公告)日:1990-07-24

    申请号:US391087

    申请日:1989-08-07

    摘要: A cast composite material is prepared from a modified aluminum-containing matrix and reinforcement particles mixed into the matrix. From about 15 to about 130, preferably from about 20 to about 50, parts per million of an element, preferably beryllium, that forms a more stable oxide than magnesium oxide is included in the matrix alloy. The stable-oxide-forming element reduces the amount and thickness of the aluminum oxide and other oxides formed at the surface of the melt, which otherwise may be mixed into the melt to cause microstructural irregularities in the matrix of the cast composite material.

    摘要翻译: 铸造复合材料由改性的含铝基体和混合到基质中的增强颗粒制备。 在基质合金中包含从约15至约130,优选约20至约50重量份的形成比氧化镁更稳定的氧化物的元素(优选铍)。 稳定氧化物形成元件减少了在熔体表面形成的氧化铝和其它氧化物的量和厚度,否则其可能被混合到熔体中以引起铸造复合材料的基质中的微结构不规则。

    Controlled addition of lithium to molten aluminum
    5.
    发明授权
    Controlled addition of lithium to molten aluminum 失效
    控制加入锂到熔融铝

    公开(公告)号:US4761266A

    公开(公告)日:1988-08-02

    申请号:US64431

    申请日:1987-06-22

    申请人: Richard S. Bruski

    发明人: Richard S. Bruski

    IPC分类号: C22C1/02 C22C1/00 C22C21/00

    CPC分类号: C22C1/026

    摘要: Lithium feed to an aluminum-lithium alloy production system is achieved at a highly controlled rate by advancing a plunger at a predetermined volumetric rate into a body of molten lithium retained in a holding vessel to displace the lithium toward an overflow port through which it is fed into a mixing vessel where it is combined with molten aluminum. Control of the aluminum feed rate is achieved by maintaining a constant head height upstream of an orifice. The thus metered streams of molten lithium and aluminum are then combined in a vortex bowl, whose outlet is then fed to a casting station.

    Apparatus and process for casting metal matrix composite materials
    6.
    发明授权
    Apparatus and process for casting metal matrix composite materials 失效
    铸造金属基复合材料的设备和工艺

    公开(公告)号:US6015528A

    公开(公告)日:2000-01-18

    申请号:US610671

    申请日:1996-03-04

    摘要: A composite material mixture of free flowing reinforcement particles in a molten metal is solidified at a cooling rate greater than about 15.degree. C. per second between the liquidus and solidus temperatures of the matrix alloy. This high cooling rate imparts a homogeneous structure to the solid composite material. Care is taken to avoid the introduction of gas bubbles into the molten composite material while the mixture is stirred to prevent segregation of the particles. For viscous melts, an artificial surface layer such as a fiberglass blanket may be used to prevent entrapment of bubbles during pre-casting stirring. Additionally, gas bubbles are removed from the molten mixture by filtering and skimming.

    摘要翻译: 在熔融金属中的自由流动的增强颗粒的复合材料混合物在基质合金的液相线和固相线温度之间以大于约15℃/秒的冷却速率固化。 这种高冷却速率赋予固体复合材料均匀的结构。 注意避免在熔融的复合材料中引入气泡,同时搅拌混合物以防止颗粒分离。 对于粘性熔体,可以使用诸如玻璃纤维毯的人造表面层来防止在预浇铸搅拌期间夹带气泡。 此外,通过过滤和撇取从熔融混合物中除去气泡。

    Apparatus and process for casting metal matrix composite materials
    7.
    发明授权
    Apparatus and process for casting metal matrix composite materials 失效
    铸造金属基复合材料的设备和工艺

    公开(公告)号:US5299724A

    公开(公告)日:1994-04-05

    申请号:US553111

    申请日:1990-07-13

    摘要: A composite material mixture of free flowing reinforcement particles in a molten metal is solidified at a cooling rate greater than about 15.degree. C. per second between the liquidus and solidus temperatures of the matrix alloy. This high cooling rate imparts a homogeneous structure to the solid composite material. Care is taken to avoid the introduction of gas bubbles into the molten composite material while the mixture is stirred to prevent segregation of the particles. For viscous melts, an artificial surface layer such as a fiberglass blanket may be used to prevent entrapment of bubbles during pre-casting stirring. Additionally, gas bubbles are removed from the molten mixture by filtering and skimming.

    摘要翻译: 在熔融金属中的自由流动的增强颗粒的复合材料混合物在基质合金的液相线和固相线温度之间以大于约15摄氏度/秒的冷却速率固化。 这种高冷却速率赋予固体复合材料均匀的结构。 注意避免在熔融的复合材料中引入气泡,同时搅拌混合物以防止颗粒分离。 对于粘性熔体,可以使用诸如玻璃纤维毯的人造表面层来防止在预浇铸搅拌期间夹带气泡。 此外,通过过滤和撇取从熔融混合物中除去气泡。

    Cast composite material having a matrix containing a stable
oxide-forming element
    9.
    发明授权
    Cast composite material having a matrix containing a stable oxide-forming element 失效
    具有含有稳定的氧化物形成元素的基体的铸造复合材料

    公开(公告)号:US5076340A

    公开(公告)日:1991-12-31

    申请号:US516341

    申请日:1990-04-30

    IPC分类号: C22C21/00 C22C32/00 C22C49/06

    摘要: A cast composite material is prepared from a modified aluminum-containing matrix and reinforcement particles mixed into the matrix. From about 15 to about 130, preferably from about 20 to about 50, parts per million of an element, preferably beryllium, that forms a more stable oxide than magnesium oxide is included in the matrix alloy. The stable-oxide-forming element reduces the amount and thickness of the aluminum oxide and other oxides formed at the surface of the melt, which otherwise may be mixed into the melt to cause microstructural irregularities in the matrix of the cast composite material.

    摘要翻译: 铸造复合材料由改性的含铝基体和混合到基质中的增强颗粒制备。 在基质合金中包含从约15至约130,优选约20至约50重量份的形成比氧化镁更稳定的氧化物的元素(优选铍)。 稳定氧化物形成元件减少了在熔体表面形成的氧化铝和其它氧化物的量和厚度,否则其可能被混合到熔体中以引起铸造复合材料的基质中的微结构不规则。