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7 条记录 (耗时 0.018 秒)

    Process for preventing contamination of high temperature melts
    2.
    发明授权
    Process for preventing contamination of high temperature melts 失效
    防止高温熔体污染的工艺

    公开(公告)号：US4926439A

    公开(公告)日：1990-05-15

    申请号：US404398

    申请日：1989-09-07

    申请人： Neil A. Johnson ,  Russell S. Miller ,  Gordon B. Hunter

    发明人： Neil A. Johnson ,  Russell S. Miller ,  Gordon B. Hunter

    IPC分类号： C22B9/22 ,  F27B14/04 ,  F27B14/06 ,  H01J37/305

    CPC分类号： H01J37/305

    摘要： A method of reducing "fall back" contamination caused by high intensity heating of metals is taught. Splatter, vapor droplets and particulate matter resulting from the high intensity heating is repelled to avoid return to the melt. An electric field is established above the heating zone to repel the vapor droplets and particles from at least one charged electrode disposed above the surface where high intensity heat is applied to a metal surface.

    摘要翻译： 教导了一种减少金属高强度加热引起的“回落”污染的方法。 由高强度加热产生的飞溅物，蒸气滴和颗粒物质被排斥以避免返回熔体。 在加热区之上建立一个电场，以将至少一个带电电极的蒸气滴和颗粒排斥到设置在高强度热被施加到金属表面的表面之上。

    Method and apparatus for casting an electron beam melted metallic material in ingot form
    4.
    发明授权
    Method and apparatus for casting an electron beam melted metallic material in ingot form 失效
    铸造电子束熔融金属材料的方法和装置

    公开(公告)号：US5273102A

    公开(公告)日：1993-12-28

    申请号：US988362

    申请日：1992-12-09

    申请人： Robert D. Lillquist ,  Charles B. Adasczik ,  Gordon B. Hunter ,  Richard G. Menzies

    发明人： Robert D. Lillquist ,  Charles B. Adasczik ,  Gordon B. Hunter ,  Richard G. Menzies

    IPC分类号： B22D11/11 ,  B22D23/06 ,  B22D11/16 ,  B22D27/02

    CPC分类号： B22D11/11 ,  B22D23/06

    摘要： A method and apparatus for casting a molten metallic material in ingot form are provided wherein the molten metallic material is transported to the ingot mold and an upper surface temperature and temperature distribution of the molten metal pool in the casting mold are measured by an imaging radiometer which is disposed external to a vacuum chamber enclosing the ingot mold, and is disposed to view the ingot pool surface through a sight port. At least one electron beam gun is employed to direct a stream of electrons at the ingot pool surface, the intensity of which is selectively modulated and the impingement of the stream of electrons is simultaneously selectively positioned in order to maintain a desired preselected mold pool surface temperature and temperature distribution thereby yielding a preselected metallurgical structure in the solidified ingot. The imaging radiometer may provide a video signal as an output, and may be connected to a video analyzer and video monitor which are used to provide an image of the surface temperature and temperature distribution, enabling an operator to control the electron beam gun in performing the ingot casting method.

    摘要翻译： 提供一种用于铸造锭状熔融金属材料的方法和装置，其中熔融的金属材料被输送到锭铸模，并且通过成像辐射计测量铸模中的熔融金属池的上表面温度和温度分布， 设置在包围铸锭模具的真空室的外部，并且设置成通过视口观察铸锭池表面。 使用至少一个电子束枪来引导晶锭池表面的电子流，其强度被选择性地调制并且电子流的冲击同时被选择性地定位，以便保持期望的预选模具池表面温度 和温度分布，从而在固化锭中产生预选的冶金结构。 成像辐射计可以提供视频信号作为输出，并且可以连接到用于提供表面温度和温度分布的图像的视频分析仪和视频监视器，使得操作者能够控制电子束枪执行 锭铸造方法。

    Method and apparatus for casting an arc melted metallic material in ingot form
    7.
    发明授权
    Method and apparatus for casting an arc melted metallic material in ingot form 失效
    铸锭铸造电弧熔化金属材料的方法和装置

    公开(公告)号：US5273101A

    公开(公告)日：1993-12-28

    申请号：US710616

    申请日：1991-06-05

    申请人： Robert D. Lillquist ,  Gordon B. Hunter ,  Richard G. Menzies

    发明人： Robert D. Lillquist ,  Gordon B. Hunter ,  Richard G. Menzies

    IPC分类号： B22D9/00 ,  B22D11/04 ,  B22D11/041 ,  B22D11/11 ,  B22D23/00 ,  B22D23/06 ,  C22B9/20 ,  C22F3/00 ,  B22D11/16 ,  B22D27/02

    CPC分类号： B22D23/06 ,  B22D11/11

    摘要： A method and apparatus for casting a molten metallic material in ingot form are provided wherein the molten metallic material is transported to the ingot mold and an upper surface temperature and temperature distribution of the molten metal pool in the casting mold are measured by an imaging radiometer which is disposed external to an inert gas filled chamber enclosing the ingot mold, and is disposed to view the ingot pool surface through a sight port. At least one plasma arc torch is employed to direct an arc at the ingot pool surface, the intensity of which is selectively modulated and the impingement of the arc is simultaneously selectively positioned in order to maintain a desired preselected mold pool surface temperature and temperature distribution thereby yielding a preselected metallurgical structure in the solidified ingot. The imaging radiometer may provide a video signal as an output, and may be connected to a video analyzer and video monitor which are used to provide an image of the surface temperature and temperature distribution, enabling an operator to control the plasma arc torch in performing the ingot casting method.