利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.008 秒)

    Process and apparatus for minimizing foam formation during free falling of molten metal into moulds, launders or other containers
    2.
    发明公开
    Process and apparatus for minimizing foam formation during free falling of molten metal into moulds, launders or other containers 失效
    自由下落在模具中浇注流，浇铸通道或其它容器中的方法和装置用于防止泡沫形成。

    公开(公告)号：EP0150226A1

    公开(公告)日：1985-08-07

    申请号：EP83113078.6

    申请日：1983-12-23

    申请人： NORANDA INC.

    发明人： Gervais, Edouard ,  Levert, Henri ,  Smyth, Laurence C. ,  Deep, George

    IPC分类号： B22D27/00 ,  B22D1/00 ,  B22D21/02 ,  B22D5/04

    CPC分类号： B22D5/04 ,  B22D1/00 ,  B22D21/027 ,  B22D27/003

    摘要： A process for minimizing foam formation on the surface of molten metal which forms a foam during free falling of molten metal, such as molten zinc, into moulds, launders or other containers is disclosed. The process comprises maintaining the molten metal during free falling thereof under an essentially non-oxidizing atmosphere so as to prevent entrainment of sufficient oxygen into the molten metal by the falling stream to form an excessive amount of bubbles having a tenacious oxidized film and which do not collapse when they float to the surface of the molten metal but rather produce undesirable foam on the surface. The process is preferably carried out on a continuous casting machine by providing a cover plate mounted at a predetermined distance above the cover plate and having an aperture therein for casting molten metal. The cover plate extends before and after such aperture and has a predetermined number of gas inlet ports from feeding a non-oxidizing gas through the cover plate to progressively develop a non-oxidizing atmosphere in the container as they approach the aperture in the cover and to maintain such atmosphere in the containers as they pass the aperture.

    摘要翻译： 如熔融锌，到模具中，流槽或其它容器中的游离缺失光盘：一种用于哪个期间熔融金属，颜色的自由下落形成泡沫熔融金属的表面上最小化泡沫形成过程。 该过程包括基本上非氧化性气氛下它们的自由下落的过程中保持熔融金属，从而防止氧气充足的夹带到所述熔融金属由下降流以形成具有顽强氧化膜的气泡的过量和不 塌陷当他们浮到熔融金属的表面，而是在表面上产生不希望的泡沫。 该方法优选通过提供安装在盖板上方预定距离的盖板，并在孔在其中具有用于铸造熔融金属进行的连续铸造机上。 盖板之前，谋求孔后延伸，并且具有气体导入口的预定数量从通过盖板供给非氧化性气体逐步发展在所述容器中的非氧化性气氛，因为它们接近孔在盖和 保持检查气氛在所述容器，因为他们通过该孔。