Gas stir plug device with visual wear indicator
    2.
    发明授权
    Gas stir plug device with visual wear indicator 失效
    带有视觉磨损指示器的气体搅拌塞装置

    公开(公告)号:US5249778A

    公开(公告)日:1993-10-05

    申请号:US868598

    申请日:1992-04-14

    IPC分类号: B22D1/00 C21C5/44 C21C5/46

    摘要: A stir plug of frusto-conical shape for introducing gas into a mass of molten metal and comprising a plug having an outer core formed of a first refractory material. A wear indicator in the form of a central core comprised of a second refractory material is located within a centrally located recess in the outer core adjacent the bottom end of the plug. The central core extends from the bottom end of the plug towards the top end of the plug and is of a predetermined height less than that of the outer core. The upper end of the central core when exposed by the erosion of the stirring plug provides a visual indication of when that plug should be replaced.

    摘要翻译: 一种用于将气体引入熔融金属块中的截头圆锥形搅拌塞,其包括具有由第一耐火材料形成的外芯的塞子。 由第二耐火材料构成的中心芯形式的磨损指示器位于邻近插头底端的外芯中的位于中心的凹部内。 中心芯从插头的底端延伸到插头的顶端,并且具有比外芯的预定高度小的预定高度。 当中心芯的上端由于搅拌塞的侵蚀而暴露时,可以提供何时更换插头的可视指示。