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    • 65. 发明申请
    • STOPPER FOR USE IN MOLTEN METAL HANDLING
    • 停止在金属处理中使用
    • WO1985005056A1
    • 1985-11-21
    • PCT/GB1985000188
    • 1985-05-07
    • THOR CERAMICS LIMITEDLEE, Stephen, J.
    • THOR CERAMICS LIMITED
    • B22D41/10
    • B22D41/58B22D41/186
    • A stopper comprises a monoblock refractory body (1) having a gas duct (2) venting through a nozzle (11) or porous region (12) in the nose (3) of the stopper and being sealed at its upper end apart from a gas supply port (5) opening from a gas supply channel (6) extending through the body (1) to a gas supply inlet (7) adjacent the top of the stopper, the said conduit (6) optionally including restrictor means (16) to ensure a positive gas supply to the stopper in order to overcome gas leaks and air ingress due to a tendency for a vacuum to form in gas-ducted stoppers in use due to the venturi effect of melt rushing past the stopper nose (3) through a sub-entry nozzle in casting operations.
    • 止动器包括具有通过喷嘴(11)排出的气体管道(2)的整体耐火体(1)或止挡件的鼻部(3)中的多孔区域(12),并且在其上部与气体 供应端口(5)从延伸穿过主体(1)的气体供应通道(6)开口到靠近止动件顶部的气体供应入口(7),所述导管(6)可选地包括限流装置(16), 确保向止动器供应正气体,以克服气体泄漏和空气进入,这是由于在使用中由气体导管的塞子形成真空的倾向,这是因为熔融物经过塞子鼻部(3)穿过一个 子入口喷嘴在铸造操作。