B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
39/113, 22/80
B22D 41/14 (2006.01)
Patent
CA 1340550
The invention relates to a closure and/or control means for the tapping of liquid metal melt on a metallurgical vessel with a fixed refractory member and a refractory member which is sealingly movable relative to it in rotation and/or linearly, the two refractory members being provided with a respective circular cylindrical sealing surface and the two sealing surfaces being sealingly fitted within one another. In order to ensure that in operation the free movability of the two refractory members with respect to one another is always maintained without the metal melt infiltrating into the vicinity of the annular gap between the two sealing surfaces it is proposed that the coefficients of expansion of the two refractory members be so matched to one another that in the operational state there is an annular gap between the circular cylindrical sealing surfaces of the two refractory members which forms a clearance fit which is still melt-tight.
604805
Bruckner Raimund
Gimpera Jose
Didier-Werke Ag
Fetherstonhaugh & Co.
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