B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/10 (2006.01) B22D 41/42 (2006.01) B22D 41/50 (2006.01) B22D 41/58 (2006.01)
Patent
CA 2216577
Ingress of gas such as air through the joint of a pour tube (8) and tube holder (7) of a continuous caster, or a similar interface of a slide gate valve (5, 6, 7), is prevented or inhibited by passing an inert gas into a channel (16, 21, 22, 27, 64) around the orifice and at the interface through which air is likely to enter, the gas is evenly distributed within the channel over the entire configuration of a porous refractory insert (17, 23, 24, 28, 65) which contacts the interface in the channel; the porous refractory insert assures evendistribution of the gas to the desired location in the interface, thus providinga positive pressure of inert gas to inhibit the entry of ambient gas.
On prévient ou on empêche l'entrée de gaz, tel que de l'air, à travers le raccord d'un tube (8) de coulée et du dispositif de retenue (7) de tube d'un moule à coulée en continu, ou une interface similaire d'une vanne à glissière (5, 6, 7) en faisant passer un gaz inerte dans un canal (16, 21, 22, 27, 64) autour de l'orifice et au niveau de l'interface à travers laquelle de l'air est susceptible d'entrer. Le gaz est réparti uniformément dans le canal sur la configuration entière d'une pièce d'insertion réfractaire poreuse (17, 23, 24, 28, 65) qui vient en contact avec l'interface dans le canal. Ladite pièce d'insertion garantit une répartition uniforme du gaz à l'endroit désiré dans l'interface, fournissant ainsi une pression positive de gaz inerte pour empêcher l'entrée de gaz ambiant.
Borden Ladner Gervais Llp
Usx Engineers And Consultants Inc.
LandOfFree
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