B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
B22C 11/10 (2006.01) B22D 41/50 (2006.01)
Patent
CA 2063994
An immersion nozzle (10) for continuous metal casting having an el- ongated nozzle body (12) formed from a porous, gas permeable refractory material. The nozzle body has a conduit (18) extending longitudinally there- through and an inner surface (20) which defines the conduit, The nozzle body also includes an outer surface defining a predetermined body profile and channels (24, 26, 28, 30) formed in the outer surface (16) of the nozzle body. A metallic housing (14) encases the nozzle body and has an inner sur- face (32) dimensioned to substantially conform to the profile of the nozzle body. The housing is secured to the nozzle body by a refractory mortar (40) which forms a rigid relatively airtight layer between the housing and the nozzle body, wherein the channel means form internal passages in the noz- The. A port (34) is provided on the housing in registry with the channels in the nozzle body. The port is connectable to a source of inert gas, which is op- erable to force the gas into the passages and into the porous refractory mate. rial.
Dunworth Bruce
Mccorkle Gary
Ferro Corporation
Mccarthy Tetrault Llp
LandOfFree
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