| 摘要 |
PROBLEM TO BE SOLVED: To provide a dipping tube of a vacuum degassing tank having the life longer than ever. SOLUTION: The dipping tube for the vacuum degassing tank comprises an outer cylindrical steel plate, an inner cylindrical steel plate, a bottom plate, a core for passing a coolant gas integrated inside, and a refractory for covering the periphery. The dipping tube has further a plurality of fins drawn in a perpendicular direction installed on the wall surface of a coolant gas duct side of the outer cylindrical steel plate and/or the inner cylindrical steel plate. COPYRIGHT: (C)2004,JPO&NCIPI
|
