Submerged nozzle changing apparatus
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United States of America Patent
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-
Nov 18, 1997
Grant Date -
N/A
app pub date -
Jan 3, 1996
filing date -
May 6, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A submerged nozzle changing apparatus comprises: a slide valve device (32) for controlling the rate of discharge of a molten metal from a molten metal container (30) a nozzle holding cylinder actuator (42) supported in a vertical position under the slide valve device; and a guide arm unit (44) supported on the piston rod (43) of the nozzle holding cylinder actuator in a horizontal position. The guide arm unit (44) has a pair of parallel guide rails (45) provided in their inner surfaces facing each other with guide grooves (46) having open opposite ends and a length long enough to hold at least three nozzle cases (48) fitted on the upper parts of submerged nozzles (47). A new submerged nozzle is supported on the guide arm unit with portions of a nozzle case fitted on the upper part thereof engaged in the guide grooves of the pair of guide rails and is moved to a nozzle setting position by a nozzle changing cylinder actuator (56).
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