Method and apparatus for removing a nozzle insert from a steelmaking ladle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 16, 1994
Issued Date -
N/A
app pub date -
Apr 26, 1993
filing date -
Mar 3, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nozzle extraction tool for removing a worn nozzle insert from a steelmaking vessel. The nozzle extraction tool including a support frame, a gripper assembly, and a drive piston for applying a force to the gripper assembly. The gripper assembly includes pivotal gripper arms and a rod assembly for pivoting and rotating the gripper assembly 360.degree. about the longitudinal axis of the worn nozzle insert. The rod assembly enables the gripper arms to be securely seated against the uneven surfaces of the worn discharge bore extending through the nozzle insert.
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