Four-high mill stand roll change device, a method of retrofit, and a roll change device therefrom
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United States of America Patent
Stats
-
Jun 25, 2002
Grant Date -
N/A
app pub date -
Oct 26, 2000
filing date -
Oct 26, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is directed to a roll change device for use in a four-high rolling mill stand, and in particular it is directed to retrofitting an existing four-high rolling mill stand with a roll change device comprising actuators that are fastened to opposing inboard exterior surfaces of the lower backup roll chocks in the mill stand and a pair of spaced apart lift-rails attached to the actuators by lift-rail hooks and positioned to engage the lower work roll chocks of the mill stand when the actuators are operated. The roll change device further includes a self-contained roll staging platform that is installed as a single unit within the mill floor adjacent the four-high rolling mill stand or removed as a single unit from its position within the mill floor.
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