Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1979-03-12
1981-09-01
Mehr, Milton S.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 16, 72 17, B21B 3706
Patent
active
042864470
ABSTRACT:
Method and apparatus are disclosed for controlling the final output gauge of strip material passing through a tandem rolling mill in which the final reduction in gauge is substantially accomplished at the next to the last stand. An automatic gauge control (AGC) loop responsive to the changes in speed of the next to the last stand, controls the speed regulators for the last two stands. Responsive to the next to the last stand speed, the AGC loop provides a variable gain at low and high mill speeds respectively to appropriately adjust the control signals to the speed regulators for the last two stands. Interstand tension control between the last two stands is provided by modification of the speed regulator for the last stand.
REFERENCES:
patent: 1932168 (1933-10-01), Adams
patent: 3440846 (1969-04-01), Scott
patent: 3531961 (1970-10-01), Dunn
patent: 3740983 (1973-06-01), Peterson
patent: 3765203 (1973-10-01), Peterson
patent: 3768286 (1973-10-01), Peterson
patent: 3782151 (1974-01-01), Peterson
Lorin C. M.
Mehr Milton S.
Westinghouse Electric Corp.
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