Method of strip elongation control in continuous annealing furnaces
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United States of America Patent
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-
Dec 29, 1992
Issued Date -
N/A
app pub date -
Nov 20, 1990
filing date -
Nov 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Strip elongation in a continuous annealing furnace is controlled by passing the strip around a first driven roll, then through a portion of the furnace, then around a second driven roll, wherein the elongation of the strip is sensed. One method is to sense the amount by which the peripheral speed of the second roll exceeds the peripheral speed of the first roll. Roll speeds are monitored by precision resolvers. Another method is to utilize a strip width measurement to determine elongation. Mechanisms are used for profiling tension throughout the furnace length.
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