Method of strip elongation control in continuous annealing furna

Details Method of strip elongation control in continuous annealing furna Method of strip elongation control in continuous annealing furna

1990-11-20

1992-12-29

Andrews, Melvyn J.

Metal treatment

Process of modifying or maintaining internal physical...

With measuring, testing, or sensing

C21D 126

Patent

active

051748355

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.

REFERENCES:
patent: 4061508 (1977-12-01), Moreau
patent: 4375283 (1983-03-01), Shimoyama et al.
patent: 4913748 (1990-04-01), Sellitto et al.

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