Strip elongation control in continuous annealing furnaces

Details Strip elongation control in continuous annealing furnaces Strip elongation control in continuous annealing furnaces

1992-09-24

1993-07-27

Andrews, Melvyn J.

Metallurgical apparatus

With control means responsive to sensed condition

With means responsive to condition of treated material

C21D 9573

Patent

active

052308570

ABSTRACT:
Strip elongation in a continuous annealing furnace is controlled by passing the strip around a first driven roll, thence through a portion of the furnace, thence 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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