Method of controlling tensions in continuous annealing furnace a

Details Method of controlling tensions in continuous annealing furnace a Method of controlling tensions in continuous annealing furnace a

1980-10-24

1983-03-01

Sheehan, John P.

Metallurgical apparatus

Process

266 78, 266102, 266111, 432 8, C21B 1300

Patent

active

043752837

ABSTRACT:
Helper rolls in a continuous annealing furnace are divided by a master speed hearth roll serving as the boundary into a plurality of control blocks disposed forwardly and rearwardly of the master speed hearth roll, and the speed of rotation of the master speed hearth roll is used as a reference speed. Tension of a steel strip are continuously controlled on the basis of values detected by a tension meter in the plurality of control blocks towards the inlet of the furnace for the helper rolls disposed forwardly of the master speed hearth roll and towards the outlet of the furnace for the helper rolls disposed rearwardly of the master speed hearth roll.

REFERENCES:
patent: 2666003 (1954-01-01), Dougherty et al.
patent: 2967007 (1961-01-01), Baughman
patent: 2980561 (1961-04-01), Ford et al.
patent: 3109572 (1963-11-01), Herr
patent: 3385946 (1968-05-01), Hatchard
patent: 4202476 (1980-05-01), Martin

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