Continuous strip reduction cold mill and method

Details Continuous strip reduction cold mill and method Continuous strip reduction cold mill and method

B - Operations, Transporting

23

Q

80/25

B23Q 39/00 (2006.01) B21C 47/00 (2006.01) B21C 47/24 (2006.01) B21C 47/34 (2006.01) B21C 49/00 (2006.01)

Patent

CA 1068946

ABSTRACT OF THE DISCLOSURE A continuous cold reduction method and mill for metal strip in which the trailing end of a metal strip passing through the mill is welded to the leading end of a metal strip coming off a new coil without stopping the mill, the trailing end portion of the metal strip passing through the mill being paid out from a metal strip storage system during the welding operation with a resulting loss of close control of the lateral metal strip position at the entry side of the first mill stand, the present invention providing a method and means associated with a metal strip back tensioning unit ahead of the first mill stand for correcting the lateral position of the metal strip issuing from the metal strip storage system while apply- ing the tension of the metal strip in the metal strip storage system to the metal strip entry side of the back tensioning unit. The metal strip back tensioning step and unit serve the dual function of placing metal elongation tension on the metal strip going to the first mill stand while closely con- trolling the centering of the metal strip in the first mill stand.

289819

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