Title:
OPERATION METHOD FOR TENSION LEVELER
Document Type and Number:
Japanese Patent JP2693096
Kind Code:
B2
Abstract:
PURPOSE: To completely prevent trouble such as breakage of a work roll by decreasing pressurizing force when a strip welding point is passed through a tension leveler without vertically moving a roll chock.
CONSTITUTION: For instance, when an inlet side bridle is reached with the welding point 2, a lower side pressure reducing valve 11 is selected and when an outlet side bridle is passed with the welding point 2, a higher side pressure reducing valve 10 is automatically returned. That is, pressurizing force of a lower roll chock is decreased when the welding point 2 is passed and impact force generated at that time is mitigated. A trouble such as breakage of the work roll which was often generated during quick opening is completely prevented and production efficiency is remarkably improved since the welding point 2 of the strip 1 is passed without vertically moving the roll chock 7 by providing a pressurizing force decreasing means on a device by which the roll chock 7 of the tension leveler is pressed on a housing 3 to be contacted.
Inventors:
Tetsuhiko Kanda
Shinji Ibedo
Shinji Ibedo
Application Number:
JP32705992A
Publication Date:
December 17, 1997
Filing Date:
December 07, 1992
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D1/05; (IPC1-7): B21D1/05
Attorney, Agent or Firm:
Tachio Chanogi (1 outside)