公开(公告)号：US3051217A

公开(公告)日：1962-08-28

申请号：US74805758

申请日：1958-07-11

Applicant: ALUMINUM CO OF AMERICA

Inventor： HILL HARRY N ,  CLARK JOHN W ,  WOODBURN WILTON A

IPC: B21D25/04

CPC classification number: B21D25/04 ,  Y10T24/44068

公开(公告)号：US3613417A

公开(公告)日：1971-10-19

申请号：US3613417D

申请日：1970-02-09

Applicant: ALUMINUM CO OF AMERICA

Inventor： WOODBURN WILTON A

IPC: B21B28/04 ,  B21B37/68 ,  B21B37/00

CPC classification number: B21B37/68 ,  B21B28/04

Abstract: A METHOD OF CONTROLLING THE TRACKING OF A TRAVELING STRIP OF MATERIAL BEING REDUCED IN THICKNESS BY THE WORKING ROLLS OF A MULTISTAND MILL. THE METHOD INCLUDES THE STEPS OF MEASURING THE ROLLING FORCE ADJACENT THE ENDS OF THE WORKING ROLLS TO PROVIDE FORCE-DIFFERENTIAL INFORMATION FOR EACH STAND OF THE MILL. THIS INFORMATION IS MONITORED WITH REFERENCE TO A TIME BASE, AND WHEN FORCE-DIFFERENTIALS OCCUR INDICATING AN ERROR IN STAND LEVEL OR FRICTIONAL FORCES, CORRECTION OF STAND LEVEL AND/OR FRICTIONAL FORCES ARE EFFECTED IN A PREDETERMINED PROCEDURE ON THE BASIS OF THE TIME BASED, FORCE-DIFFERENTIAL INFORMATION.