PROCESS CONTROL SYSTEM FOR BAR MILLS
Commonly adopted techniques for rolling steel bars do not adequately achieve the dimensional tolerances demanded by the world market place without incurring excessive yield losses. British Steel and the Betriebsforschungsinstitut (BFI) have undertaken a collaborative programme of work to develop automatic bar mill roll gap and tension control systems capable of improving the dimensional tolerances achievable on conventional commercial bar mills. The work undertaken by British Steel is reported in this document. The development of a dynamic mathematical model describing a multistand finishing train of a 'typical' bar mill has led to the testing of a number of control philosophies. These range from standard strip mill type philosophies, which are shown to offer little if any benefit, through to two novel schemes which potentially offer tolerance improvements on in-bar variations of the order necessary to approach bright drawn tolerances, for a modest capital expenditure.
Bibliographic Reference: EUR 12728 EN (1990) 92 PP., FS, ECU 10 ISBN 92-826-1287-2 THE OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES, L-2985 LUXEMBOURG
ISBN: ISBN 92-826-1287-2
Record Number: 1989128074800 / Last updated on: 1992-08-10
Original language: EN