Title :
Aluminium hot mill work roll cooling control
Author :
Meijer, Otto ; Ballyns, Jeff ; Powers, Randy ; Vignone, John ; Kueber, Paul
Author_Institution :
Alcan Rolled Products Co., Oswego, NY, USA
Abstract :
In an ongoing program to improve both strip shape and profile control on an aluminium hot mill, a new work-roll cooling spray system with the capability of independent temperature control of narrow zones across the width of the rolls was purchased and installed. Time-proportioned on/off valve control was selected to provide coolant flow variation. Inherent problems with on/off control of individual valves are discussed. They include thermal lobes, hydraulic hammers, and thermal waves. Each of these problems was addressed and the solution integrated in the control system design.<>
Keywords :
cooling; hot rolling; metallurgical industries; process control; rolling mills; temperature control; Al; control system; coolant flow; cooling control; cooling spray system; hot rolling; metallurgical industry; process control; profile; rolling mills; strip shape; temperature control; valve control; Aluminum; Control systems; Coolants; Cooling; Milling machines; Shape control; Spraying; Strips; Temperature control; Valves;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96829
