Electrical Hardware for Automation Machinery of Recent Cold Mills

Recently installed cold rolling mills use much new automation machinery. This paper evaluates five automation systems commonly used on eight recently installed cold mills. Key parts of several of the schemes are explained in detail. Field results of the systems are reported, together with suggestions for future designs. Automatic slow-down, main drive spindle positioning, entry end coil handling, interstand equipment, and delivery end coil handling are the five automation systems evaluated. The Appendix explains in detail the operation of three electrical circuits used in these schemes.