Bethlehem Steel Corporation

Jack H Baker

Harold A List

Joseph W Hlinka

Thomas J Conarty, Jr

Jonathan A Burgo

Dennis H Bright

Jack Joyce

A method and apparatus for controlling the thickness of a metal strip cast by pouring molten metal between a pair of closely spaced, water-cooled rotating rolls. The temperature of at least one of the rolls is measured at a fixed position relative to the roll bite before and during the cast. The rotational speed of the rolls is adjusted in proportion to a measured roll separation or roll separating force corrected by the roll temperature measured during the cast such that a predetermined and substantially uniform thickness of the metal strip is produced.

Method and apparatus for controlling the thickness of metal strip cast

One set of four extensometers bolted onto opposite faces of two mill posts of a universal rolling mill stand are responsive to a total site strain caused by simultaneous application of horizontal- and vertical-roll forces in the mill stand. Extensometer output signals are corrected individually for a variable zero drift component. The four zero-corrected signals are resolved to provide simultaneous indications of sum and differences of horizontal-roll forces in the two mill posts, the same indications for the vertical-roll forces, and selective individual site and post strains.

Horizontal- and vertical-roll force measuring system

Growing community of inventors

Bethlehem, PA, United States of America

Jack H Baker