Study of Rolling Friction in a Four-High Working Stand Using a Full-Scale Roll-Assembly Model

摘要

The rolling-friction coefficient has been studied in the interroll contact of a four-high stand using a full-scale roll-assembly model. The ranges of the contact stresses, the ratio of the backup to the work-roll-body diameter, the rate of roll rotation, and the roll roughness correspond to those in real wide-strip cold-rolling and pinch-pass mills. The ranges of the reliable rolling-friction coefficients have been established. The results obtained support the importance of the energy consumed for rolling friction, which accounts for 50-80% of the total energy consumed for cold rolling and skin rolling, and the reliability of the rolling-friction coefficients determined for real mills.