1988 Volume 74 Issue 10 Pages 1970-1977
Mechanical and thermal characteristics in cold rolling have been evaluated as the first step of lubrication study. Through experimental and theoretical works, the following conclusions have been obtained.
(1) Pressure distribution was calculated by using the theory of differential work-roll rolling. The relation between the neutralpoint in the lower work roll and the rolling torque was obtained. Based on the computed results, the applicability of the equation of a practical friction coefficient μ=τ/(R·P) was made clear.
(2) With respect to the temperature rise of strip and roll surface, the measured data by contact thermocouple method was in good agreement with the calculated results by plastic and frictional works in the absence of heat transfer between roll and strip.
(3) Multi-thermocouple method was developed to investigate the temperature distribution in the roll. With the aid of boundary element method, this sensor could provide reliable estimation of temperature rise at the interface between roll and strip.