On Measurement of Rolling Pressure and Rolling Torque of Roughing Stands in an All-Continuous Wire-Rod Mill

Abstract

The rolling pressure and the rolling torque were measured at the roughing stands of all continous wire rod mill. When four billets of mild steel were rolled at once, the rolling pressure of each stand fell in the range of about 9-37 ton per billet.
The rolling pressure of oval rolling stands was considerably higher than that of square rolling stands. And the effect of back or front tension between stands on the rolling pressure was found at the threading or the deliverying of billets.
The measured torque was considerably higher than the calculated torque from the measured pressure. The rolling efficiency of roughing stands was about 71%, which, was derived from the measured rolling torque and motor torque. Moreover the load distribution of each stand to the main motor was obtained.
At the end of this paper the relation between the mean specific pressure and some factors of rolling was discussed.