Abstract
Summary A sensor for measuring interface forces in the roll gap has been designed. It has been used to measure, successfully, the interface friction forces in the cold rolling of 1100 aluminum. In order to be sure the friction forces measured at the interface are correct, the results are integrated across the billet surface and then multiplied by the torque arm. This quantity is then compared to the input spindle torque that is measured during the experiment. These results were found to be within 5 percent of each other for reductions of 20% and 25%. The design of the sensor is described and the results are shown for reductions up to 25%, with particular emphasis upon the reductions of 20% and 25%. The results are for the unlubricated rolling of 1100 aluminum.
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