ゴムローラの膨潤加速試験方法

概要

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This paper describes a method of estimating the amount of swelling in rollers under working conditions, such as high load pressures, high rotation speeds, high temperatures, and slippage occurring between paired rollers. Three kinds of swelling test system were considered. “Rotation tests” refer to swelling tests inside the actual environment of the machine. A pair of rollers rotates under conditions of load pressure, high temperature and slippage (difference in rotation speed). “Static tests” are similar to the traditional swelling test where the roller is free from speed, slip and load. “Quasi-static tests” is similar to Static tests but load pressure can be applied. The Experiments were efficiently conducted with these three systems by using DOE (design of experiments). As a result, rotation speed, slippage and load pressure (within the usual range in ATM) had small effects, whereas, environmental temperature, total contact time, application quantity and application frequency had large effects on roller radius. Accelerated test method was examined and finally, the maximum amount of swelling in the roller under the actual conditions inside the machines can be predicted using the regression curve analyzed from 3 experimental points by the “static test”, and the method provides a swelling test that is completed within one day.