Prediction of heat streaks in metal rolling.

摘要

A temperature detecting block for a thermal sensor roll houses a plurality of thermocouples which are located at different depths in the block. One or more such temperature detecting blocks are attached to the surface of the thermal sensor roll. When the thermal sensor roll is held in contact with a metal strip being rolled, temperatures in the thermal sensor roll are measured by the different plurality thermocouples. The temperature of the metal strip in contact with the surface of the thermal sensor roll can then be calculated from the temperature gradient in the thermal sensor roll in a radial direction of the thermal sensor roll, without the influence of external disturbances. The calculated temperature of the metal strip being rolled is then compared with an experimentally determined temperature of heat streak formation, to predict the formation of heat streaks with high accuracy.