| 摘要 |
<p>PURPOSE:To reduce the number of measuring points and to improve accuracy by solving an equation of nonstationary heat conduction, formed by using the measured value of roll-surface temperature as its boundary condition, to obtain the temperature distribution of the whole body of a rolling roll and converting the temperature distribution into the amount of thermal expansion to seize the amount of crown. CONSTITUTION:The surface temperature of a work roll is momently measured by a non-contact thermometer or a built-in temperature sensor. The temperature distribution obtained momently is converted into the amount of thermal expansion (the amount of heat crown) by integrating it by the equation, and a control output proportional to the amount of thermal expansion is outputted to control the heat crown. In this way, the measuring technic is made realistic and the number of measuring poins are reduced, because the temperature measuring points are limited in the vicinity of roll surface.</p> |
