thermal stress optimization in metal rolling

摘要

It is known that internal pressure in rolls has an advantageous effect upon the fatigue life of the rolls. To investigate and optimize this effect. Transient and steady-state temperature and thermal stress distributions were evaluated in rolls of metal rolling machines heated over the rolling region. The problem is formulated as that of a thick-walled hollow cylinder heated on its outer surface by a rotating source and subjected to an internal pressure. For long rolls two-dimensional analysis is performed and the temperature distribution is evaluated using the integral transform method.