Abstract: Upon the different heat transfer conditions experienced in a revolution， the coordinates of the circumferential direction of work-roll were converted to time coordinate， and the corresponding boundary conditions were added. These methods can make the results close to the thermal behavior of actual rolling. After analyzing the temperature field of work-roll， it shows that the temperature in the depth of 10~ 19mm increases slowly， while keeps constant in the depth over 19mm， as well as nearly axial symmetrical distribution in the depth of 2~ 10mm. It can quickly reach dynamic stability after drastically changing in less than 2mm depth namely about 1% area. Rolling speed of the work-roll has little effect on the temperature in the depth of greater than 2mm. When the rolling rhythm is less than 0.5， reducing it will have little influence on the temperature of the work-roll.

Key words: work-roll, temperature, rolling speed, rolling rhythm, finite element