Based on elastic-plastic and thermal-mechanical couple finite element method ( FEM)

the hot rolling process for 72 mm Q235 steel base plate and 14 mm 304 stainless steel clad plate deforming with 11 pass and small reduction to 12 mm clad steel plate was studied and the model of temperature field has been established by developed finite element MARC software. The results showed that in deformed zone

the surface temperature of clad plate continuously dropped and the temperature at interface of clad plate slightly went up; outside deformed zone

the surface temperature somewhat went up; with next passes rolling

the temperature gradient in the direction of height of block gradually decreased; and the temperature at interface of dad plate showed "S" shape

the change of temperature was obvious and with rolling speed increasing the temperature went up obviously.