Simulation and Calculation of Temperature Distribution in Roll Fittings' Guides in Contact with the Rolled Strip

摘要

The article deals with the heat exchange model of roll fittings' guides, the rolled strip and cooling water. The heat model allows determination of the guides' temperature both in their volume and on the working surfaces to study the wear process and to develop ways of the roll fittings' guide wear resistance increase. To solve the predetermined task, the three-dimensional heat conductivity equation has been derived, as well as the border conditions taking into account the heat exchange peculiarities between the rolled hot strip and the working surface of the guide's front part, the contact surfaces roughness of the strip and the guide and also water cooling of guide's non-working surfaces have been determined. The heat conductivity equation was solved using the method of final differentials. The analysis of calculation results shows that the deviation of calculated temperature values does not exceed 30°C in comparison with those received during the industrial research which indicates quite a high accuracy of temperature calculations with the use of the developed model both at the stage of transient heat transfer in the guide fittings and during the steady process.