THERMO-PHYSICAL PHENOMENA OF THE METALLIC ALLOYS USED IN AUTOMOTIVE INDUSTRY AT HIGH TEMPERATURE

Abstract

For the constructive-functional improvement of heat treatments equipement for metallic alloys used in automotive industry imposes first a theoretical analysis of thermo-physical phenomena into a chamber furnace heated electrically at high temperature, with resistors, in respect of the fact that this type of furnace is the most used for heat treatments applied to metallic materials. In electric furnaces with resistors indirect heating are met all that three ways of heat transfer. For resistor furnaces of high temperature the basic ways of heat transfer are those through thermal conduction and radiation. Convection heat transfer way cannot be treated practically as a separate mechanism for these furnaces in regard to the other two mentioned-above.