A brief investigation on transversal temperature distribution during hot rolling

Temperature evolution of a working piece during hot rolling has a significant influence on the microstructure and final mechanical properties of the material. As the measurement technologies improve,on-line measurement of the temperature across the strip width has become accessible,and thus monitoring and control of the transversal temperature distribution during hot rolling can be realized.The scanning of the temperature across the strip width can help us to understand the state of the temperature variation at the strip edges and as a result help us improve the temperature homogeneity of the strip.In this paper,reaearch on temperature distribution along the strip width is reviewed first,and then the mechanism of the scanning measuring devices is introduced.With the temperature scanning measurement data taken from the finishing mill entry point and the down coiler entry point,the temperature distribution at the strip edges is analyzed.It is pointed out that the roughing process is the main contributor to the temperature inhomogeneity.Furthermore,the contribution of the edger heater to the temperature homogeneity is investigated.