METHOD OF TEMPER ROLLING FOR STEEL STRIP AND TEMPER ROLLING ROLL

PROBLEM TO BE SOLVED: To obtain a temper-rolled steel strip the difference of surface roughness between the surface and rear faces of which is reduced. SOLUTION: When temper rolling a steel strip by passing the steel strip between an upper roll and a lower roll, the distance between adjacent craters which are formed on the circumferential surface of the lower roll by electron beam working is made smaller than the distance between adjacent craters which are formed on the circumferential surface of an upper roll by the electron beam working and the upper and lower rolls the surface roughness of which is differentiated by crater formation are used so that the effect by temper-rolling oil which is fed to roll bite is cancelled due to different roll-in quantity between the obverse and reverse of the steel strip.