Formation and control of strip scale pores in hot rolling

In order to solve the problem of strip surface pores generated by the combination of the tertiary scale on strip surface with black oxide layers produced on the roll surface, the mechanism of strip scale pores formation was analyzed using several instruments such as the SEM, the AHM-2-HL optical microscope and the Oxford ISIS EDAX energy spectrometer. A method of control is advanced to reduce strip scale pores, which is effective and clearly beneficial for enhancing the strip surface quality in practice.