ROLL PREHEATING APPARATUS CAPABLE OF EXTENDING THE LIFE SPAN OF A ROLL AND IMPROVING THE QUALITY OF ROLLED PRODUCTS

摘要

PURPOSE: A roll preheating apparatus is provided to preheat a replaced roll and thereby prevent damage to the roll, resulting from a temperature difference between the roll and a rolled material.;CONSTITUTION: A roll preheating apparatus comprises a roll rotating device(10) and a roll heating device(20). The roll rotating device rotates a roll set in a rolling mill and comprises a driving roll(11) which is installed on the top of a base, a supporting roll(12) which is installed separate from the driving roll on the top of the base, and a roll rotating unit(13) which rotates the driving roll. The roll heating device heats the roll rotated by the roll rotating unit.;COPYRIGHT KIPO 2011