Patent ID: 7305859

Claim:
A rolling mill comprising: a pair of work rolls for rolling a plate material in a thickness direction; a guide for guiding a leading end of the plate material between the work rolls, the guide comprising a rolling oil passage formed within the guide and a plurality of temperature adjusted oil passages formed within the guide, each of the plurality of temperature adjusted oil passages being distinct from the rolling oil passage; a rolling oil supply member for supplying a rolling oil between said the work rolls through the rolling oil passage; a plurality of temperature adjusted oil ducts, each of the temperature adjusted oil ducts being connected to one of the temperature adjusted oil passages and each of the temperature adjusted oil ducts further comprising a valve independently adjusted an oil flow rate of a temperature adjusted oil and a heater independently adjusted an oil temperature of the temperature adjusted oil; and a temperature adjusted oil supply member for supplying the temperature adjusted oil having a different temperature from the rolling oil to the work rolls through the plurality of temperature adjusted oil ducts and the plurality of temperature adjusted oil passages so as to control a crown rate of the work rolls.