Patent ID: 8713981

Claim:
Equipment for supplying a lubricant for a rolling roll of a rolling mill for a flat shaped metal material, comprising: a plurality of spray nozzles which are arranged in an axial direction of said rolling roll and which are configured to spray a lubricant to said rolling roll together with a gas in a particulate or atomized state; a lubricant feed device for feeding the lubricant to the spray nozzles; a gas feed device for feeding the gas to the spray nozzles; and a controller for controlling the amount of lubricant supplied from the spray nozzles, wherein the plurality of spray nozzles comprises side spray nozzles positioned at both ends among the plurality of spray nozzles for supplying the lubricant to the parts of said rolling roll corresponding to end regions of said flat shaped metal material, center spray nozzles positioned at the center among the plurality of spray nozzles for supplying the lubricant to the part of said rolling roll corresponding to the center region of said flat shaped metal material, and spray nozzles between said side spray nozzles and said center spray nozzles, wherein the amount of lubricant supplied from the side spray nozzles is larger than the amount of lubricant supplied from the center spray nozzles and the amount of lubricant supplied from the spray nozzles between these side spray nozzles and center spray nozzles is not more than the amount of lubricant supplied from said side spray nozzles and not less than the amount of lubricant supplied from said center spray nozzles, wherein said equipment is configured to individually control the amount of lubricant supplied from each spray nozzle in accordance with a parameter relating to the surface of the rolling roll, wherein said parameter relating to the surface of the rolling roll is the amount of wear of the rolling roll, and wherein said lubricant feed device is configured to increase the amount of lubricant supplied to regions of the rolling roll with relatively large amounts of wear compared with regions of the rolling roll with relatively small amounts of wear.