METHOD AND ROLL FOR HOT ROLLING A STEEL MATERIAL FOR HOT ROLLING OF STEEL MATERIAL

摘要

A hot rolling method of a steel material effective to prevent burning between the rolls and the rolled steel material caused by hot rolling the steel material of the steel material, among them the abrasion of the roll, and the surface roughness of the rolled and rolled steel material; To a roll for hot rolling a steel material. The method for hot rolling a steel material according to the present invention is a method of rolling at least a film of a hydroxide (iron oxide, calcium oxide, etc.) on a surface of a roll in contact with a rolled steel material. Specifically, for example, an aqueous solution containing a water-soluble or water-soluble aqueous solution containing at least a part of a roll cooling water and an aqueous solution containing a water-soluble calcium compound is used for spraying the hot-And rolling. The method for hot rolling a steel material according to the present invention is a method for hot rolling a steel material by dipping a roll for hot rolling the steel material into an aqueous solution of an aqueous solution of iron or applying or spraying an aqueous solution of an aqueous solution of a hydroxide to a hot-A method may be used in which an iron oxide film is formed in the contact region and rolled by using the hot rolled steel of the steel material formed with the iron oxide film.;The roll for hot rolling of the steel material of the present invention has a film of the above-mentioned hydroxyl salt in a region at least in contact with the rolled steel material on the surface.