| 摘要 |
In a lubricated hot rolling method using a lubricating oil which contains one kind or two or more kinds among an high-basic alkaline-earth metal phenate, high-basic alkaline-earth metal carboxylate, high-basic alkaline-earth salicylate, or high-basic alkaline-earth metal sulfonate having a basicity of 40 mgKOH/g or higher, and has a viscosity at 40 C of 800 cSt or less, rolling is performed by granulating or atomizing the lubricating oil into particulates whose average size is less than 1 mm, supplying it to rolls by using a noncombustible gas whose flow rate is 2000 cm¿3< or more per minute per lubricating nozzle and whose velocity is 1 m or more per second, and controlling the amount supplied of the lubricating oil to 0.01 cm¿3? or more and 20 cm¿3? or less per 1 m¿2? of a surface area of the rolls. |
