ROLLING MILL

摘要

A rolling mill in which dynamic rigidity in the horizontal direction during rolling is increased to suppress vibration, making the rolling highly efficient. The rolling mill has a housing (11), a pair of upper and lower work roll chucks (12, 13) supported by the housing (11), a pair of upper and lower work rolls (14, 15) supported by the upper and lower work roll chucks (12, 13) and facing each other, hydraulic cylinders (25) for pressing the work roll chucks (12, 13) from the direction horizontal to and crossing perpendicular to the axes of the work rolls, hydraulic pressure supply and discharge pipes (56, 57) connected to the head sides and the rod sides of the hydraulic cylinders (25) and supplying and discharging oil, and restriction sections (58, 59) formed in the hydraulic pressure supply and discharge pipes (56, 57). During the rolling, the oil is supplied to both the head sides and the rod sides of the hydraulic cylinders (25) through the hydraulic pressure supply and discharge pipes (56, 57).