公开(公告)号：US20230149994A1

公开(公告)日：2023-05-18

申请号：US17919362

申请日：2020-08-07

Applicant: Primetals Technologies Japan, Ltd.

Inventor： Kenji HORII ,  Toshihiro USUGI ,  Akihiro YAMAMOTO ,  Hikaru NAKAYA ,  Daisuke IWAKI ,  Hiroki YAMASAKI

IPC: B21B37/40 ,  B21B13/14

CPC classification number: B21B37/40 ,  B21B13/14

Abstract: Provided are: an upper work roll, radial bearings and a thrust bearing provided on a work side and a drive side of the upper work roll and supporting the upper work roll. Shift cylinders are provided on the work side of the upper work roll and apply forces in both a work side direction and a drive side direction to the thrust bearing. Shift cylinders are also provided on the drive side of the upper work roll and apply forces in both the work side direction and the drive side direction to the radial bearing 790B. The shift cylinders each apply a force in the same direction to the radial bearing and the thrust bearing when the upper work roll does not shift in an axial direction at least during rolling.

公开(公告)号：US20240408659A1

公开(公告)日：2024-12-12

申请号：US18697558

申请日：2021-10-19

Applicant: Primetals Technologies Japan, Ltd.

Inventor： Kenji HORII ,  Tatsunori SUGIMOTO ,  Toshihiro USUGI ,  Akio KURODA

IPC: B21B37/28 ,  B21B27/02

Abstract: A control device of a rolling mill includes first and second angle instruction sections that issue a first instruction to adjust an angle between an upper side pair and a lower side pair in a state in which the upper side pair has a parallel state and in a state in which the lower side pair has a parallel state; and a second instruction to tilt work rolls in a state in which an angle between backup rolls is maintained. An axial position instruction is issued to move the work rolls in a direction in which total thrust force received, by the work rolls tilted by the second instruction, from the backup rolls and a rolled material acts. The work roll pressing devices, work roll fixed position controlling devices, and shift cylinders are controlled on the basis of the first and second instructions, and the axial position instruction.