公开(公告)号：US20230330729A1

公开(公告)日：2023-10-19

申请号：US17914776

申请日：2020-04-17

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Tatsunori SUGIMOTO ,  Kenji HORII ,  Akio KURODA ,  Akira SAKO ,  Shinya KANEMORI

IPC: B21B37/68 ,  B21B1/22

CPC classification number: B21B37/68 ,  B21B1/22

Abstract: A control device 20 obtains second pressing forces acting on work-side and drive-side roll chocks 112A and 112B on the basis of entry side and exit side first pressing forces, and controls at least one of work roll position control devices 140B and 141B and at least one of work roll pressing devices 130B and 131B changing a position of at least one of the roll chocks 112A and 112B in such a manner that a difference between the work-side second pressing force and the drive-side second pressing force is equal to or smaller than a predetermined value.

公开(公告)号：US20230139351A1

公开(公告)日：2023-05-04

申请号：US17914779

申请日：2020-04-27

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Tatsunori SUGIMOTO ,  Kenji HORII ,  Akio KURODA ,  Akira SAKO ,  Shinya KANEMORI

IPC: B21B1/26

Abstract: A hot rolling mill 1 includes a control apparatus 20 that adjusts an angle formed between an upper-side pair of an upper backup roll 120A and an upper work roll 110A and a lower-side pair of a lower backup roll 120B and a lower work roll 110B in a state where the upper-side pair is kept parallel and in a state where the lower-side pair is kept parallel. The hot rolling mill 1 is configured such that the work rolls 110A and 110B satisfy the condition that DW/Lb is equal to or smaller than 0.30 where DW is a diameter of the work rolls 110A and 110B, and Lb is the maximum strip width of a rolled material, and the hot rolling mill 1 performs rolling in a state where a bending force is applied to the work rolls.

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.

公开(公告)号：US20240359224A1

公开(公告)日：2024-10-31

申请号：US18291192

申请日：2022-07-21

Applicant: Primetals Technologies Austria GmbH ,  PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Manfred HACKL ,  Kenji HORII ,  Alois SEILINGER ,  Tatsunori SUGIMOTO ,  Roman WINKLER

IPC: B21B13/02 ,  B21B15/00 ,  B21B37/42 ,  B21B37/44 ,  B21B45/02

CPC classification number: B21B13/02 ,  B21B15/0085 ,  B21B37/42 ,  B21B37/44 ,  B21B2013/025 ,  B21B2013/028 ,  B21B2015/0057 ,  B21B45/0233 ,  B21B2201/14 ,  B21B2261/04 ,  B21B2261/20 ,  B21B2267/06 ,  B21B2269/04 ,  B21B2269/06 ,  B21B2269/10 ,  B21B2269/14 ,  B21B2269/16

Abstract: A six-high rolling (also known as sexto) mill stand that is suited for hot rolling an intermediate strip into a thin strip that is less than 0.8 mm thick. A combined casting and rolling installation that includes the six-high rolling mill stand allowing for hot rolling in long uninterrupted sequences, without any change of the work rolls to obtain a strip with good geometry due to moderate rolling forces.

公开(公告)号：US20230149995A1

公开(公告)日：2023-05-18

申请号：US17914778

申请日：2020-04-27

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Tatsunori SUGIMOTO ,  Kenji HORII ,  Akio KURODA ,  Akira SAKO ,  Shinya KANEMORI

IPC: B21B37/58

CPC classification number: B21B37/58

Abstract: Angles of an upper-side pair of an upper work roll 110A and an upper backup roll 120A, and a lower-side pair of a lower work roll 110B and a lower backup roll 120B are adjusted in a state where the upper-side pair is kept parallel and in a state where the lower-side pair is kept parallel. Thereafter, work-roll pressing apparatuses 130A and 130B, work-roll position control apparatuses 140A and 140B, backup-roll pressing apparatuses 150A and 150B, and backup-roll position control apparatuses 160A and 160B are controlled such that the angles of the upper work roll 110A and the lower work roll 110B are adjusted in a state where the angles of the upper backup roll 120A and the lower backup roll 120B are maintained.