公开(公告)号：US20220126341A1

公开(公告)日：2022-04-28

申请号：US17569099

申请日：2022-01-05

Applicant: Primetals Technologies Japan, Ltd.

Inventor： Akira SAKO ,  Jiro HASAI ,  Tadashi HIURA ,  Taroh SATOH ,  Toru TAKEGUCHI ,  Hideaki FURUMOTO ,  Shinya KANEMORI ,  Hideki TONAKA

IPC: B21B37/18 ,  B21B37/28

Abstract: There are provided a work-side position measurement device and a drive-side position measurement device for directly measuring positions of roll chocks in a rolling direction, and positions of upper and lower working rolls and upper and lower backup rolls in the rolling direction are adjusted to zero point or predetermined positions. Alternatively, a change caused in the strip wedge due to a minute crossing of the axes of working rolls and backup rolls is calculated, and the quantities of leveling of a work-side rolling reduction cylinder device and a drive-side rolling reduction cylinder device are adjusted to make the strip edge equal to or smaller than a predetermined value. Accordingly, the bilateral asymmetry (strip wedge) of the thickness distribution of a rolled material is easily adjusted even in the event that the positions of the roll chocks in the rolling direction are changed due to wear on various components.

公开(公告)号：US20190047028A1

公开(公告)日：2019-02-14

申请号：US15766091

申请日：2016-11-07

Applicant: Primetals Technologies Japan, Ltd.

Inventor： Akira SAKO ,  Jiro HASAI ,  Tadashi HIURA ,  Taroh SATOH ,  Toru TAKEGUCHI ,  Hideaki FURUMOTO ,  Shinya KANEMORI ,  Hideki TONAKA

IPC: B21B37/18

Abstract: There are provided a work-side position measurement device and a drive-side position measurement device for directly measuring positions of roll chocks in a rolling direction, and positions of upper and lower working rolls and upper and lower backup rolls in the rolling direction are adjusted to zero point or predetermined positions. Alternatively, a change caused in the strip wedge due to a minute crossing of the axes of working rolls and backup rolls is calculated, and the quantities of leveling of a work-side rolling reduction cylinder device and a drive-side rolling reduction cylinder device are adjusted to make the strip edge equal to or smaller than a predetermined value. Accordingly, the bilateral asymmetry (strip wedge) of the thickness distribution of a rolled material is easily adjusted even in the event that the positions of the roll chocks in the rolling direction are changed due to wear on various components.