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.

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：US20170348745A1

公开(公告)日：2017-12-07

申请号：US15435881

申请日：2017-02-17

Applicant: Primetals Technologies Japan, Ltd.

Inventor： Hideaki FURUMOTO ,  Jiro HASAI ,  Hironori ABE ,  Masatomo YAMANE ,  Kanji HAYASHI ,  Shinya KANEMORI

IPC: B21B37/16 ,  B21B45/00 ,  B21B1/26

CPC classification number: B21B37/165 ,  B21B1/26 ,  B21B28/04 ,  B21B37/28 ,  B21B37/38 ,  B21B37/40 ,  B21B37/58 ,  B21B45/004 ,  B21B2265/12 ,  B21B2269/04 ,  B21B2269/14

Abstract: In a decision control device of a control system, a predetermined pass schedule is decided by adjusting the rolling force per unit width at a last stand of a hot finishing tandem rolling mill to cause the edge profile on the outlet side of the last stand to fall within an allowable range based on the relationship between a strip crown and the edge profile on the outlet side of the last stand with respect to the rolling force per unit width and a strip shape control parameter, obtained regarding the last stand, and adjusting the strip shape control parameter of the last stand to cause the strip shape on the outlet side of the last stand to fall within an allowable range and cause the strip crown to become a predetermined value or smaller.