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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.
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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.
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Patent Agency Ranking
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.
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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
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.
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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
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.
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公开(公告)号：US20190390315A1
公开(公告)日：2019-12-26
申请号：US16479457
申请日：2017-04-14
Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.
Inventor： Takashi YONEKURA , Masao TAMBARA , Masashi YOSHIKAWA , Shinya KANEMORI , Kazuki YOSHIDA
Abstract: When a portion for measuring the plating adhesion amount reaches an upstream side position, plating adhesion amount estimation values are calculated by using a plating adhesion amount estimation expression at positions away from a position that faces the distance sensors, that is, the upstream side position, by strip-width direction distances, of the surfaces of the steel strip. When the portion for measuring the plating adhesion amount reaches a downstream side position, the strip-width direction distances of the plating adhesion amount meters are matched to the strip-width direction distances, and the plating adhesion amount actual measurement values are obtained. The plating adhesion amount estimation expression is corrected on the basis of the differences between the plating adhesion amount estimation values and the plating adhesion amount actual measurement values. Accordingly, the control accuracy of the plating adhesion amount is improved.
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7.发明申请公开(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
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.
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