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公开(公告)号：US3537285A
公开(公告)日：1970-11-03
申请号：US51512865
申请日：1965-12-20
Applicant: DAVY & UNITED ENG CO LTD
Inventor： KIGGELL ANNE , STUBBS DENNIS
Abstract: 1,127,926. Automatic control of rolling. DAVY & UNITED ENG. CO. Ltd. Dec. 15, 1965 [Dec. 22, 1964], No. 52116/64. Heading G3R. [Also in Division B3] In a rolling mill, parts of the mill other than the rolls are pre-stressed to an extent that is automatically controlled by a signal derived from independent measurements of the pre-stressing load and the total of the pre-stressing load and the rolling load, so that the roll gap is maintained constant. In Fig. 1, mill rolls 20 are journalled in chocks 17, 18 located in recesses in further chocks 14, 15 carrying back-up rolls 16. Chocks 14, 15 are located in end housings 12 and the roll gap is adjustable by screws 22. The mill stand is pre-stressed by hydraulic actuators 25 which force chocks 14,15 apart and are under the control of a valve 27. When material is being rolled, an electrical signal dependent on the total force is derived from load cells 23 associated with screws 22 and another signal dependent on the pre-stressing force is derived from a pressure transducer 29 associated with the hydraulic supply to actuators 25. The difference between these two signals, which represents the rolling force, is obtained by a circuit 31. A proportion of this rolling force signal is selected by a potentiometer 32 and added to the total force signal by a circuit 30 to produce a signal representative of the enlargement of the roll gap caused by the forces involved. This calculated gap enlargement signal is compared with a desired enlargement signal obtained by subtracting, in a circuit 41, a signal from a transducer 40, representing screw-down setting, from an adjustable reference signal produced by a unit 35. Any difference resulting from the comparison produces an output from a circuit 33 which is applied to control valve 27 so that gap enlargement is restored to the desired value. Signals from a gauge 38 detecting errors in thickness of the rolled material are integrated at 37 and modify the output of unit 35 to correct long term changes in thickness. Camber of the rolls may be automatically controlled by the signal representing rolling force to maintain a desired shape of cross-section. Alternative arrangements for pre-stressing the mill and for calculating the gap enlargement are referred to.
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公开(公告)号：US3208251A
公开(公告)日：1965-09-28
申请号：US18909162
申请日：1962-04-20
Applicant: WESTINGHOUSE CANADA LTD
Inventor： HULLS LEONARD R , LENNOX DEREK H , SAMUEL GEORGE H
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公开(公告)号：US11858019B2
公开(公告)日：2024-01-02
申请号：US17286660
申请日：2019-10-21
Applicant: NIPPON STEEL CORPORATION
Inventor： Daisuke Nikkuni , Toshiyuki Shiraishi , Yutaka Sadano , Masafumi Miyazaki
CPC classification number: B21B1/04 , B21B37/58 , B22D11/06 , B22D11/12 , B21B1/00 , B21B37/66 , B21B2001/028
Abstract: A slab manufacturing method in which casting drum housing screw-down system deformation characteristics which have been acquired prior to the start of slab casting and which indicate deformation characteristics of a housing configured to support a casting drum and deformation characteristics of a screw-down system configured to screw down the casting drum is used to calculate an estimated plate thickness at both end portions of a slab in a width direction thereof from Expression 1 ((estimated plate thickness on entry side of rolling mill)=(screw-down position of casting cylinder)+(elastic deformation of casting drum)+(casting drum housing screw-down system deformation)+(drum profile of casting drum)−(elastic deformation of casting drum at time of screw-down position zero-point adjustment)), an entry-side wedge ratio and an exit-side wedge ratio are calculated on the basis of the estimated plate thickness calculated from Expression 1.
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公开(公告)号：US20230256489A1
公开(公告)日：2023-08-17
申请号：US18012280
申请日：2021-05-26
Applicant: Primetals Technologies Germany GmbH
Inventor： Matthias DRESSLER , Daniel KOTZIAN , Martin SCHÖNHERR , Srdan SEKULIC
CPC classification number: B21B37/165 , B21B37/46 , B21B37/54 , B21B37/58 , B21B2015/0064
Abstract: A roll stand of a rolling mill is supplied with a metal strip by an upstream supply device at an in-feed speed (v), with said metal strip being rolled in the roll stand. A measuring device between the supply device and the roll stand detects a respective thickness value (d) of the metal strip for consecutive sections of the metal strip and supplies said value to a control device of the rolling mill. The control device determines final thickness deviations based on the preliminary thickness deviations. The control device determines a respective control value (A2, A3) for the roll stand and/or the supply device for the sections of the metal strip based on the final thickness deviation of the respective section of the metal strip and the final thickness deviations of multiple preceding and/or subsequent sections of the metal strip.
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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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Patent Agency Ranking
公开(公告)号：US20180345341A1
公开(公告)日：2018-12-06
申请号：US15609264
申请日：2017-05-31
Applicant: Honeywell International Inc.
Inventor： Paul McGahan
IPC: B21B37/62
CPC classification number: B21B31/074 , B21B37/58 , B21B37/62 , B21B2261/04 , B21B2265/12 , B21B2271/02 , B21B2275/06 , F16C17/02 , F16C33/107 , F16C2322/12
Abstract: A process inferentially determines hydrodynamic bearing flotation in a metal rolling operation for a metal roller bearing. The process receives from a mill stand processing the metal roll a rolling load of the metal roll, a gap between a pair of rollers pressing the metal roll, and a speed of the metal roll through the pair of rollers. The process further receives from the mill stand a gauge of the metal roll after the metal roll has passed through the pair of rollers. The process determines the hydrodynamic bearing flotation using the rolling load of the metal roll, the gap between a pair of rollers pressing the metal roll, the speed of the metal roll through the pair of rollers, and the gauge of the metal roll after the metal roll has passed through the pair of rollers. The process then adjusts the gap between the pair of rollers based on the determined hydrodynamic bearing flotation.
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公开(公告)号：US09796008B2
公开(公告)日：2017-10-24
申请号：US14439956
申请日：2012-11-30
Applicant: BAOSHAN IRON & STEEL CO., LTD.
Inventor： Yong Zhang , Xingze Zhou , Xuyi Shan , Konglin Zhu , Wenwang Meng , Chuanguo Zhang , Houjun Pang , Zhiling Gao
CPC classification number: B21B37/165 , B21B1/26 , B21B37/16 , B21B37/58 , B21B2205/02 , B21B2271/02
Abstract: The present invention relates to a method for producing hot rolled strip steel, especially the producing method of hot rolled strip steel with multiple target thicknesses in the longitudinal direction. It is a method to produce the strip steel with different target thicknesses in the longitudinal direction by using a hot continuous rolling mill. In this method, the first equal-thickness section of the strip steel is controlled with the conventional thickness control strategy, while other equal-thickness sections and the transition section between equal-thickness sections are controlled with the variable-thickness control strategy. Under the variable-thickness control strategy, the length of the first section of strip steel, the variation of thickness target value, the rolling stability and the spacing between stands are combined to determine the stand participating in the variable-thickness control, and calculate the roller gap value, as well as the time and speed of the variation of roller gap, thus achieving the producing control of strip steel with different target thicknesses in the longitudinal direction. The present invention utilizes the length of the first equal-thickness section and the variation of different target thicknesses and other related factors to determine the stands participating in the control, and then distributes the load variation among the stands, thus effectively avoiding the influence on the rolling stability due to imbalance of second flow, so that the produced strip with variable thickness in different sections in the longitudinal direction meet the user's requirements.
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公开(公告)号：US09694403B2
公开(公告)日：2017-07-04
申请号：US13695391
申请日：2011-04-18
Applicant: Gerald Eckerstorfer , Ansgar Grüss , Otto Schmid
Inventor： Gerald Eckerstorfer , Ansgar Grüss , Otto Schmid
CPC classification number: B21B37/50 , B21B37/52 , B21B37/58 , B21B39/02 , B21B39/12 , B21B41/00 , B21B41/10 , B65H20/34
Abstract: A method for reducing the strip tension of a rolling stock, may include: transporting the rolling stock using a roller table between two successive rolling units, wherein a rolling stock loop is formed in a depression in a section of the roller table between the two rolling units, the rolling stock loop being supported by the roller table at least in one off-center portion of the section, wherein the supporting line of the roller table in this portion corresponds to the catenary curve of the free span; measuring a loop depth of the rolling stock loop; calculating a desired value of the loop depth that corresponds substantially to the free span, e.g., depending on the material, thickness and temperature of the rolling stock; controlling the main drives and/or the gap adjustment of the rolling units based on the desired value and the measured loop depth, such that the loop depth substantially corresponds to the desired value.
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公开(公告)号：US20160339493A1
公开(公告)日：2016-11-24
申请号：US15114540
申请日：2015-01-09
Applicant: JFE STEEL CORPORATION
Inventor： Masayasu Ueno , Yoshimitsu Harada , Hidemasa Kodama , Tatsuhito Fukushima
CPC classification number: B21B37/68 , B21B37/58 , B21B37/74 , B21B38/02 , B21B38/04 , B21B39/082 , B21B45/004 , B21B2271/02 , B21B2273/04 , B21C51/00
Abstract: A cold rolling facility includes: a heating device; a tandem mill including a plurality of rolling mills; a meandering-amount measuring unit; a meandering-movement correction device; a shape measuring unit; a shape controller configured to control a shape of a steel sheet after being cold-rolled by the rolling mill located on the uppermost stream side; and a controller configured to control operations of the meandering-movement correction device based on a measurement value of a meandering-movement amount of the steel sheet by the meandering-amount measuring unit to control a meandering movement of the steel sheet before being heated, and configured to control operations of the shape controller based on a measurement value of a shape of the steel sheet by the shape measuring unit to control the meandering movement of the steel sheet that is attributed to cold rolling of the steel sheet by the tandem mill.
Abstract translation: 冷轧设备包括：加热装置; 包括多个轧机的串列式轧机; 一个曲折量测量单元; 曲折运动校正装置; 形状测量单元; 形状控制器，被配置为通过位于最上游侧的轧机进行冷轧后控制钢板的形状; 以及控制器，被配置为基于由所述蜿蜒量测量单元进行的所述钢板的曲折移动量的测量值来控制所述曲折移动校正装置的操作，以控制所述钢板在加热之前的曲折移动，以及 被配置为基于所述形状测量单元对所述钢板的形状的测量值来控制所述形状控制器的操作，以控制由所述串列式轧机对所述钢板的冷轧造成的所述钢板的曲折移动。
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30.发明申请公开(公告)号：US20150298186A1
公开(公告)日：2015-10-22
申请号：US14439956
申请日：2012-11-30
Applicant: BAOSHAN IRON & STEEL CO., LTD
Inventor： Yong Zhang , Xingze Zhou , Xuyi Shan , Konglin Zhu , Wenwang Meng , Chuanguo Zhang , Houjun Pang , Zhiling Gao
CPC classification number: B21B37/165 , B21B1/26 , B21B37/16 , B21B37/58 , B21B2205/02 , B21B2271/02
Abstract: The present invention relates to a method for producing hot rolled strip steel, especially the producing method of hot rolled strip steel with multiple target thicknesses in the longitudinal direction. It is a method to produce the strip steel with different target thicknesses in the longitudinal direction by using a hot continuous rolling mill. In this method, the first equal-thickness section of the strip steel is controlled with the conventional thickness control strategy, while other equal-thickness sections and the transition section between equal-thickness sections are controlled with the variable-thickness control strategy. Under the variable-thickness control strategy, the length of the first section of strip steel, the variation of thickness target value, the rolling stability and the spacing between stands are combined to determine the stand participating in the variable-thickness control, and calculate the roller gap value, as well as the time and speed of the variation of roller gap, thus achieving the producing control of strip steel with different target thicknesses in the longitudinal direction. The present invention utilizes the length of the first equal-thickness section and the variation of different target thicknesses and other related factors to determine the stands participating in the control, and then distributes the load variation among the stands, thus effectively avoiding the influence on the rolling stability due to imbalance of second flow, so that the produced strip with variable thickness in different sections in the longitudinal direction meet the user's requirements.
Abstract translation: 本发明涉及一种热轧带钢的制造方法，特别是在长度方向上具有多个目标厚度的热轧带钢的制造方法。 通过使用热连轧机制造长度方向不同目标厚度的钢带钢的方法。 在这种方法中，用常规的厚度控制策略控制带钢的第一等厚度部分，而用可变厚度控制策略来控制等厚度部分和等厚度部分之间的过渡部分。 在可变厚度控制策略下，组合钢带第一段长度，厚度目标值变化，轧制稳定性和支架间距，确定参与可变厚度控制的支架，并计算 辊间隙值以及辊间隙变化的时间和速度，从而实现纵向不同目标厚度的带钢的生产控制。 本发明利用第一等厚度部分的长度和不同目标厚度的变化以及其他相关因素来确定参与控制的台架，然后在支架之间分配负载变化，从而有效地避免对 由于第二次流动不平衡导致的滚动稳定性，使得沿长度方向的不同部分中生产的具有可变厚度的条带满足用户的要求。
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