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| Number | Title | Issue Date |
| 8047033 | Plastic working method and plastic working system A plurality of press devices 2 are arranged in a plastic working system. The plastic working system includes: a loop correction sensor 13 for watching a slack of a coil material C intermittently delivered from a preceding first press device 2... | 11/01/2011 |
| 8020417 | Method and device for controlling a rolled product thickness at a tandem rolling mill exit A method and device for controlling the final thickness of a rolled product at a tandem rolling mill exit which make it possible to remove the cyclic defects of the product thickness variation. The method includes using at least one rolling stand provided with hydra... | 09/20/2011 |
| 7854154 | Process and computer program for controlling a rolling process The invention relates to a method for controlling a rolling process, in which a metal strip is rolled flat by use of at least one roller. It is known from the prior art that the relative position of a neutral point represents a measure of the instantaneous stability... | 12/21/2010 |
| 7341096 | Method for processing a continuously cast metal slab or strip, and plate or strip produced in this way The invention relates to a method for processing a continuously cast metal slab or strip, in which the slab or strip is passed between a set of rotating rolls of a rolling mill stand in order to roll the slab or strip. According to the invention, the rolls of the ro... | 03/11/2008 |
| 7310982 | Rolling method and rolling apparatus for flat-rolled metal materials The invention provides a rolling method for a flat-rolled metal material and a rolling apparatus for the method each capable of stably producing a flat-rolled metal material free from camber or having an extremely light camber. The method is a rolling method of a fl... | 12/25/2007 |
| 7185519 | Methods and apparatus for monitoring and conditioning strip material Methods and an apparatus for monitoring and conditioning strip material are disclosed. The disclosed methods and apparatus receive encoder signals and sensor data to monitor a condition of a strip material. If an undesired material condition is detected, a material ... | 03/06/2007 |
| 7185520 | Dynamic thickness correction The invention relates to a method and a device for correcting the thickness of a metal strip during rolling comprising a roll stand with adjusting elements to regulate the thickness of the strip and at least one take-up coiler. The object to provide a method and a d... | 03/06/2007 |
| 7155951 | Mill variation control apparatus and method Apparatus and method for reducing vibration in a mill stand. The apparatus comprises a roll (4) positioned upstream or downstream of the mill stand (1) and over which the strip material (2) being rolled is passed. The vibration control apparatus... | 01/02/2007 |
| 7137283 | Plate reduction press apparatus and methods A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with ... | 11/21/2006 |
| 7086260 | Method and device for controlling the thickness of a rolled product The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands (1–5) operating in tandem and associated with a general speed control system of the... | 08/08/2006 |
| 6619086 | Control system for tandem rolling mill In a tandem rolling mill control system, an arithmetic operation on a looper torque command is adopted so that a signal obtained by integrating a looper angle deviation is not contained as a component, and a looper speed controller performs an arithmetic ... | 09/16/2003 |
| 6484546 | Strip deflection roller, especially a tension measuring roller or looper roller A strip deflection roller, especially a tension measuring roller or looper roller for matching tension in rolling stock between two roll stands for hot rolling and cold rolling of strip. The strip deflection roller includes at least five adjacent disks wh... | 11/26/2002 |
| 6470722 | Looper A looper for measuring a wedge proportion of a longitudinal pull present within a strip in a longitudinal direction of the strip, wherein the wedge proportion is present across a width of the strip, has a looper shaft and pivot arms each having a first en... | 10/29/2002 |
| 6463777 | Method for the continuous production of a metal strip The invention aims at a method of producing a metal strip on a continuous treatment line comprising a de-scaling station coupled with a cold rolling section. According to the invention, in order to adapt to a change in the production constraints, such as ... | 10/15/2002 |
| 6378346 | Steckel hot rolling mill The invention relates to a Steckel hot rolling mill comprising at least one reversing roll stand (1) as well as coilers (6,7) which are positioned upstream and downstream and present torque-controlled drives. The aim of the invention is to improve such a ... | 04/30/2002 |
| 6357273 | Method of reducing waste in the rolling of strip segments interconnected by weld seams A tandem strip-rolling line has a strip store between the mill so that when the upstream mill is open on the approach of a weld seam joining successive lengths, the downstream mill rolls strip stored in the strip store and conversely when the strip is hal... | 03/19/2002 |
| 6349581 | Method for controlling the tension between roll stands of mill trains for steel bars, wire or profiles Rolling stock is transported in a transporting device from a front roll stand to a rear roll stand. Between the roll stands, the rolling stock carries out an oscillation transverse to the transporting direction. At least one characteristic property, ampli... | 02/26/2002 |
| 6269668 | Cold tandem rolling method and cold tandem rolling mill The present invention is to provide a tandem cold rolling method conducted by a tandem cold rolling mill, the number of rolling stands of which is not less than 4, wherein a rolling tension, the intensity of which is not lower than 30%, preferably not low... | 08/07/2001 |
| 6227021 | Control apparatus and method for a hot rolling mill A control apparatus for a hot rolling mill having a plurality of rolling stands, including a roll gap tension controller configured to control a roll gap of one of the rolling stands so that a detected interstand tension value of a rolled material positio... | 05/08/2001 |
| 6199417 | Tension control method for a rolling stock section A tension control method for a rolling stock section located between a front roll stand and a rear roll stand of a rolling train, wherein a tensioning element with an actual adjusting force is adjusted relative to the rolling stock section, so that the ro... | 03/13/2001 |
| 6185967 | Strip threading speed controlling apparatus for tandem rolling mill A strip threading speed controlling apparatus for a tandem rolling mill is constructed to calculate a speed set value of two adjacent rolling stands by using a forward slip predicted considering a back tension without considering a front tension in an ups... | 02/13/2001 |
| 6176112 | Method and device for dynamic adjustment of the roll gap in a roll stand of a mill train having multiple stands A method of dynamic adjustment of the roll gap in a roll stand of a mill train having multiple stands for rolling a strip, with a strip stock, i.e., a loop, between two roll stands being adjusted or limited by a loop or a strip stock control, with the dyn... | 01/23/2001 |
| 6148653 | Rolling apparatus and a rolling method The present invention aims to provide a rolling system and a rolling method capable of avoiding the occurrence of a pinch fold by effectively preventing the zigzag movement of a rear end portion of a material to be rolled. The rotational speeds (rolling s... | 11/21/2000 |
| 6079242 | Control process for continuous skin pass operation for metal strip A method of controlling a continuous skin-pass and reduction operation for a metal strip includes the steps of passing a strip through a gap between working rollers of at least two successive rolling stands, only an upstream one of the stands providing su... | 06/27/2000 |
| 5873277 | Control process for a roll stand for rolling a strip The invention relates to a control process for a roll stand consisting of a pair of work rolls, a pair of backup rolls, and optionally a pair of intermediary rolls. The controls for a rolling force, a deflecting force, and optionally a roll shift are give... | 02/23/1999 |
| 5829286 | Method for continuously leveling strip by measuring nonplanarity of the strip The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 11/03/1998 |
| 5829287 | Method for continuously leveling thin metal The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 11/03/1998 |
| 5809817 | Optimum strip tension control system for rolling mills A system and method for achieving an optimum interstand strip tension providing substantially equal loading of adjacent stands of a tandem rolling mill where such optimum tension is determined by the expression ##EQU1## where A1 and B1 are, respectiv... | 09/22/1998 |
| 5799526 | Process and plant for cold rolling with compensation for ovalization of the rolling rolls A process for the cold rolling of a metal strip between rollers of rolling stands arranged sequentially is provided, along with a plant for its implementation, wherein the process involves: analyzing, as a function of frequency, a signal from an inter-stand te... | 09/01/1998 |
| 5784914 | Method to control between rolling stands the drawing of the rolled stock and relative device A method of controlling and maintaining a drawing force applied to a length of rolled stock between two-spaced apart rolling units includes the steps of determining the value of at least one of a frequency and an amplitude of a transversed vibration of th... | 07/28/1998 |
| 5722279 | Control method of strip travel and tandem strip rolling mill A control method of strip travel for ensuring, in a tandem rolling operation for metal strips, stable positioning of rolled work during the rolling process including the rolling of the leading and trailing ends of the work, and a tandem rolling mill in wh... | 03/03/1998 |
| 5718138 | Looper control system for a rolling mill A looper control system has a looper that is interposed between two rolling stands of a tandem rolling mill and is actuated by a hydraulic actuator; and a control calculating section for calculating a speed change rate command value of a primary rolling m... | 02/17/1998 |
| 5704237 | Apparatus for continuously leveling thin metal strip The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 01/06/1998 |
| 5701774 | Control device for a continuous hot-rolling mill A control device for the purpose of achieving highly precise rolled material. The response and robust stability of the rolled material tension and looper height are specified, and a controller is designed so that the rolling mill main motor and looper ope... | 12/30/1997 |
| 5660066 | Interstand tension controller for a continuous rolling mill An interstand tension controller for a continuous rolling mill having a plurality of rolling stands and provided with a looper between the adjacent rolling stands controls two controlled variables, i.e., the interstand tension of the workpiece and the loo... | 08/26/1997 |
| 5640870 | Tension control of a fin forming device A fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. The fin mill machine (12) includes a tension control subsystem (20) employing a pneumatic cylinder (32) to create the tension which is ... | 06/24/1997 |
| 5535610 | Method and apparatus for eliminating crossbow in metal strip The cross bowing in metal strip, especially thin metal strip of a thickness less than 2 mm, is removed by providing downstream of the high tensioned section of the strip at which stretch leveling or stretch bend leveling is effected at least one correctin... | 07/16/1996 |
| 5509285 | Method and apparatus for measuring flatness and rolling control apparatus A rolled strip extending out of a rolling stand is pushed by a push roll to apply a tension to the strip. The flatness measuring surface of a flatness bar is moved above the pass line to measure flatness values at a plurality of points in the widthwise di... | 04/23/1996 |
| 5479803 | Control apparatus for a continuous hot rolling mill A setting means sets variables for expressing the process model, a target thickness value of the rolled material, a target interstand tension value of the rolled material, variables for responses of the thickness and the interstand tension and variables f... | 01/02/1996 |
| 5392977 | Coil material supply apparatus for an intermittent feed device A coil material supply apparatus is provided between an uncoiler for unwinding a coil material (or a leveler for flattening the unwound coil material) and an intermittent feed device of a mechanical press. This apparatus includes a pair of feed rollers fo... | 02/28/1995 |
