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| Number | Title | Issue Date |
| 7926316 | Temperature control device for hot rolling mill A temperature control device for a hot rolling mill, preventing a sudden change in temperature of a rolled material near the delivery side of the rolling mill and realizing precise gauge control. The hot rolling mill has rolling stands arranged in a row and cooling ... | 04/19/2011 |
| 7310981 | Method for regulating the temperature of strip metal The invention relates to a method for controlling and regulating the temperature of a metal strip in a finishing train of a hot rolling mill. A target function is formed by comparing a desired temperature gradient with an actual temperature gradient. The target func... | 12/25/2007 |
| 7296450 | Apparatus and method for production of tapered steel pipe A production apparatus for a tapered steel pipe which holds the two ends of the steel pipe by shafts on carriers and moves it in the axial direction while rotating it to draw it to a taper by an intermediate working roll, wherein the shaft of the working roll is inc... | 11/20/2007 |
| 7251971 | Method for regulating the temperature of strip metal The invention relates to a method for controlling or regulating the temperature of a metal strip in a cooling path of a hot rolling system. A desired temperature gradient is compared to an actual temperature gradient in order to determine adjusting signals for the c... | 08/07/2007 |
| 7197802 | Control method for a finishing train and a finishing train According to a method, initial temperatures (T1) of strip points (101) are detected when the hot-rolled strip (6) is fed to the production line. The strip points (101) are monitored on their way through the production line. The hot-rolled... | 04/03/2007 |
| 7192551 | Inductive heating process control of continuous cast metallic sheets An apparatus for rolling of a powder metallurgical metallic workpiece is provided having a feeding device, a first induction heating apparatus in operable communication with a first RF generator and at least a first hot rolling mill. A process control device monitor... | 03/20/2007 |
| 7181943 | Descaling method for strip-rolling mill Strip is descaled in a rolling line having a scale scrubber and a finishing line downstream of the scale scrubber. The strip is sprayed with water on its upper and under sides at a descaling pressure in the scale scrubber. In the scrubber the strip is treated with w... | 02/27/2007 |
| 7140218 | Rolling apparatus and rolling method A rolling apparatus includes a pair of small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring before ... | 11/28/2006 |
| 7110840 | Master control system for a rolling mill A master control system for a rolling mill, especially a mill train, having at least one rolling stand driven by means of a drive system, and the master control system having an automation device for the open-loop and/or closed-loop control of the rolling stand. The... | 09/19/2006 |
| 7076983 | Apparatus and method for hot rolling The hot rolling apparatus of the present invention has a mill arranged on the preceding stage, mills of a plurality of stands arranged on the later stage which are different-diameter roll mills including a pair of different-diameter work rolls having an equivalent r... | 07/18/2006 |
| 7013691 | Peripheral length adjusting apparatus and peripheral length adjusting method for endless metallic ring In a peripheral length adjusting apparatus and a peripheral length adjusting method for an endless metallic ring, an endless metallic ring is wound on plural rollers, and an interval between the plural rollers is enlarged such that the endless metallic ring is stret... | 03/21/2006 |
| 6931703 | Rail producing method and producing equipment The present invention provides a method and equipment for producing a rail, the method and equipment being capable of lowering a bend at an end of a rail effectively and the truncation amount thereof. The present invention is a method for producing a rail, character... | 08/23/2005 |
| 6615633 | Metal plateness controlling method and device The present invention provides a method to control the flatness of a metal sheet or plate by effectively preventing waviness from occurring at the edge portions of the sheet or plate when it is cooled to the room temperature after completing hot rolling, ... | 09/09/2003 |
| 6336350 | Method for the flexible rolling of a metallic strip A method for the flexible rolling of a metallic band wherein, during the rolling procedure, the metallic strip is lead through a roll gap which is formed between two working rolls and which is set so that, over the length of the metallic strip, strip sect... | 01/08/2002 |
| 6327883 | Method of flattening metal strip Strip tension in metal strip subjected to a plastic deformation such as skin or dressing rolling, stretch bend leveling or stretching is adjusted by local variation of the temperature to establish a temperature profile which minimizes waviness and camber ... | 12/11/2001 |
| 6220067 | Rolled material temperature control method and rolled material temperature control equipment of delivery side of rolling mill Inter-rolling stand cooling devices are provided. When determining rolling speed and cooling water flows based upon the material temperature measured further upstream than the rolling mill, material positions detected by sensors on the mill line and infor... | 04/24/2001 |
| 5787746 | Multi-stand hot rolling mill tension and strip temperature multivariable controller A multivariable controller for a hot rolling mill which uses rolling stand speeds to control exit strip temperature and interstand tension, wherein the controller considers the inherent multivariable nature of the tension and temperature processes relativ... | 08/04/1998 |
| 5771732 | Steckel mill A Steckel mill or coiler rolling mill includes at least one reversing stand and drivers and coiler furnaces arranged on the entry side and the exit side of the reversing stand, wherein the reversing stand, the drivers and the coiler furnaces are connected... | 06/30/1998 |
| 5598729 | System and method for constructing wall of a tube An apparatus for constricting an end of a metallic tube (or worktube) to form an arcuate-walled portion that has an outer surface is provided. The apparatus comprises a means for rotating the tube on its axis, a movable means for heating an end portion of... | 02/04/1997 |
| 5517842 | Roll and strip cooling system for rolling mills An apparatus for cooling an upper work roll of a rolling mill stand and a strip of metal being rolled has a header to supply a coolant fluid to the work roll and a stripper with a wiper blade that contacts the surface of the work roll between the header a... | 05/21/1996 |
| 5255548 | Method for roller levelling of heavy plate A method of levelling metal plate in a leveller having at least three vertically opposed sets of driven and backed-up upper and lower work rolls mounted in at least three upper roll frames and a lower roll frame, each of the upper roll frames being adjust... | 10/26/1993 |
| 5235840 | Process to control scale growth and minimize roll wear A system for processing steel strips in a hot strip mill includes an apparatus and method for minimizing oxide growth on steel strips and reducing wear on work rolls in the finishing mill. In order to reduce oxide build up, steel strips are sprayed with c... | 08/17/1993 |
| 5125250 | Flying shear system with adaptive cut-length control and the operational method thereof A bloom is heated and rolled by the flying shear system so as to produce a semi-finish rolled billet having a reduced cross section. A CLSI value, which is indicative of the uniform length of each of a number of product billets that can be cut from the le... | 06/30/1992 |
| 4936132 | Continuous hot rolling process for making thin steel strip This invention provides a continuous hot rolling process for making thin strip in which it is possible to roll strips at high rolling speeds required to keep a finisher delivery temperature equal to or higher than an Ar3 transformation temperat... | 06/26/1990 |
| 4840051 | Steel rolling using optimized rolling schedule A series of thermomechanical workings such as temperature-controlled torsional strains are applied to a specimen of steel at strain and temperature levels and interpass times selected to simulate rolling mill conditions. The measured stress values are com... | 06/20/1989 |
| 4785646 | Method of cooling hot-rolled steel plate A method of water cooling a hot-rolled steel plate is disclosed. In this method, while a hot-rolled steel plate is being advanced lengthwise, a plurality of nozzles spray cooling water to the steel plate, and thus the plate is cooled to a predetermined te... | 11/22/1988 |
| 4768363 | Method of levelling two-layered clad metal sheet A method for preventing the camber of a two-layered clad metal sheet having a base layer and a covering layer of different metals which exhibit different amounts of thermal contraction. The method comprises developing a temperature difference Ɗ T express... | 09/06/1988 |
| 4765169 | Method of tension leveling nonhomogeneous metal sheet A method of tension leveling a continuous strip of nonhomogeneous metal sheet in which the yield strength of the strip edges is less than the yield strength of the center. The method includes the steps of unwinding the strip from a coil supported on an un... | 08/23/1988 |
| 4662202 | Low tension cascade mill speed control by current measurement with temperature compensation A cascade speed control for tensionless production in a rolling mill by the measurement of stand motor current with temperature compensation. A low tension speed ratio between pairs of mill stands is calculated by successive incremental corrections. The c... | 05/05/1987 |
| 4658614 | Shape control apparatus for flat material A rolling mill shape control apparatus for a flat material comprises a thermal crown calculator which calculates a thermal crown magnitude in a widthwise direction of rolls as based on rolling history information after a change in vertical spacing of the ... | 04/21/1987 |
| 4648256 | Shape control apparatus for flat material A shape control apparatus for producing rolled products from flat material comprising a plurality of rolls for shaping the material. Temperatures at a plurality of points, including a widthwise center of the material lying on an incoming side of the rolls... | 03/10/1987 |
| 4606006 | Method of controlling the rolling efficiency in hot rolling A method of controlling the rolling efficiency in a continuous hot rolling process. A rolling schedule and a conveying schedule are determined on a mill line for the slabs arranged in succession based on an aimed extraction temperature of the slabs from a... | 08/12/1986 |
| 4589268 | Method of controlling mill pacing According to the present invention, in a method of controlling a mill pacing in a rolling equipment wherein a plurality of serial rolling mills are provided downstream of a heating furnace in which a plurality of materials are rested on a furnace hearth i... | 05/20/1986 |
| 4506531 | Control method and apparatus for screwing down reeling rolls A control method for controlling the screwing down pressure provided in a reeling mill where the reels are controlled by a combination of signals continuously monitored by a computer. The signals include the temperature of the pipe entering the reeling mi... | 03/26/1985 |
| 4501552 | Method for controlling furnace temperature In controlling furnace temperature, a desired temperature profile of a slab in a direction along its movement through a furnace is calculated by using an expression for total fuel flow as a function of slab temperature and minimizing the total fuel flow. ... | 02/26/1985 |
| 4379396 | Operation of a multi-stand hot rolling mill A multi-stand rolling mill is operated so that strip of suitable shape and metallurgical properties is produced at a faster speed than possible heretofore by threading the mill at a relatively slow speed and adjusting the rolling loads on the stands to gi... | 04/12/1983 |
| 4373364 | Method of controlling the temperature of a heating furnace A temperature controlling method for heating, with a heating furnace having at least one heating zone provided with a controllable heating means, materials charged into the heating furnace such that an aimed temperature of the material is reached by the t... | 02/15/1983 |
| 4274273 | Temperature control in hot strip mill A method for controlling the temperature of a workpiece in a hot strip mill includes calculating temperature changes of the strip at each mill stand location by determining changes in workpiece deformation resistance and correlating the changes in deforma... | 06/23/1981 |
| 3990284 | Method of and device for controlling the planeness of band-shaped material A method of and device for controlling the planeness of band-shaped material, according to which the band to be rolled is, in a continuous manner, passed into the roller gap of and between two rollers while the temperature of the band being rolled is meas... | 11/09/1976 |
| 3958435 | Method for controlling the profile of workpieces on rolling mills There is described a method for controlling the profile of a workpiece on a rolling mill, wherein the workpiece is imparted with a predetermined profile in the roughing stage which is suitable for further control in the following finishing stage. In the f... | 05/25/1976 |
