GB2166569A - Arrangement for the automated control, balancing and diagnosis of rolling processes - Google Patents
Arrangement for the automated control, balancing and diagnosis of rolling processes Download PDFInfo
- Publication number
- GB2166569A GB2166569A GB08527001A GB8527001A GB2166569A GB 2166569 A GB2166569 A GB 2166569A GB 08527001 A GB08527001 A GB 08527001A GB 8527001 A GB8527001 A GB 8527001A GB 2166569 A GB2166569 A GB 2166569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- control
- micro
- roll
- foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D5/00—Control of dimensions of material
- G05D5/02—Control of dimensions of material of thickness, e.g. of rolled material
- G05D5/03—Control of dimensions of material of thickness, e.g. of rolled material characterised by the use of electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/18—Automatic gauge control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Metal Rolling (AREA)
- General Factory Administration (AREA)
- Metal Rolling (AREA)
Abstract
In a rolling process for metallic or non-metallic material analogue control equipment (1,2,6,7,20,21,22,23,24) is used to control significant process variables in accordance with specific algorithms. This is achieved by linking function elements for gathering process variables such as material speed, roll speed, material thickness, material tension, coil mass on the intake and/or discharge sides, roll screw-down pressure, roll roughness, roll oil pressure, cooling water temperature, roll oil temperature, bearing temperature and also disturbance and stoppage times and ancillary technological information to a supervisory micro-computer (3) and a diagnostic microcomputer (4) which interfaces with superior data processing levels. <IMAGE>
Description
SPECIFICATION
Arrangement for the automated control balancing and diagnosis of strip and/or foil rolling processes
The invention can be used for process optimising, monitoring and balancing for strip and/or foil production and the processing of metallic and non-metallic materials.
For controlling strip and/or foil rolling processes, corresponding apparatus and methods have already been proposed in which in principle the premise is adopted that the strip tension upstream and downstream of the roll gap, the roll gap and the rolling speed substantially influence the strip thickness. Therefore, these values are maintained constant by high-speed control systems or alternatively other values are used for indirectly carrying out dynamically high-grade control. For example, the reel current serves as a measure of the strip tension, the rotary speed of the rolls as a measure of the rolling speed and the screw-down position, the rolling force or the specific quantity of rolling oil used serve as criteria for the roll gap.
For example, AT-PS 240 482 describes an apparatus in which the thickness of the incoming strip and also its speed on entry and exit are measured. With an analogue computer, the actual value of the thickness of the emerging strip is calculated and compared with whatever desired value is set. A comparative signal derived therefrom is fed to a thickness controller. This apparatus has the disadvantage that where thickness fluctuates due to differing quality parameters of the incoming material in relation to the outgoing thickness the accuracy of control is too small and cannot be applied for example in the case of foil pre-strip and foil roller. If this apparatus is used, process control embracing the complex rolling process on a basis of given target criteria is not possible.
German Patent Specification No. 28 36 595 discloses an apparatus for controlling the roll strip thickness ina tandem rolling train. The apparatus is characterised in that a computer unit in the control arrangement for each regulated roll stand calculates a correction value from the deviation of roll aperture and rolling stock parameters and in that, on the basis of the correction value and desired strip tension fed to it, a control member controls the positioning member of an arrangement adapted to influence the strip tension and which exerts a correspondingly modified traction on the rolling strip.
This apparatus has disadvantages in that although thickness control is feasible and when anomalous rolling conditions arise, measures are put into effect, process control as a function of the state of the overall technological system and a combination of specific control algorhythms for strip pull-back and strip speed in order to achieve optimum roll pass parameters is not possible on a basis of this apparatus. By reason of the control accuracy being too great and the impossibility of simultaneously influencing the complex values such as for example those of the foil rolling process, it is not suitable for the foil pre-strip and foil rolling.A complex solution is suggested in Rech et al 'Modulares Automatisierungssystem fur Raltwalzwerke' (Modular Automating System for Gold Rolling Mills), Rarlsruhe, Nuclear Research Centre 1980, PDV Reports, wherein on the basis of auto-adaptive process models for rolling force, rolling moment, lead and stand suspension, it is possible to control multi-stand cold rolling mills.
This complex solution has the disadvantage that with regard to automation of rolling stands with analogue control equipment and manual reference value input, hardware and software costs are very high and the aim of extensive utilisation and incorporation of existing control equipment for strip pull and/or strip speed to arrive at a solution for adaptive process control is only fulfilled to a limited degree. For foil pre-strip and foil rolling, the aforesaid prior art solution alternatives cannot be applied since, as a reference value, the roller stand or housing suspension, in the case of pretensioned roller housings, can only be ascertained partially and with considerable error deviations while as a reference value also, rolling force and moment in the case of pretensioned roller housings are not significant to controlling the rolling process.
The object of the invention is an arrangement for the automated micro-computerguided control of strip or foil rolling processes by means of which, on a basis of the situation as a whole, strips and foils can be produced and handled at relatively low cost, with increased production throughput per unit of time, with a guarantee of high quality, with a reduction in specific material consumption and with a reduction in technology-related stoppage times and improved manmachine communication.
The invention is based on the problem of developing an arrangement for the automated control, balancing and diagnosis of strip and foil rolling processes by means of which roller housings with analogue control equipment and manual guide value input for significant process values can be controlled as a function of specific algorhythms according to predetermined target criteria and the process situation down to less than 5,um range of final thickness of the material being shaped.
The arrangement for automated control, balancing and diagnosis of strip and/or foil rolling processes and its integration into the framework of a complex production control system is brought about by linking functional components for detecting process variables such as for example strip speed, roll feed, strip thickness, strip pull, the coil mass on the intake and discharge sides, the roll screwdown pressure, roll roughness, rolling oil pressure, cooling water temperature, rolling oil temperature, roll and plain bearing temperatures as well as disturbance and shut-down times and ancillary technological data, with a data processing system based on micro-computer modules including system elements for man-machine communication and defined interfaces for superior data processing levels as well as equipment for guide value input and/or data utilisation.
The arrangement according to the invention is characterised by a roller stand or housing for a strip or foil rolling process, thickness measuring systems on the intake and discharge sides as well as a thickness measuring system guidance equipment for the roller housing, analogue control equipment for strip speed, strip pull, rolling oil pressure, rolling oil temperature, cooling water temperature for the roll screw-down pressures and for bend-back or crowning pressures, a unit which links the thickness measuring systems and the analogue control equipment for strip speed and pull as well as a micro-computer system for process control and optimisation for controlling the strip thickness, strip speed and strip pull levels, a man-machine communication system constituted by a situation display, input and display means, a colour display as well as terminal keyboards, screen monitor and printer, weighing systems on the intake and discharge sides, equipment for detecting and handling analogue, binary and digital data, equipment for data utilisation and a microcomputer system for balancing and diagnosis, including a means of transmission to superior data processing levels.
On the stands of the roller housing, thickness measuring systems are provided on the intake and discharge sides for measuring the strip or foil thickness. These and the thickness measuring system guide equipment are connected to the analogue control equipment for strip speed and pull via a linking unit for controlling the strip or foil thickness, strip or foil pull and strip or foil speed.
The thickness measuring systems are at the same time coupled to the superior micro-computer system for process control and process optimisation. Furthermore, there is a direct connection between the thickness measuring systems on the intake and discharge sides and the in situ display elements provided in the guidance equipment for the thickness measuring system at base level and the microcomputer system for process control and optimisation as a control system.
On the drives for the roll housing there are rotary speed measuring devices as an integral part of the analogue control equipment for the strip speed. Superior to this analogue control system for strip speed is the micro-computer system for process control and optimisation for controlling the strip or foil thickness and the strip speed.
As a constituent part of the analogue control system for the strip pull levels, measuring equipment is provided at the reel drives of the roll housing and are likewise connected to the superior micro-computer system for process control and optimisation in order to control the strip or foil thickness and strip pull.
Furthermore, the guidance equipment for the thickness measuring system is connected to the analogue control layout for the strip speed and strip pull through a linking unit so that it is possible for the analogue control equipment for the strip speed and pull to be fed with this information separately or simultaneously.
At the same time, the microcomputer system for process control and process optimisation is so connected via this linking unit to the analogue control equipment for the tape governing strip speed and pull levels that it is possible for this control equipment to be fed with guide values separately or in combination for controlling the strip or foil thickness, strip speed and strip pull levels.
As constituent parts of the analogue control equipment for the roll oil pressure and roll oil temperature, measuring probes are provided on the roll housing. This control equipment is subordinate to the micro-computer system for process control and process optimisation for controlling the strip or foil thickness, the strip speed and the strip pull levels, so that controlling the roll oil temperature and oil pressure is carried out as a function of the process situation and in accordance with control strategy applicable to the rolling process.
Associated with the micro-computer system for process control and process optimisation for controlling the strip or foil thickness, the strip speed and strip pull is the analogue control equipment for the cooling water temperature which is connected to the measuring probes in the cooling water lines, the rolling and plain bearings and roll and reel drives so that cooling control guarantees process control.
Provided in the actuating pressure equipment on the roll housing for the bending-back and crowning equipment and for roll screwdown are measuring sensors or probes which are connected to the associated analogue control equipment for the bending-back and/or crowning pressures and for the roll screwdown pressures. In the same way, these analogue control devices for bending-back and/or crowning pressures and for roll screw-down pressures are subordinate to the micro-computer system for process control and process optimisation for the control of strip thicknesses, strip speed and strip pull, so that these process parametersare integrated into the control of the rolling process. In order to detect disturbance and stoppage a times and technological data, detection equipment is provided on the roller housing and connected to a micro-computer system for balancing and diagnosis.The micro-computer system for balancing and diagnosis is linked directly to the micro-computer system for process control and process optimisation, so that reciprocal exchange of data takes place.
At the same time, the micro-computer system for balancing and diagnosis is linked by a transmission system to the superior data processing level within the framework of a production control layout. Automated control, balancing and diagnosis of the strip or foil rolling process takes place as a function of the process situation as gathered by both micro-computer systems, predetermined target criteria and the stored technological parameters of the ranges of strip or foil to be rolled out.
It is intended to explain the invention hereinafter with reference to an example of embodiment in which the drawing shows an overall block layout diagram of the arrangement for automated control balancing and diagnosis of strip and/or foil rolling processes.
From the roll housing 1, equipment for detecting and handling analogue, binary and digital data 13 passes process parameters or situation variables to the micro-computer system for process control and process optimisation 3 for the purpose of controlling the strip or foil thickness, the strip speed and the strip pull levels and to the microprocessor system for balancing and diagnosis 4. At the same time, there are in the roll housing 1 measured value transmitters and means of data utilisation as constituent parts of the analogue control equipment for strip speed 6, strip pull 7, roll oil pressure 20, roll oil temperature 21, cooling water temperature 22, bending-back and/or crowning pressures 23 and roll screwdown pressures 24. Plant personnel can on site manually control the roll housing 1 by using the input and display equipment 11 and the situation display 10.In this respect, the situation display 10 establishes the guidance variables for the analogue control equipment for strip speed 6 and for analogue control equipment for strip pull 7 if the rolling process is controlled manually. The situation display 10 at the same time displays the strip weights recorded by the weighing system on the intake side 8 and the weighing system on the discharge side 9 for the purposes of the plant personnel on the spot. According to the cycle control provided by the intake and discharge side weighing systems, results provided by the weighing system on the intake side 8 and by the weighing system on the discharge side 9 are fed to the micro-computer system for process control and process optimisation 3 or alternatively cause appropriate control signals to be triggered by the micro-computer system for process control and process optimisation 3.The intake and discharge side thickness measuring systems 2.1, 2.2 of the roll housing are switched directly to the micro-computer system for process control and optimisation by means of a special electronic adaptive unit. At the same time, there is direct connection from the thickness measuring system guide equipment 2.3 to the analogue control equipment for analogue control of strip speed 6 and for analogue control of strip pull 7 through a linking unit 19 which is furthermore connected directly to the microcomputer system for process control and optimisation 3.And so there is a situationdependent linking with or separation of the analogue control equipment for strip speed 6 and for strip pull 7 by the micro-computer system for process control and optimisation 3 with a corresponding reference input preset by the microcomputer system for process control and optimisation 3 to the analogue control equipment for strip speed 6 and the analogue control equipment for strip pull 7 or only to the analogue control equipment for strip speed 6 or only to the analogue control equipment for strip pull 7, non-activation resulting in the relevant analogue control equipment for strip speed or for strip pull 6,7 to remain subject to the respective original reference values.In accordance with this basic mode of operation, and on the basis of specific algorhythms, the micro-computer system for process control and process optimisation 3 controls the strip speed, strip pull and strip thickness just as there is control based on optimisation algorhythms. The necessary communication between the micro-computer system for process control and process optimisation 3 and the roll housing 1 is carried out by means of data utilisation equipment 15.
As constituent parts of the man-machine communication system, an input and display unit 11 is installed on the spot as a microcomputer terminal on the roll housing 1 and a colour display 12 is provided for the optional display of specific process situations. The input and display unit 11 and the colour display 12 are coupled directly to the micro-computer system for process control and process optimisation 3.
On the basis of input data available to the micro-computer system for process control and process optimisation 3 and emanating from equipment for detecting and handling analogue, binary and digital data 13, the analogue control equipment for strip speed 6, the analogue control equipment for strip pull 7, the analogue control equipment for roll oil pressure 20, the analogue control equipment for roll oil temperature 21, the analogue control equipment for cooling water temperature 22, the analogue control equipment for bending-back and/or crowning pressures 23 and the analogue control equipment for roll screwdown pressures 24 in respect of the situation as a whole as it relates to the strip and/or foil rolling process and the control algorhythms within the framework of a real time control programme system by the micro-computer system for process control and process optimisation 3, the strip thickness, strip speed and strip pull are controlled in accordance with optimisation strategy via the data utilisation equipment 15 and the coupling unit 19 as well as by a reference input preset for the analogue control equipment for strip speed 6, the analogue control equipment for strip pull 7, the analogue control equipment for roll oil pressure 20, the analogue control equipment for roll oil temperature 21, the analogue control equipment for cooling water temperature 22, the analogue control equipment for bending-back and/or crowning pressures 23 and the analogue control equipment for roll screwdown pressures 24.Thus it is possible to control the reduction in the thickness of the material to be shaped, to narrow the strip or foil thickness tolerances considerably more and at the same time to increase output for the same input of material, the disturbance levels or anomalous process situations being compensated for by the roll housing 1 with an adaptive and flexible adjustment of working points within the parameter range acceptable within the confines of technology and/or safety, to the exclusion of subjective influencing factors.By coupling the microcomputer systems for process control and process optimisation 3 and for balancing and diagnosis 4 in order to achieve exchange of data and in order to detect and handle specific process data from the roll housing 1 through the microcomputer system for balancing and diagnosis and via the equipment for detecting and handling analogue, binary and digital data 13, the strip and/or foil rolling process can be balanced and diagnosed. In this respect, the microcomputer system for balancing and diagnosis 4 can work out special diagnostic routines for specific parts of the complex or for the technological system in its entirety and process basic data in the form of, for instance, coil, breakdown and/or pass and shift records.At the same time, the micro-computer system for balancing and diagnosis 4 is connected via the transmission equipment 5 to the superior data processing level within the framework of a complex production control system.
Associated with the micro-computer system for process control and process optimisation 3 and micro-computer system for balancing and diganosis 4, there are as units in the manmachine communication system in the control plane communication means comprising terminal keyboards 14, screen monitors 16 and printers 17. On a basis of the data availability which prevails here concerning the overall technological system, this equipment at the same time has the function of a technological workplace. In the external data storage unit 18, compressed or prepared process data can be stored as base material for working study analysis and as evaluation routines to be performed by the micro-computer system for balancing and diagnosis 4.
The arrangement according to the invention is characterised by various advantages.
By reason of the modular structure of the arrangement, an automation system for strip and/or foil rolling processes down to a range of finished thickness of less than 5Am can be achieved with relatively low cost and incorporating existing analogue control systems with no stoppage time for conversion of the technological equipment.
Furthermore, it is possible to carry out ba lacing and diagnosis of the overall technological system, simultaneously providing base data or compressed information for process analysis or working study analysis and, within the framework of a complex production control system, to provide a data link to superior data processing levels or the level at which the plant's reproduction process is controlled.On a basis of adaptive process control or process optimisation, further economically effective and useful elements are the increase in production throughput per unit of time, increased yield, maintenance of a constantly high level of quality in rolled strip or foil, reduction in specific material consumption by controlling the rolling process within a narrowed tolerance range and in a minus tolerance range and by lowering material losses due to technically or technologically occasioned disturbances in the plant or in the downstream handling stages, such as for example strip cracking.
Furthermore, the arrangement according to the invention guarantees an increase in machine and plant utilisation, energy saving in the plant itself and in the downstream handling stages, an operational programme which is easy on the machinery and plant, a reduction in transport costs and the exclusion of objective and other disturbing influences.
List of reference numerals used
1 Roll housing 2 Thickness measuring systems 2.1 Thickness measuring system, intake side 2.2 Thickness measuring system, discharge side 2.3 Thickness measuring system control equipment 3 Micro-computer system for process control and process optimisation 4 Micro-computer system for balancing and diagnosis 5 Transmission unt 6 Analogue control equipment for strip speed 7 Analogue control equipment for strip pull 8 Weighing system, intake side 9 Weighing system, discharge side
10 Situation display
11 Input and display equipment 12 Colour display 13 Equipment for gathering and handling analogue, binary and digital data 14 Terminal keyboards 15 Equipment for data utilisation 16 Screen monitors 17 Printer 18 External data storage unit 19 Linking unit 20 Analogue control equipment for roll oil pressure 21 Analogue control equipment for roll oil temperature 22 Analogue control equipment for cooling water temperature 23 Analogue control equipment for bendingback and/or crowning pressures 24 Analogue control equipment for roll screwdown pressures
Claims (4)
1. An arrangement for the automated control balancing and diagnosis of strip and/or foil rolling processes with a data processing system based on micro-computer modules including system elements for man-machine communication and defined interfaces with superior data processing levels and equipment for reference input preset and data utilisation, characterised by, disposed on stands of a roll housing (1), and for measuring the strip and/or foil thickness, thickness measuring systems on the intake and discharge sides (2.1; 2.2) as well as associated thickness measuring system control equipment (2.3) linked by a coupling unit (19) to analogue control equipment for strip speed (6) and strip pull (7) for controlling the strip and/or foil thickness, the strip and/or foil pull and the strip and/or foil speed and being coupled at the same time to a superior micro-computer system for process control and process optimisation (3), there being a direct link between the thickness measuring systems on the intake and discharge sides (2.1; 2.2) and the in situ display elements provided in the'control equipment for the thickness measuring system (2.3) at base level and the micro-computer system for process control and process optimisation (3) as a guidance system, the micro-computer system for process control and process optimisation (3) being for controlling the strip and/or foil thickness and the strip speed superior to the analogue-control equipment for strip speed (6) and for controlling the strip and/or foil thickness and strip pull (7), and characterised furthermore by, for separate or combined application of reference values for controlling strip and/or foil thickness, strip speed and strip pull, a connection between the micro-computer system for process control and process optimisation (3) via the linking unit (19) to the analogue control equipment for strip speed (6) and strip pull (7) and furthermore characterised by, installed on the roll housing (1), analogue control equipment for roll oil pressure (20), roll oil temperature (21), cooling water temperature (22), connected to analogue control equipment for the bending-back and/or crowning pressures (23) and roll screw-down pressures (24), this analogue control equipment (20, 21, 22, 23, 24) being subordinate to the micro-computer system for process control and process optimisation (3), and being furthermore characterised by, disposed on the roll housing (1) and providing communication between plant personnel and the control system, input and display equipment (11) in the form of a micro-computer terminal and weighing systems on the intake and discharge sides (8, 9) for balancing the strip and/or foil rolling process, connected directly to the micro-computer system for process control and process optimisation (3), and also with, for detecting disturbance and stoppage times and technological data concerning the strip and/or foil rolling process, a micro-computer system for balancing and diagnosis (4) which is coupled to the micro-computer system for process control and process optimisation (3) in order to ensure reciprocal exchange of data.
2. Arrangement according to claim 1, characterised in that as a constituent part of the analogue control equipment for the strip speed, rotary speed measuring devices are located on the drives of the roll housing (1).
3. Arrangement according to claim 1, characterised in that the thickness measuring systems on the intake and discharge sides (2.2; 2.2) of the roll housing (1) are switched by a special electronic adaptive unit contained in the thickness measuring system of the control equipment (2.3) directly to the micro-computer system for process control and process optimisation (3).
4. An arrangement for the automated control, balancing and diagnosis of strip and/or foil rolling processes as claimed in claim 1, substantially as described herein with reference to and as illustrated by the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD26911084A DD229945A1 (en) | 1984-11-05 | 1984-11-05 | ARRANGEMENT FOR THE AUTOMATED CONTROL, ACCOUNTING AND DIAGNOSIS OF BAND AND BZW. FOIL ROLLING PROCESSES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8527001D0 GB8527001D0 (en) | 1985-12-04 |
| GB2166569A true GB2166569A (en) | 1986-05-08 |
| GB2166569B GB2166569B (en) | 1989-02-01 |
Family
ID=5561941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08527001A Expired GB2166569B (en) | 1984-11-05 | 1985-11-01 | Arrangement for the automated control of a strip rolling process |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH669054A5 (en) |
| DD (1) | DD229945A1 (en) |
| DE (1) | DE3536666A1 (en) |
| FR (1) | FR2572663A1 (en) |
| GB (1) | GB2166569B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477422A1 (en) * | 1990-09-28 | 1992-04-01 | Siemens Aktiengesellschaft | Uncoiler - Traction force controlled |
| EP0747143A1 (en) * | 1995-06-08 | 1996-12-11 | Sollac S.A. | Process and equipment for cold-rolling with compensation of the circularity error of the rolls |
| GB2357860A (en) * | 1999-12-27 | 2001-07-04 | Telepro Inc | A control system for a rolling mill |
| CN1308094C (en) * | 2001-03-03 | 2007-04-04 | Sms迪马格股份公司 | Method for specifically adjusting surface structure of rolling stock during rolling in skin pass mills |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4430550A1 (en) * | 1994-08-27 | 1996-02-29 | Licentia Gmbh | Method for controlling web speeds in a device for transporting or stretching a web of material |
| CN104858242B (en) * | 2015-04-07 | 2017-11-28 | 江苏永钢集团有限公司 | A kind of negative deviation of steel bar with rib monitoring system and minus deviation detect computational methods |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125004A (en) * | 1977-07-12 | 1978-11-14 | Amtel, Inc. | Rolling mill gauge control system |
| GB2044492A (en) * | 1979-02-23 | 1980-10-15 | Hitachi Ltd | Gauge and tension control system for dandem rolling mill |
| US4244025A (en) * | 1979-03-20 | 1981-01-06 | Alshuk Thomas J | Rolling mill gauge control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3121354A (en) * | 1961-04-07 | 1964-02-18 | Allegheny Ludlum Steel | Automatic control system for rolling mills and adjustable dies |
| FR1367882A (en) * | 1962-09-05 | 1964-07-24 | Siemens Ag | Device for adjusting the thickness of the strip in rolling mills |
| FR2403839A1 (en) * | 1977-09-26 | 1979-04-20 | Secim | PROCEDURE FOR REGULATING THE THICKNESS OF A FLAT PRODUCT DURING LAMINATION AND CORRESPONDING INSTALLATION |
-
1984
- 1984-11-05 DD DD26911084A patent/DD229945A1/en unknown
-
1985
- 1985-10-15 DE DE19853536666 patent/DE3536666A1/en not_active Withdrawn
- 1985-11-01 GB GB08527001A patent/GB2166569B/en not_active Expired
- 1985-11-04 CH CH473285A patent/CH669054A5/en not_active IP Right Cessation
- 1985-11-05 FR FR8516363A patent/FR2572663A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125004A (en) * | 1977-07-12 | 1978-11-14 | Amtel, Inc. | Rolling mill gauge control system |
| GB2044492A (en) * | 1979-02-23 | 1980-10-15 | Hitachi Ltd | Gauge and tension control system for dandem rolling mill |
| US4244025A (en) * | 1979-03-20 | 1981-01-06 | Alshuk Thomas J | Rolling mill gauge control system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477422A1 (en) * | 1990-09-28 | 1992-04-01 | Siemens Aktiengesellschaft | Uncoiler - Traction force controlled |
| EP0747143A1 (en) * | 1995-06-08 | 1996-12-11 | Sollac S.A. | Process and equipment for cold-rolling with compensation of the circularity error of the rolls |
| FR2735046A1 (en) * | 1995-06-08 | 1996-12-13 | Lorraine Laminage | COLD ROLLING PROCESS WITH ROLLING CYLINDERS OVALIZATION COMPENSATION. |
| US5799526A (en) * | 1995-06-08 | 1998-09-01 | Clecim | Process and plant for cold rolling with compensation for ovalization of the rolling rolls |
| GB2357860A (en) * | 1999-12-27 | 2001-07-04 | Telepro Inc | A control system for a rolling mill |
| GB2357860B (en) * | 1999-12-27 | 2004-03-24 | Telepro Inc | Periodic gauge deviation compensation system |
| CN1308094C (en) * | 2001-03-03 | 2007-04-04 | Sms迪马格股份公司 | Method for specifically adjusting surface structure of rolling stock during rolling in skin pass mills |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8527001D0 (en) | 1985-12-04 |
| DE3536666A1 (en) | 1986-07-03 |
| GB2166569B (en) | 1989-02-01 |
| CH669054A5 (en) | 1989-02-15 |
| DD229945A1 (en) | 1985-11-20 |
| FR2572663A1 (en) | 1986-05-09 |
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