EP0329999B1 - Method and device for controlling the thickness of webs and flanges in universal rolling mill stands - Google Patents

Method and device for controlling the thickness of webs and flanges in universal rolling mill stands Download PDF

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Publication number
EP0329999B1
EP0329999B1 EP89101913A EP89101913A EP0329999B1 EP 0329999 B1 EP0329999 B1 EP 0329999B1 EP 89101913 A EP89101913 A EP 89101913A EP 89101913 A EP89101913 A EP 89101913A EP 0329999 B1 EP0329999 B1 EP 0329999B1
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EP
European Patent Office
Prior art keywords
gauge
meter
loops
coupling
compensation
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.)
Expired - Lifetime
Application number
EP89101913A
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German (de)
French (fr)
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EP0329999A2 (en
EP0329999A3 (en
Inventor
Wolfgang Dr. Rohde
Dieter Rosenthal
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SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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Publication of EP0329999A2 publication Critical patent/EP0329999A2/en
Publication of EP0329999A3 publication Critical patent/EP0329999A3/en
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Classifications

    • 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
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • 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
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B2013/106—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for sections, e.g. beams, rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/36—Spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Definitions

  • DE-A-27 48 033 has already proposed to replace the mechanical positions with hydraulic positions and to assign gage meter circuits to the hydraulic positions for short-term error correction.
  • a joint coupling of the two vertical roller gage meter circles with the two horizontal roller gage meter circles is already described here.
  • long-term errors cannot be corrected with the universal scaffold according to DE-A-27 48 033.
  • a coupling that is effective within certain tolerance ranges for the optimal removal of web and flange thicknesses is also not possible.
  • the invention has for its object to show a method by means of which web and flange thickness errors can be optimally compensated and to develop a device for carrying out the method.
  • the use of hydraulic adjustments enables precise, quick positioning, and it is also easy to implement overpressure protection.
  • the coupling of the gage meter circles ensures that the ratio of web length to flange length remains within the tolerance range and can be varied within this tolerance range.
  • the extent to which errors can be corrected on the web or flange should affect the flange or web via the selectable dimension of the coupling. This ensures that no secondary errors can occur. Secondary errors should be understood here that e.g. an error correction on the web with a hundred percent coupling would also cause a change in the flange setting, although the flanges may be exactly true to size. In this case, changing the flange setting would result in a secondary error.
  • the attenuators in the respective gage meter circle allow the penetration to be set, i.e. the degree of error compensation in the corresponding gage meter circle. For example, It makes perfect sense to only compensate for fifty percent of the errors, however, thereby remaining within the tolerance range of the web-flange-elongation ratio and maintaining a dimensionally accurate profile.
  • the invention is described below with reference to a drawing.
  • the drawing shows a universal scaffold 1 and a control arrangement for the universal scaffold 1 shown as a block diagram.
  • the universal stand has horizontal rollers 2 and 3 and vertical rollers 4 and 5.
  • the horizontal roller 2 and the vertical rollers 4 and 5 can be adjusted hydraulically, while the horizontal roller 3 can only be supported mechanically by means of packages of documents (not shown).
  • This embodiment was chosen to simplify the circuit diagram. Otherwise, two position control loops with corresponding synchronization, two gage meter circles, corresponding coupling circuits etc. would have to be provided for the horizontal roller 3 as well as for the horizontal roller 2.
  • a position control circuit 6, 6 ', 6' ', 6' '' is assigned to each positioning cylinder.
  • the position control circuits 6, 6 ', 6' ', 6' '' consist of a position sensor 7, 7 ', 7' ', 7' '' and a position comparator 8, 8 ', 8' ', 8 '' 'in which the measured position is compared with a position specified by a position setpoint generator 31, 31', 31 '', 31 ''' '.
  • the output variable of the position comparator 8, 8 ', 8' ', 8' ' is used to control a valve 9, 9 ', 9' ', 9' '' by means of which the hydraulic piston-cylinder units are acted upon Employment.
  • the position transducers 7 ', 7' ' are assigned a synchronization circuit 10 which compensates for differences between the determined position values in order to ensure an exact adjustment of the upper horizontal roller 2.
  • a gage meter circuit 11, 11 ', 11'',11''' is also assigned to the hydraulically adjustable rollers 2, 4, 5.
  • Each gage meter circuit 11, 11 ', 11'',11''' has a device to determine the rolling force, here an actual pressure sensor 12, 12 ', 12'',12''', an adder 13, 13 ', 13'',13'', a reference rolling force memory 14, 14 ', 14 '', 14 ''', a multiplier 15, 15', 15 '', 15 ''', a scaffold module memory 16, 16', 16 '', 16 ''', an attenuator 17, 17', 17 '', 17 ''', an adder 18, 18', 18 '', 18 ''', a reference roller position memory 19, 19', 19 '', 19 ''', a position comparator 32, 32' , 32 '', 32 ''and an adder 20, 20', 20 '', 20 '
  • the coupling circuits 21, 21 ', 21'',21'' have memory coupling circuits 22, 23, 24, 25, 26, 27, in which material-dependent, rolling technology relationships are stored, which determine the degree of coupling of the gage meters -Circles 11 to 11 '''are able to influence.
  • the effect of the gage meter circles 11 to 11 '' ' is described below.
  • the current rolling force of the corresponding roller is measured via the pressure actual value transmitter 12 to 12 '' '.
  • the signals of the pressure actual value transmitter 12 to 12' '' are added to a reference force signal from the memory 14 to 14 '' '.
  • the reference force signal can be stored in the memory by manual entry or by force measurement and storage during roll tapping.
  • a comparison signal formed from the reference position signal and the current position signal and any manually enterable correction signals are added to the output signal of the attenuator 17 to 17' ''.
  • the reference position signal can be stored in the memory 19 to 19 '' 'via direct input or via the position detection and storage during the roll tapping.
  • the output signals of the adder 18 to 18 ′′ ′′ are applied to the respective position comparator 8 to 8 ′′ ′′ via the adder 20 to 20 ′′ ′′ and here, as described above, converted into setting signals.
  • the coupling circuit 20 to 20 "" consists of a memory 28 to 28 “” and an adder 29 to 29 "".
  • the memory 28 to 28 ''' is switchable in such a way that it constantly switches the output signals from the adder 18 to 18''' to the adder 29 to 29 '''', where these output signals are subtracted from themselves, so that at the output of the Adders 29 to 29 '''' 0 'is present, and there is no mutual interference between the gage meter circles 11 to 11'''.
  • the memory 28 to 28 ''' can also be stopped so that from this point on, the current output signals of the adder 18 to 18 '''are subtracted from the stored signal.
  • Corresponding material-dependent coupling of the gage meter circuits 11 to 11 ''' will take place via the memory coupling circuits 22 to 27.
  • a measuring circuit 30 to 30 ''' is provided for long-term error detection, which detects the actual thickness of flanges and web and compares it with the target values.
  • the output signals of the measuring circuit 30 to 30 ''' are also applied to the respective position control loop and serve to correct the adjustment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)

Abstract

When rolling I-section beams, control should be exercised over the thickness of webs and flanges. For this purpose, it is proposed to allocate to each roll of the universal rolling mill stand a gauge-meter circuit. In order to maintain a certain ratio of web elongation to flange elongation, it is furthermore proposed to couple the gauge-meter circuits together in an adjustable manner. Adjustment should be carried out as a function of the rolling program.

Description

Die Erfindung betrifft gemäß Oberbegriff von Patentanspruch 1 ein Verfahren zur Steg- und Flanschendickenregelung von Trägerprofilen in Universalgerüsten mit den Horizontal- und Vertikalwalzen zugeordneten Gage-Meter-Kreisen sowie gemäß Oberbegriff der Patentansprüche 2 und 3 Vorrichtung en zur Durchführung dieses Verfahrens.The invention relates according to the preamble of claim 1, a method for web and flange thickness control of support profiles in universal stands with the horizontal and vertical rollers associated gage meter circles and according to the preamble of claims 2 and 3 devices en for performing this method.

Bei der Walzung von Profilen, bspw. I-Profilen hat es sich gezeigt, daß Stegdicken- und/oder Flanschdickenfehler auftreten. Bei diesen Fehlern kann es sich um Langzeitfehler, die z.B. durch den kontinuierlichen Walzenverschleiß oder durch Temperaturdehnungen der Walzen entstehen können oder aber um Kurzzeitfehler handeln, die z.B. durch Temperaturschwankungen oder durch Materialunterschiede im zu walzenden Profil hervorgerufen werden können.When rolling profiles, for example I-profiles, it has been shown that web thickness and / or flange thickness errors occur. These errors can be long-term errors, e.g. can occur due to the continuous wear of the rollers or due to thermal expansion of the rollers, or they are short-term errors that e.g. can be caused by temperature fluctuations or material differences in the profile to be rolled.

Bisher wurde versucht, derartige Fehler durch positionsgeregelte mechanische Anstellungen auszuräumen. Große Fortschritte konnten auf diese Art jedoch nicht erreicht werden, da derartige mechanische Anstellungen sehr langsam und ungenau arbeiten, so daß Kurzzeitfehlern kaum entgegengewirkt werden konnte. Hinzu kommt, daß bei der Walzung von I-Profilen die Längung des Steges gegenüber der Längung der Flansche um 2 bis 4 % größer sein soll. Durch die oben genannten Regelungen war es bisher leicht möglich, daß die Längungsunterschiede kleiner bzw. größer ausfielen und so der Toleranzbereich verlassen wurde, wodurch Instabilitäten der Profile entstanden.So far, attempts have been made to eliminate such errors by position-controlled mechanical adjustments. However, great progress could not be made in this way, since such mechanical adjustments work very slowly and imprecisely, so that short-term errors could hardly be counteracted. In addition, when rolling I-profiles the elongation of the web should be 2 to 4% greater than the elongation of the flanges. The above-mentioned regulations have so far made it possible for the elongation differences to be smaller or larger and thus to leave the tolerance range, causing instabilities in the profiles.

Es wurde weiterhin versucht, die vom Bandwalzen her bekannten Gage-Meter-Regelungen in Universalgerüsten einzusetzen. Auch hier wurden mechanische Anstellungen benutzt, so daß die erkannten Fehler nicht schnell genug beseitigt werden konnten. Auch hier traten Fehler durch unterschiedliche Längung von Steg und Flanschen auf.Attempts were also made to use the gage meter controls known from strip rolling in universal stands. Mechanical adjustments were also used here so that the detected errors could not be eliminated quickly enough. Here too, errors occurred due to the different lengthening of the web and the flanges.

Es wurde durch die DE-A-27 48 033 aber auch schon vorgeschlagen, die mechanischen Anstellungen durch hydraulische Anstellungen zu ersetzen und den hydraulischen Anstellungen Gage-Meter-Kreise für die Kurzzeitfehler-Korrektur zuzuordnen. Um konstante Verhältnisse der Flansch-Dicke zur Steg-Dicke zu erreichen, wird hier schon eine gemeinsame Kopplung der beiden Vertikalwalzen-Gage-Meter-Kreise mit den beiden Horizontalwalzen-Gage-Meter-Kreisen beschrieben. Langzeitfehler können mit dem Universalgerüst nach der DE-A-27 48 033 jedoch nicht korrigiert werden. Eine in gewissen Toleranzbereichen wirksame Kopplung zur optimalen Steg- und Flanschdickenfehlerbeseitigung ist ebenfalls nicht möglich.However, DE-A-27 48 033 has already proposed to replace the mechanical positions with hydraulic positions and to assign gage meter circuits to the hydraulic positions for short-term error correction. In order to achieve constant ratios of the flange thickness to the web thickness, a joint coupling of the two vertical roller gage meter circles with the two horizontal roller gage meter circles is already described here. However, long-term errors cannot be corrected with the universal scaffold according to DE-A-27 48 033. A coupling that is effective within certain tolerance ranges for the optimal removal of web and flange thicknesses is also not possible.

Der Erfindung liegt die Aufgabe zugrunde ein Verfahren aufzuzeigen, mittels dessen Steg- und Flanschdickenfehler optimal kompensiert werden können sowie eine Vorrichtung zur Durchführung des Verfahrens zu entwickeln.The invention has for its object to show a method by means of which web and flange thickness errors can be optimally compensated and to develop a device for carrying out the method.

Diese Aufgabe wird verfahrensmäßig durch die Merkmale des Anspruchs 1 und vorrichtungsmäßig durch die Merkmale der Ansprüche 2 und 3 gelöst.This object is achieved procedurally by the features of claim 1 and device-wise by the features of claims 2 and 3.

Die Benutzung von hydraulischen Anstellungen macht eine genaue , schnelle Positionierung möglich, zudem läßt sich eine Überdruckssicherung leicht realisieren. Durch die Kopplung der Gage-Meter-Kreise wird erreicht, daß das Verhältnis von Steglängung zu Flanschenlängung im Toleranzbereich bleibt und in diesem Toleranzbereich variiert werden kann. Über das wählbare Maß der Kopplung kann eingestellt werden, inwieweit Fehlerkorrekturen am Steg bzw. am Flansch auf den Flansch bzw. auf den Steg durchschlagen sollen. Dadurch wird gewährleistet, daß keine Sekundärfehler entstehen können. Als Sekundärfehler soll hier verstanden werden, daß z.B. eine Fehlerkorrektur am Steg bei hundertprozentiger Kopplung auch eine Veränderung der Flanschenanstellung bewirken würde, obwohl die Flansche eventuell genau maßhaltig sind. Die Veränderung der Flanschenanstellung würde in diesem Falle einen Sekundärfehler mit sich bringen.The use of hydraulic adjustments enables precise, quick positioning, and it is also easy to implement overpressure protection. The coupling of the gage meter circles ensures that the ratio of web length to flange length remains within the tolerance range and can be varied within this tolerance range. The extent to which errors can be corrected on the web or flange should affect the flange or web via the selectable dimension of the coupling. This ensures that no secondary errors can occur. Secondary errors should be understood here that e.g. an error correction on the web with a hundred percent coupling would also cause a change in the flange setting, although the flanges may be exactly true to size. In this case, changing the flange setting would result in a secondary error.

Die Dämpfungsglieder im jeweiligen Gage-Meter-Kreis erlauben die Einstellung des Durchgriffs, d.h. des Grades der Fehlerkompensation im entsprechenden Gage-Meter-Kreis. Es kann z.B. durchaus sinnvoll sein, die Fehler nur zu fünfzig Prozent zu kompensieren, dadurch jedoch im Toleranzbereich des Steg-Flansch-Längungsverhältnisses zu bleiben und ein maßhaltiges Profil zu erhalten.The attenuators in the respective gage meter circle allow the penetration to be set, i.e. the degree of error compensation in the corresponding gage meter circle. For example, It makes perfect sense to only compensate for fifty percent of the errors, however, thereby remaining within the tolerance range of the web-flange-elongation ratio and maintaining a dimensionally accurate profile.

Die Erfindung wird nachfolgend anhand einer Zeichnung näher beschrieben. Die Zeichnung zeigt ein Universalgerüst 1 sowie als Blockschaltbild dargestellt eine Regelanordnung für das Universalgerüst 1.The invention is described below with reference to a drawing. The drawing shows a universal scaffold 1 and a control arrangement for the universal scaffold 1 shown as a block diagram.

Das Universalgerüst weist horizontale Walzen 2 und 3 sowie vertikale Walzen 4 und 5 auf. Die horizontale Walze 2 sowie die vertikalen Walzen 4 und 5 sind hydraulisch anstellbar, während die horizontale Walze 3 lediglich über nicht gezeigte Unterlagen-Pakete abgestützt, mechanisch anstellbar ist. Diese Ausführungsform wurde gewählt, um das Schaltbild zu vereinfachen. Ansonsten müßte für die Horizontalwalze 3 ebenso wie für die Horizontalwalze 2 zwei Positionsregelkreise mit entsprechenden Synchronisation, zwei Gage-Meter-Kreise, entsprechende Koppelschaltungen usw. vorgesehen werden.The universal stand has horizontal rollers 2 and 3 and vertical rollers 4 and 5. The horizontal roller 2 and the vertical rollers 4 and 5 can be adjusted hydraulically, while the horizontal roller 3 can only be supported mechanically by means of packages of documents (not shown). This embodiment was chosen to simplify the circuit diagram. Otherwise, two position control loops with corresponding synchronization, two gage meter circles, corresponding coupling circuits etc. would have to be provided for the horizontal roller 3 as well as for the horizontal roller 2.

Jedem Anstellzylinder ist ein Positions-Regelkreis 6, 6', 6'', 6''' zugeordnet. Für die Verikaltwalzen 4, 5 ist um die Zeichnung zu vereinfachen jeweils nur ein Anstellzylinder vorgesehen, während die obere Horizontalwalze je einen Anstellzylinder pro Walzenzapfen besitzt. Die Positions-Regelkreise 6, 6', 6'', 6''' bestehen aus einem Positions-Aufnehmer 7, 7', 7'', 7''' und einem Positions-Vergleicher 8, 8', 8'', 8''' in dem die gemessene Position mit einer, durch einen Positionssollwertgeber 31, 31', 31'', 31'''vorgegebenen Position verglichen wird. Die Ausgangsgröße des Positions-Vergleichers 8, 8', 8'', 8''' dient zur Steuerung eines Ventils 9, 9', 9'', 9''' über das die Beaufschlagung der betreffenden Kolben-Zylinder-Einheiten der hydraulischen Anstellung erfolgt. Den Positions-Aufnehmern 7', 7'' ist eine Synchronisationsschaltung 10 zugeordnet, die Differenzen zwischen den ermittelten Positionswerten ausgleicht, um eine exakte Anstellung der oberen Horizontalwalze 2 zu gewährleisten.A position control circuit 6, 6 ', 6' ', 6' '' is assigned to each positioning cylinder. For the vertical rollers 4, 5 only one positioning cylinder is provided to simplify the drawing, while the upper horizontal roller has one positioning cylinder per roll neck. The position control circuits 6, 6 ', 6' ', 6' '' consist of a position sensor 7, 7 ', 7' ', 7' '' and a position comparator 8, 8 ', 8' ', 8 '' 'in which the measured position is compared with a position specified by a position setpoint generator 31, 31', 31 '', 31 '' '. The output variable of the position comparator 8, 8 ', 8' ', 8' '' is used to control a valve 9, 9 ', 9' ', 9' '' by means of which the hydraulic piston-cylinder units are acted upon Employment. The position transducers 7 ', 7' 'are assigned a synchronization circuit 10 which compensates for differences between the determined position values in order to ensure an exact adjustment of the upper horizontal roller 2.

Den hydraulisch anstellbaren Walzen 2, 4, 5 ist weiterhin je ein Gage-Meter-Kreis 11, 11', 11'', 11''' zugeordnet. Jeder Gage-Meter-Kreis 11, 11', 11'', 11''' weist eine Vorrichtung zur Ermittlung der Walzkraft, hier einen Druckistwertgeber 12, 12', 12'', 12''', einen Addierer 13, 13', 13'', 13''', einen Referenz-Walzkraft-Speicher 14, 14', 14'', 14''', einen Multiplizierer 15, 15', 15'', 15''', einen Gerüstmodul-Speicher 16, 16', 16'', 16''', ein Dämpfungsglied 17, 17', 17'', 17''', einen Addierer 18, 18', 18'', 18''', einen Referenz-Walzenpositions-Speicher 19, 19', 19'', 19''', einen Positionsvergleicher 32, 32', 32'', 32''' sowie einen Addierer 20, 20', 20'', 20''' auf. Über die Addierer 20, 20', 20'', 20''' und Koppelschaltungen 21, 21', 21'', 21''' sind die Gage-Meter-Kreise 11, 11', 11'', 11''' untereinander verbunden. Die Kopplungsschaltungen 21, 21', 21'', 21''' weisen Speicher-Koppelkreise 22, 23, 24, 25, 26, 27 auf, in denen materialabhängige, walztechnische Zusammenhänge gespeichert sind, die den Grad der Kopplung der Gage-Meter-Kreise 11 bis 11''' zu beeinflussen vermögen.A gage meter circuit 11, 11 ', 11'',11''' is also assigned to the hydraulically adjustable rollers 2, 4, 5. Each gage meter circuit 11, 11 ', 11'',11''' has a device to determine the rolling force, here an actual pressure sensor 12, 12 ', 12'',12''', an adder 13, 13 ', 13'',13''', a reference rolling force memory 14, 14 ', 14 '', 14 ''', a multiplier 15, 15', 15 '', 15 ''', a scaffold module memory 16, 16', 16 '', 16 ''', an attenuator 17, 17', 17 '', 17 ''', an adder 18, 18', 18 '', 18 ''', a reference roller position memory 19, 19', 19 '', 19 ''', a position comparator 32, 32' , 32 '', 32 '''and an adder 20, 20', 20 '', 20 '''. Via the adders 20, 20 ', 20'',20''' and coupling circuits 21, 21 ', 21'',21''', the gage meter circuits 11, 11 ', 11'',11'''interconnected. The coupling circuits 21, 21 ', 21'',21''' have memory coupling circuits 22, 23, 24, 25, 26, 27, in which material-dependent, rolling technology relationships are stored, which determine the degree of coupling of the gage meters -Circles 11 to 11 '''are able to influence.

Die Wirkung der Gage-Meter-Kreise 11 bis 11''' wird im folgenden beschrieben. Über den Druckistwertgeber 12 bis 12''' wird die aktuelle Walzkraft der entsprechenden Walze gemessen. Im Addierer 13 bis 13''' wird das Signale des Druckistwertgebers 12 bis 12''' mit einem Referenz-Kraft-Signal aus dem Speicher 14 bis 14''' addiert. Das Referenz-Kraft-Signal kann durch manuelle Eingabe in den Speicher bzw. durch die Kraftmessung und Speicherung beim Walzanstich im Speicher abgelegt werden.The effect of the gage meter circles 11 to 11 '' 'is described below. The current rolling force of the corresponding roller is measured via the pressure actual value transmitter 12 to 12 '' '. In the adder 13 to 13 '' ', the signals of the pressure actual value transmitter 12 to 12' '' are added to a reference force signal from the memory 14 to 14 '' '. The reference force signal can be stored in the memory by manual entry or by force measurement and storage during roll tapping.

Das Ausgangssignal des Addierers 13 bis 13''' wird im Multiplizierer 15 bis 15''' durch einen vom Walzprogramm abhängigen, im Speicher 16 bis 16''' abgelegten Gerüstmodul dividiert und anschließend dem Dämpfungsglied 17 bis 17''' aufgeschaltet. Über das Dämpfungsglied 17 bis 17''' ist der Durchgriff jedes Gage-Meter-Kreises 11 bis 11''' einstellbar. Die Einstellung kann hier manuell oder über einen nicht gezeigten Speicher, in dem walzprogramm-spezifische Durchgriffswerte abgespeichert sind, erfolgen.The output signal of the adder 13 to 13 '''is divided in the multiplier 15 to 15''' by a stand module dependent on the rolling program and stored in the memory 16 to 16 '''and then applied to the attenuator 17 to 17'''. The penetration of each gage meter circuit 11 to 11 '''is adjustable via the attenuator 17 to 17'''. The setting can be made here manually or via a memory, not shown, in which penetration values specific to the rolling program are stored.

Im Addierer 18 bis 18''' werden zum Ausgangssignal des Dämpfungsgliedes 17 bis 17''' ein aus dem Referenz-Positionssignal und dem aktuellen Positionssignal gebildeten Vergleichssignal sowie eventuell manuell eingebbare Korrektursignale addiert. Das Referenz-Psoitionssignal kann über direkte Eingabe bzw. über die Positionserfassung und -speicherung während des Walzanstichs in den Speicher 19 bis 19''' abgelegt werden. Das Ausgangssignale des Addierers 18 bis 18''' wird über den Addierer 20 bis 20''' dem jeweiligen Positionsvergleicher 8 bis 8''' aufgeschaltet und hier, wie oben beschrieben, in Anstellsignale umgewandelt.In the adder 18 to 18 '' ', a comparison signal formed from the reference position signal and the current position signal and any manually enterable correction signals are added to the output signal of the attenuator 17 to 17' ''. The reference position signal can be stored in the memory 19 to 19 '' 'via direct input or via the position detection and storage during the roll tapping. The output signals of the adder 18 to 18 ″ ″ are applied to the respective position comparator 8 to 8 ″ ″ via the adder 20 to 20 ″ ″ and here, as described above, converted into setting signals.

Das Ausgangssignal des Addierers 18 wird gleichzeitig über die Koppelschaltung 21 auf die Addierer 20', 20'', 20''' geschaltet, während das Ausgangssignal des Addierers 18', 18''über die Koppelschaltung 21', 21'' den Addierern 20, 20''' und das Ausgangssignale des Addierers 18''' über die Koppelschaltung 21''' den Addierern 20, 20', 20'' aufgeschaltet wird. Dadurch ist eine gegenseitige, variable Beeinflussung der Gage-Meter-Kreise 11 bis 11''' möglich.The output signal of the adder 18 is simultaneously connected to the adders 20 ′, 20 ″, 20 ″ ″ via the coupling circuit 21, while the output signal of the adder 18 ′, 18 ″ via the coupling circuit 21 ′, 21 ″ to the adders 20 , 20 '' 'and the output signals of the adder 18' '' via the coupling circuit 21 '' 'to the adders 20, 20', 20 ''. This enables mutual, variable influencing of the gage meter circles 11 to 11 '' '.

Die Kopplungsschaltung 20 bis 20''' besteht aus einem Speicher 28 bis 28''' und einem Addierer 29 bis 29'''. Der Speicher 28 bis 28''' ist derart schaltbar, daß er ständig die Ausgangssignale vom Addierer 18 bis 18''' auf den Addierer 29 bis 29''' schaltet, wo diese Ausgangssignale von sich selbst subtrahiert werden, so das am Ausgang des Addierers 29 bis 29''' "0" ansteht, und keine gegenseitige Beeinflussung der Gage-Meter-Kreise 11 bis 11''' erfolgt. Der Speicher 28 bis 28''' kann jedoch auch gestoppt werden, so daß von diesem Zeitpunkt an von dem gespeicherten Signal die aktuellen Ausgangssignale des Addierers 18 bis 18''' subtrahiert werden. Über die Speicher-Koppelkreise 22 bis 27 wird eine entsprechende materialabhängige Koppelung der Gage-Meter-Kreise 11 bis 11''' erfolgen.The coupling circuit 20 to 20 "" consists of a memory 28 to 28 "" and an adder 29 to 29 "". The memory 28 to 28 '''is switchable in such a way that it constantly switches the output signals from the adder 18 to 18''' to the adder 29 to 29 '''', where these output signals are subtracted from themselves, so that at the output of the Adders 29 to 29 '''' 0 'is present, and there is no mutual interference between the gage meter circles 11 to 11'''. However, the memory 28 to 28 '''can also be stopped so that from this point on, the current output signals of the adder 18 to 18 '''are subtracted from the stored signal. Corresponding material-dependent coupling of the gage meter circuits 11 to 11 '''will take place via the memory coupling circuits 22 to 27.

Zur Langzeitfehlererfassung ist ein Meßkreis 30 bis 30''' vorgesehen, der die tatsächliche Dicke von Flanschen und Steg erfaßt und mit den Sollwerten vergleicht. Die Ausgangssignale des Meßkreises 30 bis 30''' werden ebenfalls dem jeweiligen Positions-Regelkreis aufgeschaltet und dienen zur Korrektur der Anstellung.A measuring circuit 30 to 30 '''is provided for long-term error detection, which detects the actual thickness of flanges and web and compares it with the target values. The output signals of the measuring circuit 30 to 30 '''are also applied to the respective position control loop and serve to correct the adjustment.

BezugszeichenübersichtReference symbol overview

11
UniversalgerüstUniversal scaffold
22nd
HorizontalwalzeHorizontal roller
33rd
HorizontalwalzeHorizontal roller
44th
VertikalwalzeVertical roller
55
VertiikalwalzeVertical roller
66
Positions-RegelkreisPosition control loop
77
PositionsaufnehmerPosition sensor
88th
PositionsvergleicherPosition comparator
99
VentilValve
1010th
SychronisationsschaltungSynchronization circuit
1111
Gage-Meter-KreisGage meter circle
1212th
DruckistwertgeberPressure actual value transmitter
1313
AddiererAdder
1414
Speicher (Referenz-Walzkraft)Memory (reference rolling force)
1515
MultipliziererMultiplier
1616
Speicher (Gerüstmodul)Memory (scaffolding module)
1717th
DämpfungsgliedAttenuator
1818th
AddiererAdder
1919th
Speicher (Referenz-Walzposition)Memory (reference rolling position)
2020th
AddiererAdder
2121
KopplungsschaltungCoupling circuit
22 - 2722-27
Speicher-KoppelkreiseMemory coupling circuits
2828
SpeicherStorage
2929
Addierer,Adder,
3030th
MeßkreisMeasuring circuit
3131
PositionssollwertgeberPosition setpoint device
3232
PositionsvergleicherPosition comparator

Claims (3)

  1. Method for the regulation of the thickness of webs and flanges of girder sections in a universal stand (1) with hydraulic adjustments, which are associated with each horizontal as well as vertical roll (2, 3, 4, 5), for the positioning of the rolls to positions presettable for them, with gauge-meter loops (11, 11', 11'', 11''') for the compensation for short term errors by measurement of the rolling forces by means of actual pressure value transmitters (12, 12', 12'', 12''') associated with the hydraulic screw-down cylinders and delivery of target additional values resulting from force deviations between a reference force and the measured rolling force as well as with a coupling of the gauge-meter loops, which are associated with both the vertical rolls, with both the gauge-meter loops of the horizontal rolls, characterised by positional regulations for each roll (2, 3, 4, 5) by position-regulating loops (6, 6', 6'', 6'''), the input of the target additional values into the respective position-regulating loop (6, 6', 6'', 6''') as first correcting magnitude, the detection of and compensation for long term errors by sensors and/or setting members ascertaining and/or presetting these and/or by computed models dependent on the rolling program and their input into the respective position-regulating loop (6, 6', 6'', 6''') as second correcting magnitude, the presetting of the degree of the compensation for short term errors which is to be performed (intensity), the selectably variable coupling of the gauge-meter loops (11, 11', 11'', 11''') one among the other for the desired mutual influencing of the compensation for short term errors and the presetting of the onset of the coupling of the gauge-meter loops (11, 11', 11'', 11''') one among the other for the entire or partial compensation for secondary short term errors which arise during a regulation process, wherein relationships, which are dependent on the material and a matter of rolling technology, can be called up from storage coupling switch loops (22 to 27) for the coupling of the gauge-meter loops (11, 11', 11'', 11''') one among the other.
  2. Universal stand for the performance of the method according to claim 1, with hydraulic screw-down devices which are adjustable in their position and associated with each horizontal and vertical roll (2, 3, 4, 5), with gauge-meter loops (11, 11', 11'', 11''') for the compensation for short term errors by measurement of the rolling forces by means of actual pressure value transmitters (12, 12', 12'', 12''') associated with the hydraulic screw-down cylinders and delivery of target additional values resulting from force deviations between a reference force and the measured rolling force into the control devices as well as with coupling circuits (21, 21', 21'', 21''') for the coupling of the gauge-meter loops (11, 11'''), which are associated with the vertical rolls (4, 5), with both the gauge-meter loops (11', 11'') of the horizontal rolls (2, 3), characterised thereby, that each roll (2, 3, 4, 5) is associated with at least one position-regulating loop (6, 6', 6'', 6''') for the hydraulic screw-down cylinders, that the gauge-meter loops associated with each roll (2, 3, 4, 5) are superimposed on the corresponding position-regulating loops (6, 6', 6'', 6'''), that at least one measuring circuit (30, 30', 30'', 30''') is provided for the detection of and compensation for long term errors, the output magnitudes of which circuit likewise act on the position-regulating loop (6, 6', 6'', 6'''), that each gauge-meter loop (11, 11', 11'', 11''') displays a damping member (17, 17', 17'', 17''') for the adjustment of the intensity, that coupling circuits (21, 21', 21'', 21'''), which allow a variable mutual influencing of the gauge-meter loops (11, 11', 11'', 11'''), are provided between the individual gauge-meter loops (11, 11', 11'', 11''') and that the degree of the coupling as well as the instant of the onset of the coupling are presettable in order optimally to compensate for secondary short term errors.
  3. Universal stand according to the classifying clause of the claim 2, characterised thereby, that a respective position-regulating loop for the hydraulic screw-down cylinders is associated with the horizontal roll pairs (2, 3) and with the vertical roll pairs (4, 5), a respective gauge-meter loop is associated with the horizontal roll pairs (2, 3) and the vertical roll pairs (4, 5) and superimposed on the respective position-regulating loops, that at least one measuring circuit (30, 30', 30'', 30''') is provided for the detection of and compensation for long term errors, the output magnitudes of which circuit likewise act on the position-regulating loop (6, 6', 6'', 6'''), that each gauge-meter loop (11, 11', 11'', 11''') displays a damping member (17, 17', 17'', 17''') for the adjustment of the intensity, that coupling circuits (21, 21', 21'', 21'''), which allow a variable mutual influencing of the gauge-meter loops (11, 11', 11'', 11'''), are provided between the individual gauge-meter loops (11, 11', 11'', 11''') and that the degree of the coupling as well as the instant of the onset of the coupling are presettable in order optimally to compensate for secondary short term errors.
EP89101913A 1988-02-26 1989-02-03 Method and device for controlling the thickness of webs and flanges in universal rolling mill stands Expired - Lifetime EP0329999B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806063 1988-02-26
DE3806063A DE3806063C2 (en) 1988-02-26 1988-02-26 Method and device for web and flange thickness control in universal scaffolding

Publications (3)

Publication Number Publication Date
EP0329999A2 EP0329999A2 (en) 1989-08-30
EP0329999A3 EP0329999A3 (en) 1991-09-11
EP0329999B1 true EP0329999B1 (en) 1994-08-31

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ID=6348229

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Application Number Title Priority Date Filing Date
EP89101913A Expired - Lifetime EP0329999B1 (en) 1988-02-26 1989-02-03 Method and device for controlling the thickness of webs and flanges in universal rolling mill stands

Country Status (8)

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US (1) US5000020A (en)
EP (1) EP0329999B1 (en)
JP (1) JP2529730B2 (en)
KR (1) KR960006018B1 (en)
CN (1) CN1028843C (en)
AT (1) ATE110599T1 (en)
DE (2) DE3806063C2 (en)
ES (1) ES2060677T3 (en)

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Publication number Priority date Publication date Assignee Title
ES2042136T3 (en) * 1989-05-24 1993-12-01 Sms Schloemann-Siemag Aktiengesellschaft AUTOMATIC ADJUSTMENT OF A UNIVERSAL LAMINATION BOX AFTER ITS MODIFICATION TO A NEW PROFILE FORMAT.
DE4138639C1 (en) * 1991-11-25 1993-02-25 Sundwiger Eisenhuette Maschinenfabrik Gmbh & Co, 5870 Hemer, De
CN1168549C (en) * 1998-04-15 2004-09-29 新日本制铁株式会社 Multifunction rolling mill for H-steel rolling equipment and rolling method using it
ES2234703T3 (en) * 1999-10-17 2005-07-01 KARL FUHR GMBH & CO. KG ADDRESS DEVICE FOR A LAMINATING MECHANISM.
DE10106527A1 (en) * 2001-02-13 2002-08-29 Sms Demag Ag Method for operating a rolling mill and control system for a rolling mill
DE10151248A1 (en) * 2001-10-17 2003-04-30 Sms Meer Gmbh Device for changing the position of the web in shaped steel bottle profiles for rolls in roll stand arrangements
JP4114646B2 (en) * 2004-07-07 2008-07-09 株式会社日立製作所 Rolling control device, rolling control method and rolling device
CN103203372B (en) * 2012-01-11 2015-05-20 宝山钢铁股份有限公司 Control method for eliminating static deviation value of hot continuous rolling mill
KR101371760B1 (en) 2012-12-21 2014-03-07 현대자동차(주) Shock absorber apparatus
CN109848314B (en) * 2019-02-28 2023-11-14 同高先进制造科技（太仓）有限公司 Robot binding and pressing correction device and working method thereof

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DD39581A (en) *
FR2374101A1 (en) * 1976-12-17 1978-07-13 Secim CAGE FOR CONTINUOUS TRAIN FOR LAMINATION OF PROFILES
US4283930A (en) * 1977-12-28 1981-08-18 Aichi Steel Works Limited Roller-dies-processing method and apparatus
JPS5931404B2 (en) * 1979-08-03 1984-08-02 新日本製鐵株式会社 Universal rolling method for rails and similar sections
EP0121148B1 (en) * 1983-03-14 1989-02-15 Sms Schloemann-Siemag Aktiengesellschaft Method of making hot rolled strip with a high quality section and flatness
DE3501622A1 (en) * 1985-01-19 1986-07-24 Mannesmann AG, 4000 Düsseldorf METHOD FOR AUTOMATICALLY SETTING UP THE ROLLS OF A UNIVERSAL ROLLING DEVICE
JPS6213209A (en) * 1985-07-09 1987-01-22 Mitsubishi Electric Corp Elongation control device
JPH0626723B2 (en) * 1986-09-24 1994-04-13 三菱電機株式会社 Plate shape control method
ES2028137T5 (en) * 1987-01-23 1997-05-16 Schloemann Siemag Ag ADJUSTMENT DEVICE FOR A UNIVERSAL ROLLING BOX.

Also Published As

Publication number Publication date
EP0329999A2 (en) 1989-08-30
ES2060677T3 (en) 1994-12-01
DE3806063C2 (en) 1996-10-17
KR960006018B1 (en) 1996-05-08
CN1036716A (en) 1989-11-01
KR890012713A (en) 1989-09-19
US5000020A (en) 1991-03-19
JPH01254306A (en) 1989-10-11
DE58908248D1 (en) 1994-10-06
CN1028843C (en) 1995-06-14
JP2529730B2 (en) 1996-09-04
DE3806063A1 (en) 1989-09-07
ATE110599T1 (en) 1994-09-15
EP0329999A3 (en) 1991-09-11

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