EP1230993A2 - Device for improving the flatness of rolled strip, in particular of steel strip - Google Patents

Device for improving the flatness of rolled strip, in particular of steel strip Download PDF

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Publication number
EP1230993A2
EP1230993A2 EP02000832A EP02000832A EP1230993A2 EP 1230993 A2 EP1230993 A2 EP 1230993A2 EP 02000832 A EP02000832 A EP 02000832A EP 02000832 A EP02000832 A EP 02000832A EP 1230993 A2 EP1230993 A2 EP 1230993A2
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EP
European Patent Office
Prior art keywords
flatness
str
stretching
pmr
measuring roller
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
Application number
EP02000832A
Other languages
German (de)
French (fr)
Other versions
EP1230993B1 (en
EP1230993A3 (en
Inventor
Holger Dr. Behrens
Gernot Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
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Priority claimed from DE2001132105 external-priority patent/DE10132105A1/en
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1230993A2 publication Critical patent/EP1230993A2/en
Publication of EP1230993A3 publication Critical patent/EP1230993A3/en
Application granted granted Critical
Publication of EP1230993B1 publication Critical patent/EP1230993B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product

Definitions

  • the invention relates to a device for improving the flatness of at least a mill-rolled strip, in particular steel strip.
  • the strip is stretched plastically in the stretching judge, for example by bending under tension around bending rollers, or by tension between S-rollers in stretch straighteners without bending cassette. This eliminates the unevenness after rolling of the volume reduced.
  • the size of the applied stretch and the tape Material properties will have a corresponding minimum of flatness after the Receiving stretching lines.
  • the magnitude of the stretch to be applied should be considered be similar to the maximum incoming flatness.
  • the dimensioning of the stretching judge is based on the maximum possible and to be corrected Unevenness.
  • the size of the respective target value of the tape stretch without disadvantage for material quality such as consolidation or surface impairment Determined depending on the situation and should only amount to just a plan Band to yield. Because too much stretching would be especially with rust and acid resistant Steels to impair the surface, e.g. Loss of gloss, to lead.
  • the object of the invention based on the evaluation of the current flatness deviation using a Flatness measuring roller the actually required extension setpoint for the To specify the stretching judge, the measurement of the flatness taking place in real time, in order to use only the minimum required stretch value, and consequently a targeted flatness of the strip with minimal influence on the To achieve surface quality and other material properties.
  • the interaction between the two units is advantageous at a short distance behind the rolling mill the occurrence of residual unevenness of the strip is eliminated from the roll stand, without any impairment the material qualities of the tape.
  • first flatness measuring roller between the roll stand and the stretch leveler, and arranged a second flatness measuring roller after the stretching judge, their flatness actual signals as a controlled variable for correcting the setpoint on the stretching judge, and / or as a control variable for correcting the actuators of the rolling mill these are returned.
  • an evaluation algorithm can be provided, which follows Specification of the signals of the actual flatness of the first and / or second flatness measuring roller a decision is made as to whether influencing the rolling mill actuators and / or the stretching judge is most effective.
  • the Actuators of the rolling mill and the stretching unit a unit for improvement
  • the flatness of belts is that the stretching judge has no cassette system is formed and that the roll stand, the flatness measuring rollers, the S-roller guide as well as the stretching judge using measuring and control units stay in contact.
  • the basic arrangement of the functional members of the roll stand is shown in FIG WW in interaction or in combination with the setpoint of the Flatness, the actuators of the WW mill stand and the flatness signal of the Flatness measuring roller PMR visible.
  • the flatness signal of the measuring roller is with the Setpoint STR compared and the result as a controlled variable together with a Signal from the flatness measuring roller PMR of the stretcher straightener arrangement STR is given, which in turn masters the function of the tension pulleys.
  • Figure 2 shows the family tree of the aforementioned device, supplemented by a second flatness measuring roller PMR 2 after the stretch straightener STR.
  • the actual flatness value determined on the measuring roller is used in an evaluation algorithm then examined whether, depending on the residual flatness determined in the volume Actual signal of the measuring roller PMR 2 in the roll stand WW or in the stretch leveler STR influencing flatness is most effective.
  • Figure 3 shows a schematic representation of the functional principle for improvement flatness by determining the stretching target value at the stretching judge STR when using a flatness measuring roller PMR.
  • the Flatness measuring roller PMR and the stretch straightener STR an S-roller guide SF arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Coating With Molten Metal (AREA)

Abstract

Device for improving the planarity of a steel strip rolled in a roll stand comprises planarity measuring rollers (PMR1, PMR2) and a tension leveling machine (STR) connected to the roll stand (WW). Preferred Features: A first planarity measuring roller is arranged between the roll stand and the tension leveling machine, and a second planarity measuring roller is arranged after the tension leveling machine.

Description

Die Erfindung betrifft eine Vorrichtung zur Verbesserung der Planheit von in wenigstens einem Walzgerüst gewalztem Band, insbesondere von Stahlband.The invention relates to a device for improving the flatness of at least a mill-rolled strip, in particular steel strip.

Falls die geforderten Soll-Werte für die Planheit eines Bandes nach Passieren eines Walzwerks im Abgleich mit den Ist-Meßwerten einer Planheitsmeßrolle nicht übereinstimmen, so wird aus dieser Abweichung eine Stellgröße für die vorgeschalteten Walzgerüste ermittelt bzw. errechnet.If the required target values for the flatness of a strip after passing through one Rolling mill in comparison with the actual measured values of a flatness measuring roll not agree, this deviation becomes a manipulated variable for the upstream Roll stands determined or calculated.

Die Abweichung zur Soll-Planheit wird Null sein, wenn mit den an einem Walzgerüst üblicherweise vorhandenen Stellgliedem die Differenzen zu vorgegebenen Planheitswerten eliminiert worden sind. Dies läßt sich erreichen, wenn die in das Walzgerüst einlaufende Unplanheit durch Wirkung der Stellglieder am Walzgerüst, z.B. durch Kippen, Biegung, Verschiebung der Walzen bzw. durch zonenweises Kühlen hinreichend beeinflußt werden kann.The deviation from the target flatness will be zero if it is on a roll stand Actuators usually present the differences to predetermined Flatness values have been eliminated. This can be achieved if the in the Rolling flatness due to the action of the actuators on the roll stand, e.g. by tilting, bending, shifting the rollers or by zones Cooling can be influenced sufficiently.

Ist jedoch der Einfluß der Stellglieder am Walzgerüst auf die Planheitsverteilung bzw. Unplanheit des Walzbandes begrenzt, z.B. weil

  • nur ein Walzstich möglich ist, oder
  • ein Duo-Gerüst zur Oberflächenverbesserung zum Einsatz kommt, oder
  • Stellglieder fehlen bzw. in ihrer Wirksamkeit eingeschränkt sind
und die einlaufende Unplanheit unbekannt ist bzw. material- bzw. produktionsbedingten Schwankungen unterliegt, kommt bekanntlich zur Erfüllung hoher Anforderungen an die Planheit des Fertigmaterials hinter dem Walzwerk ein Streckrichter zum Einsatz. However, is the influence of the actuators on the roll stand limited on the flatness distribution or non-flatness of the rolled strip, for example because
  • only one roll pass is possible, or
  • a duo scaffold is used to improve the surface, or
  • Actuators are missing or their effectiveness is limited
and the incoming unevenness is unknown or is subject to fluctuations due to material or production, it is known that a stretch leveler is used to meet high demands on the flatness of the finished material behind the rolling mill.

Im Streckrichter erfolgt eine plastische Dehnung des Bandes, bspw. durch Biegung unter Zug um Biegerollen, oder durch Zug zwischen S-Rollen bei Streckrichtern ohne Biegekassette. Dadurch wird die nach dem Walzen vorliegende Unplanheit des Bandes reduziert.The strip is stretched plastically in the stretching judge, for example by bending under tension around bending rollers, or by tension between S-rollers in stretch straighteners without bending cassette. This eliminates the unevenness after rolling of the volume reduced.

Nach Maßgabe der Größe der aufgebrachten Dehnung des Bandes und seiner Materialeigenschaften wird ein entsprechendes Minimum an Unplanheit nach dem Streckrichten erhalten. Dabei sollte die Größenordnung der aufzubringenden Dehnung ähnlich der maximalen einlaufenden Unplanheit sein. Die Dimensionierung des Streckrichters richtet sich nach der maximal möglichen und zu korrigierenden Unplanheit. Die Größe des jeweiligen Soll-Wertes der Bandstreckung ohne Nachteil für Materialqualität wie Verfestigung oder Oberflächenbeeinträchtigung wird situationsbedingt bestimmt und soll nur so viel betragen, um gerade ein planes Band zu ergeben. Denn zuviel Streckung würde vor allem bei rost- und säurebeständigen Stählen zu einer Beeinträchtigung der Oberfläche, z.B. Glanzverlust, führen.According to the size of the applied stretch and the tape Material properties will have a corresponding minimum of flatness after the Receiving stretching lines. The magnitude of the stretch to be applied should be considered be similar to the maximum incoming flatness. The dimensioning of the stretching judge is based on the maximum possible and to be corrected Unevenness. The size of the respective target value of the tape stretch without disadvantage for material quality such as consolidation or surface impairment Determined depending on the situation and should only amount to just a plan Band to yield. Because too much stretching would be especially with rust and acid resistant Steels to impair the surface, e.g. Loss of gloss, to lead.

Um stets hohe Qualitätsanforderungen zu erfüllen, dabei jedoch den materialbedingten Planheitsschwankungen zu entsprechen, werden in der Praxis vielfach Standardeinstellungen mit etwas größeren Dehnungswerten verwendet, die dann die auslaufende Oberflächengüte negativ beeinflussen können.To always meet high quality requirements, but the material-related ones Fluctuations in flatness are common in practice Standard settings with slightly larger strain values are used, which then can have a negative impact on the leaking surface quality.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, durch Auswertung der aktuellen Planheitsabweichung mittels einer Planheitsmeßrolle den tatsächlich erforderlichen Streckungs-Sollwert für den Streckrichter anzugeben, wobei die Messung der Unplanheiten in Echtzeit erfolgt, um damit immer nur den minimal erforderlichen Streckwert zu verwenden, und infolgedessen eine gezielte Planheit des Bandes mit minimaler Beeinflussung der Oberflächengüte und anderer Materialeigenschaften zu erzielen.Starting from the aforementioned prior art, the object of the invention based on the evaluation of the current flatness deviation using a Flatness measuring roller the actually required extension setpoint for the To specify the stretching judge, the measurement of the flatness taking place in real time, in order to use only the minimum required stretch value, and consequently a targeted flatness of the strip with minimal influence on the To achieve surface quality and other material properties.

Die Lösung der Aufgabe gelingt bei einer Vorrichtung der im Oberbegriff von Anspruch 1 genannten Art mit der Erfindung dadurch, dass im Anschluß an ein in Walzrichtung gesehen letztes Walzgerüst wenigstens eine Planheitsmeßrolle und ein Streckrichter angeordnet sind.The problem is solved with a device in the preamble of claim 1 mentioned type with the invention in that following a in Viewed rolling direction last roll stand at least one flatness measuring roller and a stretching judge are arranged.

Mit Vorteil wird durch das dabei erreichte Zusammenwirken von beiden Aggregaten in nur kurzem Abstand hinter dem Walzwerk das Auftreten von Rest-Unplanheiten des Bandes aus dem Walzgerüst eliminiert, und zwar ohne Beeinträchtigung der Materialqualitäten des Bandes.The interaction between the two units is advantageous at a short distance behind the rolling mill the occurrence of residual unevenness of the strip is eliminated from the roll stand, without any impairment the material qualities of the tape.

Weitere Ausgestaltungen der Erfindung sind entsprechend den Merkmalen der Unteransprüche vorgesehen.Further refinements of the invention are in accordance with the features of Subclaims provided.

Danach ist zwischen dem Walzgerüst und dem Streckrichter eine erste Planheitsmeßrolle, und nach dem Streckrichter eine zweite Planheitsmeßrolle angeordnet, deren Planheits-lst-Signale als Regelgröße zur Sollwert-Korrektur auf den Streckrichter, und/oder als Regelgröße zur Korrektur der Stellglieder des Walzwerks auf diese zurückgeführt werden.Then there is a first flatness measuring roller between the roll stand and the stretch leveler, and arranged a second flatness measuring roller after the stretching judge, their flatness actual signals as a controlled variable for correcting the setpoint on the stretching judge, and / or as a control variable for correcting the actuators of the rolling mill these are returned.

In dieser Rückführung kann ein Auswerte-Algorithmus vorgesehen sein, der nach Maßgabe der Signale der Ist-Planheit der ersten und/oder zweiten Planheitsmeßrolle eine Entscheidung trifft, ob eine Beeinflussung der Walzwerks-Stellglieder und/oder des Streckrichters am effektivsten ist.In this feedback an evaluation algorithm can be provided, which follows Specification of the signals of the actual flatness of the first and / or second flatness measuring roller a decision is made as to whether influencing the rolling mill actuators and / or the stretching judge is most effective.

Und schließlich sehen weitere Ausgestaltungen der Vorrichtung vor, dass die Stellglieder des Walzwerks und des Streckrichters eine Einheit zur Verbesserung der Planlage von Bändern sind, dass der Streckrichter ohne Kassettensystem ausgebildet ist und dass das Walzgerüst, die Planheitsmeßrollen, die S-Rollenführung sowie der Streckrichter mittels Meß- und Regeleinheiten regeltechnisch in Verbindung stehen.And finally, further refinements of the device provide that the Actuators of the rolling mill and the stretching unit a unit for improvement The flatness of belts is that the stretching judge has no cassette system is formed and that the roll stand, the flatness measuring rollers, the S-roller guide as well as the stretching judge using measuring and control units stay in contact.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung einiger in den Zeichnungen schematisch dargestellter Ausführungsbeispiele. Es zeigen

Figur 1
ein Prinzip der erfindungsgemäßen Vorrichtung in Form eines Stammbaumes;
Figur 2
den Stammbaum der Vorrichtung gemäß Fig. 1 mit einer Ergänzung durch eine zweite Planheitsmeßrolle und einen Auswertungs-Algorithmus;
Figur 3
eine schematische Darstellung des Funktionsprinzips der Vorrichtung zur Verbesserung der Planheit durch Ermittlung des Verlängerungs-Sollwertes am Streckrichter beim Einsatz einer Planheitsmeßrolle.
Further details, features and advantages of the invention result from the following explanation of some exemplary embodiments shown schematically in the drawings. Show it
Figure 1
a principle of the device according to the invention in the form of a family tree;
Figure 2
1 with the addition of a second flatness measuring roller and an evaluation algorithm;
Figure 3
is a schematic representation of the functional principle of the device for improving flatness by determining the extension setpoint on the stretching judge when using a flatness measuring roller.

Aus Figur 1 ist die prinzipielle Anordnung der Funktionsglieder des Walzgerüsts WW im Zusammenwirken bzw. in Verknüpfung mit einerseits dem Sollwert der Planheit, den Stellgliedern des Walzgerüsts WW und dem Planheitssignal der Planheitsmeßrolle PMR ersichtlich. Das Planheitssignal der Meßrolle wird mit dem Sollwert STR verglichen und das Resultat als Regelgröße zusammen mit einem Signal der Planheitsmeßrolle PMR der Streckrichteranordnung STR aufgegeben, die ihrerseits die Funktion der Spannrollen beherrscht.The basic arrangement of the functional members of the roll stand is shown in FIG WW in interaction or in combination with the setpoint of the Flatness, the actuators of the WW mill stand and the flatness signal of the Flatness measuring roller PMR visible. The flatness signal of the measuring roller is with the Setpoint STR compared and the result as a controlled variable together with a Signal from the flatness measuring roller PMR of the stretcher straightener arrangement STR is given, which in turn masters the function of the tension pulleys.

Figur 2 zeigt den Stammbaum der vorgenannten Vorrichtung, ergänzt durch eine zweite Planheitsmeßrolle PMR 2 in Nachordnung nach dem Streckrichter STR. Der an der Meßrolle ermittelte Ist-Planheitswert wird in einem Auswertungs-Algorithmus danach untersucht, ob je nach ermittelter Restplanheit im Band gemäß Ist-Signal der Meßrolle PMR 2 im Walzgerüst WW, oder im Streckrichter STR eine Beeinflussung der Planheit am effektivsten ist.Figure 2 shows the family tree of the aforementioned device, supplemented by a second flatness measuring roller PMR 2 after the stretch straightener STR. The actual flatness value determined on the measuring roller is used in an evaluation algorithm then examined whether, depending on the residual flatness determined in the volume Actual signal of the measuring roller PMR 2 in the roll stand WW or in the stretch leveler STR influencing flatness is most effective.

Ergänzend zu den vorgenannten funktionellen bzw. prinzipiellen Zusammenhängen zeigt Figur 3 eine schematische Darstellung des Funktionsprinzips zur Verbesserung der Planheit durch Ermittlung des Streckungs-Sollwertes am Streckrichter STR beim Einsatz einer Planheitsmeßrolle PMR. Hierbei ist zwischen der Planheitsmeßrolle PMR und dem Streckrichter STR eine S-Rollenführung SF angeordnet. In addition to the aforementioned functional and basic relationships Figure 3 shows a schematic representation of the functional principle for improvement flatness by determining the stretching target value at the stretching judge STR when using a flatness measuring roller PMR. Here is between the Flatness measuring roller PMR and the stretch straightener STR an S-roller guide SF arranged.

Aus dem gezeigten Arbeitsschema ist - besser als aus der wörtlichen Beschreibung - das synergistische Zusammenspiel der Meß- und Funktionsglieder erkennbar.The working scheme shown is better than the literal description - The synergistic interaction of the measuring and functional elements can be seen.

Claims (7)

Vorrichtung zur Verbesserung der Planheit von in wenigstens einem Walzgerüst (WW) gewalztem Band, insbesondere von Stahlband,
dadurch gekennzeichnet, dass im Anschluß an ein in Walzrichtung gesehen letztes Walzgerüst (WW) wenigstens eine Planheitsmeßrolle (PMR) und ein Streckrichter (STR) angeordnet sind.Device for improving the flatness of strip rolled in at least one roll stand (WW), in particular steel strip,
characterized in that at least one flatness measuring roller (PMR) and a stretching straightener (STR) are arranged following a last rolling stand (WW) as viewed in the rolling direction. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass zwischen dem Walzgerüst (WW) und dem Streckrichter (STR) eine erste Planheitsmeßrolle (PMR), und nach dem Streckrichter (STR) eine zweite Planheitsmeßrolle (PMR) angeordnet ist, deren Planheits-lst-Signale als Regelgröße zur Sollwert-Korrektur auf den Streckrichter STR, und/oder als Regelgröße zur Korrektur der Stellgrößen des Walzwerks (WW) auf diese zurückgeführt werden.Device according to claim 1,
characterized in that a first flatness measuring roller (PMR) is arranged between the roll stand (WW) and the stretching judge (STR), and a second flatness measuring roller (PMR) is arranged after the stretching judge (STR), the flatness actual signals of which are used as a Correction to the straightening straightener STR, and / or as a control variable for correcting the manipulated variables of the rolling mill (WW). Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass in der Rückführung ein Auswerte-Algorithmus vorgesehen ist, der nach Maßgabe der Signale der Ist-Planheit der ersten und/oder zweiten Planheitsmeßrolle (PMR) eine Entscheidung erstellt, ob eine Beeinflussung der Walzwerks-Stellglieder und/oder des Streckrichters (STR) am effektivsten ist. Device according to claim 1 or 2,
characterized in that an evaluation algorithm is provided in the feedback, which, based on the signals of the actual flatness of the first and / or second flatness measuring roller (PMR), makes a decision as to whether the rolling mill actuators and / or the stretching straightener ( STR) is most effective. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass die Stellglieder des Walzwerks (WW) und des Streckrichters (STR) eine Einheit zur Verbesserung der Planlage von Bändern sind.Device according to claim 3,
characterized in that the actuators of the rolling mill (WW) and the stretching straightener (STR) are a unit for improving the flatness of strips. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der Streckrichter (STR) ohne Kassettensystem ausgebildet ist.Device according to one or more of claims 1 to 4,
characterized in that the stretching judge (STR) is designed without a cassette system. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass dem Streckrichter (STR) eine S-Rollenführung (SF) für das Walzband vorgeordnet und/oder nachgeordnet ist.Device according to one or more of claims 1 to 5,
characterized in that an S-roll guide (SF) for the rolled strip is arranged upstream and / or downstream of the stretching judge (STR). Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass das Walzgerüst (WW), die Planheitsmeßrollen (PMR 1 und 2), die S-Rollenführung (SF) sowie der Streckrichter (STR) mittels Meß- und Regeleinheiten regeltechnisch miteinander verknüpft sind.Device according to one or more of claims 1 to 6,
characterized in that the rolling stand (WW), the flatness measuring rollers (PMR 1 and 2), the S-roller guide (SF) and the stretching straightener (STR) are linked to one another in terms of control technology by means of measuring and control units.
EP02000832A 2001-02-07 2002-01-15 Device for improving the flatness of rolled strip, in particular of steel strip Revoked EP1230993B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10105833 2001-02-07
DE10105833 2001-02-07
DE2001132105 DE10132105A1 (en) 2001-02-07 2001-07-03 Device for improving the planarity of a steel strip rolled in a roll stand comprises planarity measuring rollers and a tension leveling machine connected to the roll stand
DE10132105 2001-07-03

Publications (3)

Publication Number Publication Date
EP1230993A2 true EP1230993A2 (en) 2002-08-14
EP1230993A3 EP1230993A3 (en) 2005-01-26
EP1230993B1 EP1230993B1 (en) 2007-12-19

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EP02000832A Revoked EP1230993B1 (en) 2001-02-07 2002-01-15 Device for improving the flatness of rolled strip, in particular of steel strip

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EP (1) EP1230993B1 (en)
AT (1) ATE381394T1 (en)
DE (1) DE50211379D1 (en)

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CN110314939A (en) * 2019-07-15 2019-10-11 张家港宏昌钢板有限公司 A kind of strip steel head levelling method carried out using skin pass mill group

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DE102017202909A1 (en) 2016-11-07 2018-05-09 Sms Group Gmbh Method and plant for producing a metallic strip

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JPS63238927A (en) * 1987-03-27 1988-10-05 Sumitomo Metal Ind Ltd Method for rectifying flatness of strip steel
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JPH11281345A (en) * 1998-03-30 1999-10-15 Nisshin Steel Co Ltd Method of measuring shape of moving metal strip in continuous surface treating apparatus for metal strips
WO2002016057A1 (en) * 2000-08-24 2002-02-28 Sms Demag Aktiengesellschaft Method and device for tension levelling a cold-rolled strip and regulating the degree of levelling

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US3429164A (en) * 1966-04-08 1969-02-25 Armco Steel Corp Method of processing ferrous strip
US3839888A (en) * 1972-11-06 1974-10-08 Wean United Inc Tension levelling of strip
JPS63238927A (en) * 1987-03-27 1988-10-05 Sumitomo Metal Ind Ltd Method for rectifying flatness of strip steel
US5341664A (en) * 1992-09-10 1994-08-30 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Roll set for thin metal strip
JPH11281345A (en) * 1998-03-30 1999-10-15 Nisshin Steel Co Ltd Method of measuring shape of moving metal strip in continuous surface treating apparatus for metal strips
WO2002016057A1 (en) * 2000-08-24 2002-02-28 Sms Demag Aktiengesellschaft Method and device for tension levelling a cold-rolled strip and regulating the degree of levelling

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Title
KAPELLNER A: "NEW DEVELOPMENTS IN SKINPASSING FOR HOT DIP GALVANIZING LINES" IRON AND STEEL ENGINEER, ASSOCIATION OF IRON AND STEEL ENGINEERS. PITTSBURGH, US, Bd. 74, Nr. 3, März 1997 (1997-03), Seiten 39-42, XP000689856 ISSN: 0021-1559 *
PATENT ABSTRACTS OF JAPAN Bd. 0130, Nr. 28 (M-788), 23. Januar 1989 (1989-01-23) -& JP 63 238927 A (SUMITOMO METAL IND LTD), 5. Oktober 1988 (1988-10-05) *
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 01, 31. Januar 2000 (2000-01-31) -& JP 11 281345 A (NISSHIN STEEL CO LTD), 15. Oktober 1999 (1999-10-15) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110314939A (en) * 2019-07-15 2019-10-11 张家港宏昌钢板有限公司 A kind of strip steel head levelling method carried out using skin pass mill group
CN110314939B (en) * 2019-07-15 2020-12-01 张家港宏昌钢板有限公司 Strip steel head flattening method by utilizing flattening unit

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