EP0972580B1 - Method for presetting cold-forming installations - Google Patents
Method for presetting cold-forming installations Download PDFInfo
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- EP0972580B1 EP0972580B1 EP99110703A EP99110703A EP0972580B1 EP 0972580 B1 EP0972580 B1 EP 0972580B1 EP 99110703 A EP99110703 A EP 99110703A EP 99110703 A EP99110703 A EP 99110703A EP 0972580 B1 EP0972580 B1 EP 0972580B1
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- hardness
- rolling
- cold
- carried out
- measured
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- 238000000034 method Methods 0.000 title claims description 20
- 238000009434 installation Methods 0.000 title abstract description 3
- 238000012937 correction Methods 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims description 29
- 238000007542 hardness measurement Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000005482 strain hardening Methods 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 description 11
- 230000008023 solidification Effects 0.000 description 11
- 238000000137 annealing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010972 statistical evaluation Methods 0.000 description 1
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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
- B21B37/58—Roll-force control; Roll-gap 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
- B21B1/24—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 continuous or semi-continuous process
- B21B1/28—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 continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- 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
- 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
- B21B2001/228—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 skin pass rolling or temper rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- 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
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
Definitions
- the invention relates to a method for presetting cold-forming installations, such as cold rolling mills, temper rolling mills, stretch bending mills, straightening machines and other.
- Cold rolling mills are used in reversing and tandem construction due to a preprocessing plan pre-set before the start of rolling. This should be the Deformations caused by the predicted stresses Rolling stands compensated and a rolled product with the desired dimensions getting produced.
- strain hardening is known, for example, from EP-A-0 102 937 (US Pat used there for pitch control) of EP - A - 0 436 762 and JP - A - 60 250 816 known, wherein in the latter the measurement of the hardness of Walzgutes is mentioned before the work hardening.
- the invention is based on the object, a method for optimal Stichplanaustechnisch to create for the respective Walzcharge.
- the stated object is achieved in that the hardness of the deformed Material measured just before its cold deformation and to correct its hardening curve and the preset for stitch plan optimization based on it the cold deformation plant is used.
- the advantage of adapting the hardening curve about a hardness measurement is that on the one hand deviations in the Umformfesttechnik of a material (depending among other things on the chemical composition, differences in cooling after hot rolling or during the annealing process, structural state in general) without prior information directly before the start of rolling can be included in the layout design and on the other, different materials with similar hardening behavior can be managed with only one hardening curve.
- the standard solidification curve of a material or a Material group with associated standard values of hardness, yield strength, Tensile strength, etc. by additive or multiplicative linkage with a Correction member is corrected, the at least one of the measured hardness value contains determined tensile strength.
- An advantageous development of the invention is that the difference between the calculated by means of hardness measurement and the effective measured during rolling rolling force of the first stand or the first stitch for mathematical correction of the predicted rolling force of the following rolling stand in tandem systems or the following trick is used in reversing. Since a further adaptation of the solidification curve by hardness measurement between the rolling stands of a tandem mill is not possible, a mathematically determined correction value for the rolling force of the respective following rolling stand is determined from the difference between predicted and measured rolling force of a rolling stand.
- Reversing stands require a hardness measurement before each stitch possible but costly and time consuming. However, it is sufficient, the hardness only in the inlet from the first stitch to Measure and deviations of the derived rolling force as Correction value to be considered in the second stitch. Should the measured rolling force is still too large deviations From the precalculated exhibit is another Hardness measurement before the third stitch makes sense.
- the hardness measurement is dynamic and preferably at several Make the material to be deformed is the required measuring time minimized and the measurement result averaged and therefore representative of the respective batch.
- the known EQUOTIP measuring method is used used.
- the hardness measurement is preferred during process-related downtimes of Cold deformation systems takes place. This does not occur Delay in the production process. So can the hardness measurement in tandem roads preferably between uncoiler and Welding machine done during welding and thus the Take advantage of welding time. Accordingly, the hardness is measured in Reversier Nos.
- each k f ( ⁇ ) value is multiplied by the factor k (H 0 , H 1 , R m0 ).
- the inventive method is not only suitable for Cold rolling mills but also for all types of Molding scaffolding, stretch bender, straightening machines (band and Sheet metal), as well as for cold profile straightening machines and Cold rolling mills for profiles and wire.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Hydroponics (AREA)
- Control Of Heat Treatment Processes (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Voreinstellen von Kaltverformungsanlagen, wie Kaltwalzstraßen, Dressiergerüste, Streckbiegerichter, Richtmaschinen und andere.The invention relates to a method for presetting cold-forming installations, such as cold rolling mills, temper rolling mills, stretch bending mills, straightening machines and other.
Kaltwalzstraßen werden in Reversier- und Tandembauweise aufgrund einer Stichplanvorausberechnung vor dem Walzbeginn voreingestellt. Dadurch sollen die durch die vorausberechneten Beanspruchungen verursachten Verformungen der Walzgerüste kompensiert und ein Walzprodukt mit den gewünschten Abmessungen hergestellt werden.Cold rolling mills are used in reversing and tandem construction due to a preprocessing plan pre-set before the start of rolling. This should be the Deformations caused by the predicted stresses Rolling stands compensated and a rolled product with the desired dimensions getting produced.
Die Berechnung der Beanspruchungen beruht auf der Verfestigungskurve, die den Zusammenhang zwischen der Verformung (ε) und der Umformfestigkeit kf = kf (ε) der unterschiedlichen Werkstoffe als Standardwerte darstellt. Bedingt durch Schwankungen der chemischen Zusammensetzung, den Unterschieden beim Abkühlen nach dem Warmwalzen oder während der Glühprozesses und des allgemeinen Gefügezustands weicht die reale Verfestigungskurve von der Standardverfestigungskurve mehr oder weniger ab. Deshalb stimmt die auf Standardwerte basierende Stichplanauslegung häufig nicht, wodurch sich Formabweichungen und Mehraufwand beim Walzen ergeben.The calculation of the stresses is based on the hardening curve, which represents the relationship between the deformation (ε) and the deformation strength k f = k f (ε) of the different materials as standard values. Due to variations in the chemical composition, the differences in cooling after hot rolling or during the annealing process and the general microstructure state, the real solidification curve deviates more or less from the standard solidification curve. Therefore, the default-based passplan design is often inconsistent, resulting in form deviations and extra rolling costs.
Der Einfluss der Kaltverfestigung ist beispielsweise aus der EP - A - 0 102 937 (wird dort für die Anstellregelung verwendet) der EP - A - 0 436 762 und der JP - A - 60 250 816 bekannt, wobei in der letztgenannten die Messung der Härte des Walzgutes vor der Kaltverfestigung erwähnt wird.The influence of strain hardening is known, for example, from EP-A-0 102 937 (US Pat used there for pitch control) of EP - A - 0 436 762 and JP - A - 60 250 816 known, wherein in the latter the measurement of the hardness of Walzgutes is mentioned before the work hardening.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur optimalen Stichplanauslegung für die jeweilige Walzcharge zu schaffen.The invention is based on the object, a method for optimal Stichplanauslegung to create for the respective Walzcharge.
Die gestellte Aufgabe wird dadurch gelöst, dass die Härte des zu verformenden Materials kurz vor dessen Kaltverformung gemessen und zur Korrektur seiner Verfestigungskurve und der darauf basierenden Voreinstellung zur Stichplanoptimierung der Kaltverformungsanlage verwendet wird. Der Vorteil der Adaption der Verfestigungskurve über eine Härtemessung liegt darin, dass zum einen Abweichungen in der Umformfestigkeit eines Werkstoffes (abhängig unter anderem von der chemischen Zusammensetzung, Unterschieden beim Abkühlen nach dem Warmwalzen oder während des Glühprozesses, Gefügezustand allgemein) ohne Vorinformation direkt vor Walzbeginn in die Stichplanauslegung eingehen können und das zum anderen unterschiedliche Werkstoffe mit ähnlichem Verfestigungsverhalten mit nur einer Verfestigungskurve verwaltet werden können.The stated object is achieved in that the hardness of the deformed Material measured just before its cold deformation and to correct its hardening curve and the preset for stitch plan optimization based on it the cold deformation plant is used. The advantage of adapting the hardening curve about a hardness measurement is that on the one hand deviations in the Umformfestigkeit of a material (depending among other things on the chemical composition, differences in cooling after hot rolling or during the annealing process, structural state in general) without prior information directly before the start of rolling can be included in the layout design and on the other, different materials with similar hardening behavior can be managed with only one hardening curve.
Es ist von Vorteil, dass die Standardverfestigungskurve eines Werkstoffs oder einer Werkstoffgruppe mit dazugehörenden Standardwerten von Härte, Streckgrenze, Zugfestigkeit usw. durch additive oder multiplikative Verknüpfung mit einem Korrekturglied korrigiert wird, das zumindest eine über den gemessenen Härtewert ermittelten Zugfestigkeit enthält. Die Adaption einer vorhandenen Verfestigungskurve durch additive oder multiplikative Verknüpfung mit einem Korrekturglied ist auf einfache Weise zu verwirklichen.It is advantageous that the standard solidification curve of a material or a Material group with associated standard values of hardness, yield strength, Tensile strength, etc. by additive or multiplicative linkage with a Correction member is corrected, the at least one of the measured hardness value contains determined tensile strength. The adaptation of an existing hardening curve by additive or multiplicative linkage with a correction term to realize in a simple way.
Eine vorteilhafte Weiterbildung der Erfindung besteht darin,
dass die Differenz zwischen der mittels Härtemessung
vorausberechneten und der beim Walzen effektiv gemessenen
Walzkraft des ersten Gerüstes bzw. des ersten Stiches zur
rechnerischen Korrektur der vorausberechneten Walzkraft des
jeweils folgenden Walzgerüstes bei Tandemanlagen bzw. des
folgenden Stiches bei Reversieranlagen verwendet wird. Da eine
weitere Adaption der Verfestigungskurve durch Härtemessung
zwischen den Walzgerüsten einer Tandemstraße nicht möglich
ist, wird aus der Differenz zwischen vorausberechneter und
gemessener Walzkraft eines Walzgerüstes ein nur rechnerisch
ermittelter Korrekturwert für die Walzkraft des jeweils
folgenden Walzgerüstes ermittelt.An advantageous development of the invention is
that the difference between the calculated by means of hardness measurement and the effective measured during rolling rolling force of the first stand or the first stitch for mathematical correction of the predicted rolling force of the following rolling stand in tandem systems or the following trick is used in reversing. Since a further adaptation of the solidification curve by hardness measurement between the rolling stands of a tandem mill is not possible, a mathematically determined correction value for the rolling force of the respective following rolling stand is determined from the difference between predicted and measured rolling force of a rolling stand.
Bei Reversiergerüsten ist eine Härtemessung vor jedem Stich möglich aber kosten- und zeitaufwendig. Es ist jedoch ausreichend, die Härte nur im Einlauf vom ersten Stich zu messen und Abweichungen der daraus abgeleiteten Walzkraft als Korrekturwert bei dem zweiten Stich zu berücksichtigen. Sollte die dabei gemessene Walzkraft immer noch zu große Abweichungen von der vorausberechneten aufweisen, ist eine weitere Härtemessung vor dem dritten Stich sinnvoll.Reversing stands require a hardness measurement before each stitch possible but costly and time consuming. However, it is sufficient, the hardness only in the inlet from the first stitch to Measure and deviations of the derived rolling force as Correction value to be considered in the second stitch. Should the measured rolling force is still too large deviations From the precalculated exhibit is another Hardness measurement before the third stitch makes sense.
Von Vorteil ist auch, wenn die Anpassung der Standardverfestigungskurve nach der jeweils gemessenen Härte des Walzgutes und nach ausgewerteten Abweichungen und Korrekturwerten der Walzkraft früherer Walzungen erfolgt. Die statistische Auswertung einer Anzahl von Walzungen bietet die Gewähr einer treffsicheren Korrektur der dem ersten Walzgerüst bzw. ersten Stich folgenden Bearbeitungsschritte.It is also advantageous if the adaptation of Standard solidification curve according to the measured hardness of the rolling stock and evaluated deviations and Correction values of the rolling force of earlier rolling done. The statistical evaluation of a number of rolling offers the Guarantee of a correct correction of the first mill stand or first stitch following processing steps.
Wenn die Härtemessung dynamisch und vorzugsweise an mehreren Stellen des zu verformenden Materials erfolgt, ist die erforderliche Messzeit minimiert und das Messergebnis gemittelt und somit repräsentativ für die jeweilige Charge. Vorzugsweise wird dabei das bekannte EQUOTIP-Messverfahren benutzt.If the hardness measurement is dynamic and preferably at several Make the material to be deformed is the required measuring time minimized and the measurement result averaged and therefore representative of the respective batch. Preferably, the known EQUOTIP measuring method is used used.
Dadurch, dass zusätzlich zur Härte auch die Temperatur und die Oberflächenreibung es zu verformenden Materials gemessen werden, sind weitere wichtige Parameter berücksichtigt, die die Verfestigungskurve beeinflussen.Because in addition to the hardness the temperature and the Surface friction measured it to be deformed material be taken into account are other important parameters that influence the hardening curve.
Es ist ferner vorteilhaft, dass die Härtemessung vorzugsweise während verfahrensbedingter Stillstandszeiten der Kaltverformungsanlagen erfolgt. Dadurch tritt keinerlei Verzögerung im Produktionsablauf ein. So kann die Härtemessung bei Tandemstraßen vorzugsweise zwischen Abhaspel und Schweißmaschine während des Schweißens erfolgen und somit die Schweißzeit ausnutzen. Entsprechend erfolgt die Härtemessung bei Reversierstraßen, vorzugsweise in Bereich von deren Dickenmessgeräte während der Eichung derselben und erfordert ebenfalls keine Zusatzzeit.It is also advantageous that the hardness measurement is preferred during process-related downtimes of Cold deformation systems takes place. This does not occur Delay in the production process. So can the hardness measurement in tandem roads preferably between uncoiler and Welding machine done during welding and thus the Take advantage of welding time. Accordingly, the hardness is measured in Reversierstraßen, preferably in the range of Thickness gauges during the calibration of the same and requires also no extra time.
Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung und den Zeichnungen bzw. Diagrammen, in denen Ausführungsbeispiele der Erfindung schematisch dargestellt sind.Further features of the invention will become apparent from the following Description and the drawings or diagrams in which Embodiments of the invention shown schematically are.
Es zeigen:
- Fig. 1
- eine Verfestigungskurve mit additiver Korrektur,
- Fig. 2
- eine Verfestigungskurve mit multiplikativer Korrektur.
- Fig. 1
- a solidification curve with additive correction,
- Fig. 2
- a hardening curve with multiplicative correction.
In beiden Figuren 1 und 2 sind die Standardverfestigungskurven mit Verfestigungskraft kf0 als Funktion des Verformungswegs (ε) ausgezogen und die korrigierten Verfestigungskurven Kf1 (ε) gestrichelt dargestellt.In both Figures 1 and 2, the standard solidification curves with solidification force k f0 are drawn as a function of the deformation path (ε) and the corrected solidification curves K f1 (ε) shown in dashed lines.
In Figur 1 unterscheiden sich kf0 (ε) und kf1 (ε) durch ein
additives Korrekturglied
Dabei sind:
- kf0 (0) =
- Anfangswert der Standardverfestigungskurve bei ε=0,
- H0 =
- Standardhärtewert
- H1 =
- gemessener Härtewert,
- Rm0 =
- Standardzugfestigkeit.
- k f0 (0) =
- Initial value of the standard solidification curve at ε = 0,
- H 0 =
- Standard hardness value
- H 1 =
- measured hardness value,
- R m0 =
- Standardzugfestigkeit.
Demnach gilt:
In Figur 2 ist jeder kf (ε)-Wert mit dem Faktor k(H0, H1, Rm0...) multipliziert.In Figure 2, each k f (ε) value is multiplied by the factor k (H 0 , H 1 , R m0 ...).
Demnach gilt:
Beide Korrekturmodelle geben den Einfluss der gemessenen Härte H1 auf die Verfestigungskraft kf1 (ε) wieder. Both correction models reflect the influence of the measured hardness H 1 on the solidification force k f1 (ε).
Das erfindungsgemäße Verfahren eignet sich nicht nur für Kaltwalzstraßen, sondern auch für alle Arten von Dressiergerüsten, Streckbiegerichter, Richtmaschinen (Band und Blech), ebenso für Kaltprofilrichtmaschinen und Kaltwalzstraßen für Profile und Draht.The inventive method is not only suitable for Cold rolling mills but also for all types of Molding scaffolding, stretch bender, straightening machines (band and Sheet metal), as well as for cold profile straightening machines and Cold rolling mills for profiles and wire.
Claims (10)
- Method for presetting cold-forming plants, such as cold rolling trains, sizing stands, stretching-bending straightening means, straightening machines and others, characterised in that the hardness of the material to be formed is measured shortly before cold-forming thereof and is used for correction of its work-hardening curve and of the presetting based thereon for pass plan design of the cold-forming plant.
- Method according to claim 1, characterised in that the standard work-hardening curve of the material or a material group with associated standard values of hardness, strain limit, tensile strength, etc., is corrected by additive or multiplicative linking with a correction element containing at least a tensile strength ascertained by way of the measured hardness value.
- Method according to claim 1 or 2, characterised in that the difference between the rolling force, which is precalculated by means of hardness measurement, and the effective rolling force, which is measured during rolling, of the first stand or the first pass is used for computerised correction of the precalculated rolling force of the respective succeeding rolling stand in tandem plants or the following pass in the case of reversing plants.
- Method according to one of claims 1 to 3, characterised in that adaptation of the standard work-hardening curve is carried out according to the respectively measured hardness of the stock to be rolled and according to evaluated deviations and correction values of the rolling force of earlier rollings.
- Method according to one of claims 1 to 4, characterised in that the hardness measurement is carried out dynamically, preferably according to the EQUOTIP measuring method.
- Method according to one of claims 1 to 5, characterised in that the hardness measurement is carried out at several places of the material to be formed.
- Method according to one of claims 1 to 6, characterised in that in addition to the hardness also the temperature and the surface friction of the material to be formed are measured.
- Method according to one of claims 1 to 7, characterised in that the hardness measurement is preferably carried out during standstill times, which are due to the method, of the cold work-hardening plant.
- Method according to one of claims 1 to 8, characterised in that the hardness measurement in the case of tandem rolling trains is preferably carried out between unreeling means and welding machine during the welding.
- Method according to one of claims 1 to 8, characterised in that the hardness measurement in the case of reversing rolling trains is preferably carried out in the region of the thickness measuring apparatus during the calibrating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19831480 | 1998-07-14 | ||
| DE19831480A DE19831480C1 (en) | 1998-07-14 | 1998-07-14 | Process for presetting cold forming plants |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0972580A2 EP0972580A2 (en) | 2000-01-19 |
| EP0972580A3 EP0972580A3 (en) | 2002-12-11 |
| EP0972580B1 true EP0972580B1 (en) | 2005-08-10 |
Family
ID=7873967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99110703A Expired - Lifetime EP0972580B1 (en) | 1998-07-14 | 1999-06-02 | Method for presetting cold-forming installations |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6161406A (en) |
| EP (1) | EP0972580B1 (en) |
| JP (1) | JP4390917B2 (en) |
| AT (1) | ATE301510T1 (en) |
| CA (1) | CA2277550C (en) |
| DE (2) | DE19831480C1 (en) |
| ES (1) | ES2245061T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010112196A1 (en) | 2009-04-02 | 2010-10-07 | Sms Siemag Ag | Roller unit for the continuous rolling of band-shaped rolling stock |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2662158A1 (en) * | 2012-05-07 | 2013-11-13 | Siemens Aktiengesellschaft | Method for processing milled goods and milling system |
| CN103357656B (en) * | 2013-07-08 | 2015-02-04 | 济钢集团有限公司 | Manufacturing technology of cold rolling ultrathin strip steel with large roller diameter and high screw-down rate |
| CN109248927B (en) * | 2017-07-13 | 2019-12-13 | 鞍钢股份有限公司 | rolling force coefficient limiting value specification control method |
| TWI711496B (en) * | 2020-01-21 | 2020-12-01 | 中國鋼鐵股份有限公司 | Method for improving setting of temperature control rolling process |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1270868A (en) * | 1968-09-23 | 1972-04-19 | Froehling Fa Josef | Methods and apparatus for controlling a machine for processing strip material |
| US3820366A (en) * | 1972-11-06 | 1974-06-28 | Westinghouse Electric Corp | Rolling mill gauge control method and apparatus including temperatureand hardness correction |
| AT374705B (en) * | 1982-09-07 | 1984-05-25 | Voest Alpine Ag | DEVICE FOR CONTROLLING A COLD ROLLING DEVICE |
| JPS60250816A (en) * | 1984-05-29 | 1985-12-11 | Kawasaki Steel Corp | Method for controlling initial roll gap in cold rolling mill |
| US5054302A (en) * | 1989-04-07 | 1991-10-08 | Kawasaki Steel Corporation | Hardness compensated thickness control method for wet skin-pass rolled sheet |
| DE4015750A1 (en) * | 1989-05-19 | 1990-11-22 | Karl Heinz Dr Ing Koethemann | Cold-rolled metal strip of required hardness prodn. - involves forming rough strip and then rolling it to finished form with predetermined nominal thickness |
| EP0436762A1 (en) * | 1990-01-12 | 1991-07-17 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method and apparatus for achieving a predetermined yield point and surface roughness during cold-laminating of metallic pre-treated strips |
| US5609053A (en) * | 1994-08-22 | 1997-03-11 | Alcan Aluminum Corporation | Constant reduction multi-stand hot rolling mill set-up method |
| DE19622825B4 (en) * | 1996-06-07 | 2005-03-31 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH | Presetting for cold rolling reversing stand |
-
1998
- 1998-07-14 DE DE19831480A patent/DE19831480C1/en not_active Expired - Fee Related
-
1999
- 1999-06-02 AT AT99110703T patent/ATE301510T1/en active
- 1999-06-02 DE DE59912379T patent/DE59912379D1/en not_active Expired - Lifetime
- 1999-06-02 EP EP99110703A patent/EP0972580B1/en not_active Expired - Lifetime
- 1999-06-02 ES ES99110703T patent/ES2245061T3/en not_active Expired - Lifetime
- 1999-07-08 US US09/349,633 patent/US6161406A/en not_active Expired - Lifetime
- 1999-07-08 JP JP19475899A patent/JP4390917B2/en not_active Expired - Lifetime
- 1999-07-09 CA CA002277550A patent/CA2277550C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010112196A1 (en) | 2009-04-02 | 2010-10-07 | Sms Siemag Ag | Roller unit for the continuous rolling of band-shaped rolling stock |
| DE102009060828A1 (en) | 2009-04-02 | 2010-10-14 | Sms Siemag Ag | Rolling mill for continuous rolling of strip-shaped rolling stock |
Also Published As
| Publication number | Publication date |
|---|---|
| US6161406A (en) | 2000-12-19 |
| EP0972580A2 (en) | 2000-01-19 |
| CA2277550C (en) | 2007-09-25 |
| JP4390917B2 (en) | 2009-12-24 |
| ATE301510T1 (en) | 2005-08-15 |
| CA2277550A1 (en) | 2000-01-14 |
| DE19831480C1 (en) | 2000-01-13 |
| DE59912379D1 (en) | 2005-09-15 |
| JP2000042602A (en) | 2000-02-15 |
| EP0972580A3 (en) | 2002-12-11 |
| ES2245061T3 (en) | 2005-12-16 |
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