EP1018376A2 - Train de laminage pour laminer des produits en forme de barres, p.e. d'acier en barres ou de fils - Google Patents

Train de laminage pour laminer des produits en forme de barres, p.e. d'acier en barres ou de fils Download PDF

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Publication number
EP1018376A2
EP1018376A2 EP99124714A EP99124714A EP1018376A2 EP 1018376 A2 EP1018376 A2 EP 1018376A2 EP 99124714 A EP99124714 A EP 99124714A EP 99124714 A EP99124714 A EP 99124714A EP 1018376 A2 EP1018376 A2 EP 1018376A2
Authority
EP
European Patent Office
Prior art keywords
rolling
stands
roll
stand
stock
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.)
Withdrawn
Application number
EP99124714A
Other languages
German (de)
English (en)
Other versions
EP1018376A3 (fr
Inventor
Otmar Dr. Palzer
Erich Grossmann
Hubert Müller
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1018376A2 publication Critical patent/EP1018376A2/fr
Publication of EP1018376A3 publication Critical patent/EP1018376A3/fr
Withdrawn legal-status Critical Current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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/64—Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • 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
    • 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
    • B21B2203/22—Hinged chocks
    • 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
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/28—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by toggle-lever mechanisms
    • 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
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • 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

Definitions

  • the present invention relates to a rolling mill for rolling rod-shaped Rolled material, e.g. B. steel bars or wire, with several adjustable on nips, of the rolling stock passed through one after the other, combined into pairs of rolling stands active rolling stands, by means of which the rolling stock is applied with Rolling forces can be rolled to a final height and a vertical width perpendicular thereto.
  • a rolling mill for rolling rod-shaped Rolled material e.g. B. steel bars or wire
  • several adjustable on nips of the rolling stock passed through one after the other, combined into pairs of rolling stands active rolling stands, by means of which the rolling stock is applied with Rolling forces can be rolled to a final height and a vertical width perpendicular thereto.
  • Rolling mills of this type are generally known.
  • the individual mill stands one Such rolling mill are alternately as horizontal and as vertical stands trained, the last pass rolling mill always the end profile, z. B. a round, square or hexagonal caliber.
  • the roll stands are open by means of electric or hydraulic motors Roll gap adjustable.
  • the setting of the roll gap can usually only in load-free state. It is not possible to adjust the nips under load possible. It is only possible to change the speeds of the roll stands during the Operating change. Other interventions such as B. are a roll gap correction not possible.
  • the rolling stands take over in the rolling train depending on the rolling Product, various tasks, namely either an acceptance or a so-called Presizing or a so-called sizing.
  • the main task of acceptance stands is to make the cross section of the rolling stock possible greatly reduce.
  • the respective roll stand should be as rigid as possible his.
  • the cross section can be optimized.
  • the main task of presizing scaffolds is the ratio of height to width of the rolling stock in front of the subsequent sizing stands to a defined value adjust. For this, z. B. with a round end profile, the oval frameworks high and the round frameworks have an optimal rigidity. Because by that temperature and cross-sectional disturbances are even on both dimensions distributed.
  • the main task of sizing stands is to roll the rolling stock to the desired final dimensions to be rolled and at the same time to ensure good ovality of the rolling stock.
  • z. B. with a round end profile the oval structure relatively high and the round scaffold have a lower, optimal rigidity.
  • the last two active roll stands always work in sizing mode. At least a pair of mill stands directly upstream of the sizing stands works in Presizing mode. The remaining mill stands work in acceptance mode. Because of The adjustability of the fractions can now be set which rolling stands work in sizing mode, in presizing mode and in acceptance mode.
  • the ovality of the end product is particularly good if the rolling force-related Springing of the sizing frames was compensated on average for smaller fractions are called the spring force-related spring-ups of the presizing stands.
  • Tolerance compliance is even better when the rolling stock is removed from the presizing stands is rolled such that the sizing frames in their most favorable dynamic range operate.
  • This can e.g. B. can be achieved in that the roll gaps of the presizing stands can be determined from the roll gaps of the sizing stands.
  • the dimensional accuracy of the rolled rolling stock can be increased even further, if a measuring device is added to the sizing stand that is later passed through by the rolling stock is subordinate to the detection of the final height and final width of the rolling stock and the roll gaps of the sizing stands based on the recorded end height and width can be corrected (monitor control).
  • the rolling stock can be rolled even more precisely, even if the other pairs of stands, preferably even any other roll stand, measuring devices are subordinate to record the height and width of the rolling stock.
  • the roll gaps for these roll stands can be taken directly from the detected heights and widths can be determined.
  • the rolling mill a storage device for storing a Variety of material properties of rolled goods, the final height, the final width, the framework parameters and the framework settings, an input device for entering the material properties, the final height and the final width of a new rolling stock to be rolled and a comparison device for comparing the material properties, the final height and the final width of the rolling stock to be rolled with the material properties, the final height and the final width of the saved Rolled goods and the current stand parameters with the saved Has stand parameters, so that the roll stands at matching Stand parameters when rolling a new rolling stock onto the stand settings for an already rolled rolling stock with corresponding material properties and final dimensions can be preset.
  • the stand parameters particularly include the roll diameters.
  • the scaffold settings include in particular the roll gaps, the rolling speeds and the fractions.
  • the material properties of the rolling stock include in particular the temperature, the initial dimensions and the quality of the rolling stock.
  • the rolling mill a comparison device to compare yourself when rolling the new rolling stock resulting rolling parameters with those corresponding to the new stand settings Rolling parameters and an output device for outputting a Warning signal when there are significant deviations when rolling the new one Rolling stock resulting from the rolling parameters with the new stand settings
  • Corresponding rolling parameters it is possible to use the billet to check whether he actually entered the material properties having.
  • the rolling parameters include in particular the rolling forces and / or the rolling moments.
  • a rolling mill has roll stands 1-10, which are in succession are passed through by a rolling stock 11.
  • the rolling stock 11 is in the present Case a rod-shaped rolling stock 11, for. B. steel bars or wire.
  • the roll stand 10 is the first to pass through the roll stand 1 as the last.
  • the mill stands 1 - 10 are alternately designed as horizontal and vertical frames. she have z. B. alternately round and oval calibers. That of the rolling stock 11 last passed through mill stand 1 z. B. a round caliber.
  • Two in a row Roll stands 1 - 10 are combined to form a pair of roll stands.
  • the rolling stock 11 is subjected to rolling forces by means of the roll stands 1-10 F3 - F10 can be rolled to a final height h and a vertical width b perpendicular to this.
  • the last two roll stands 1 and 2 are according to the embodiment inactive. So you do not roll the rolling stock 11.
  • the rolling stock 11 passes through only the last two roll stands 1, 2. So there are only the roll stands 3 - 10 active. This is possible because the final dimensions h, b according to the embodiment are relatively large. With smaller values for the final dimensions h, b would the last two roll stands 1, 2 are also activated.
  • the quick-change devices have inactive mill stands - in this case the Rolling stands 1 and 2 - extended from the rolling mill and only when necessary entered the rolling mill.
  • the roll stands 1 - 10 are all constructed in the same way. The following is therefore only the structure of the roll stand 3 described.
  • a hydraulic cylinder unit 12 is assigned to the roll stand 3, by means of which a roll gap s3 can be set under load.
  • the required rolling force F3 is associated with the hydraulic cylinder unit 12 and the working pressure p3 to whom this is applied.
  • the hydraulic cylinder unit 12 is from controlled a roll gap control 13.
  • the hydraulic cylinder unit 12 is controlled by the roll gap control 13 first controlled in such a way that the roll gap s3 closed becomes.
  • the working pressure p3 is practically zero. If the roll gap s3 completely has closed, the working pressure p3 increases. Because of the increasing working pressure p3 increases the force F3 exerted on the roll stand 3.
  • the mill stand 3 thereby springs open.
  • the roll gap control 13 is continuously transmitted at which working pressure p3 which adjustment path a3 of the hydraulic cylinder unit 12 is taken. From this curve, the roll gap control 13 can then on the one hand the zero point of the roll gap s3 and the spring constant C3 of the Determine roll stand 3.
  • the spring constant C3 is required to when rolling the spring force-related suspension, which is the product of spring constant C3 and rolling force F3 results.
  • the roll gap control 13 becomes a desired roll gap s3 * and an expected rolling force F3 * is given. Due to the known zero point of the Roll gap s3 and the known spring constant C3 can control the roll gap 13 then position the hydraulic cylinder unit 12 in such a way that the roll stand 3 assumes the target roll gap s3 * after springing open.
  • the rolling force F3 varies during rolling.
  • the roll stand 3 springs up more or less in accordance with the variable rolling force F3.
  • the spring-force-related spring-back can be continuously measured by detecting the working pressure p3 and correspondingly correcting the adjustment path a3 C3 ⁇ (F3 - F3 *) be compensated.
  • the lamination of the roll stand 3 due to the rolling force is therefore only compensated to a fraction t3.
  • the fraction t3 is given to the roll gap control 13 by a higher-level computer 14 - see FIG. 1.
  • the sizing frames 3, 4 only work with optimal dynamics if the cross section of the rolling stock 11 fed to them in a predetermined cross-sectional area Therefore, the rolling stock 11 is from the rolling stands 5, 6, the sizing stands 3, 4 are immediately upstream, always rolled such that the Sizing stands 3, 4 are operated in their most favorable dynamic range.
  • the Roll stands 5, 6 thus work as so-called presizing stands 5, 6.
  • rolling stands 7-10 are immediately upstream of the presizing stands 5, 6. In these, the rolling stock 11 is rolled as much as possible to make it with a minimum total number of stitches to its final dimensions h, b roll can.
  • the rolling stands 7-10 thus work as so-called acceptance stands 7 - 10th
  • the roll stands 5, 6 are used as presizing stands 5, 6 operated.
  • the rolling stands of two or even could three pairs of mill stands can be operated as presizing stands.
  • the two inactive roll stands 1 and 2 a measuring device 15 for detecting the final height h and final width b of the rolling stock 11.
  • the detected end values h, b are transmitted to the higher-level computer 14.
  • the roll gaps s3, s4 are thus due to the final height h and the detected final width b can be corrected.
  • the superordinate computer 14 can on the basis of the transmitted final dimensions h, b and the nominal roll gap s3 *, s4 * of the sizing stands 3, 4 the dimensions determine the rolling stock 11 between the roll stands 4 and 5. Based on these Ascertainable dimensions, the higher-level computer 14 can then also target roll gaps Determine s5 *, s6 * for the presizing stands 5, 6 and their roll gap controls pretend.
  • the measuring device 15 behind the Roll stand 1 it is also possible, in addition to the measuring device 15 behind the Roll stand 1 to provide further measuring devices 16 - 19, which are immediately behind the pair of sizing stands, the pair of presizing stands and the pairs of acceptance stands are arranged. There is preferably even 1 behind each roll stand - 10 a measuring device 15 -19 arranged. Using the higher-level computer 14 is then the respective roll gap regulations of the individual roll stands 3 - 10 can be specified directly which roll gap s3 * - s10 * you should set.
  • Tension measuring devices are arranged between the roll stands 1-10.
  • the measured values of the tension measuring devices 20 are also transmitted to the higher-level computer 14. This can by comparing the train measurements with the positions of the previous one Roll stands 1 - 10 determine whether the fraction t3 - t10 by which the rolling force-related Spring deflections are compensated for, is optimally set. Possibly the respective fraction t3 - t10 can be corrected, so the result during of rolling are optimized.
  • the parent computer 14 For each rolled material 11 that has already been rolled, the parent computer 14 stored a record.
  • the record includes on the one hand the roll diameters of the roll stands 1 - 10 as stand parameters, on the other hand the stand settings s3 - s10, t3 - t10 of the roll stands 1 - 10 and thirdly, the material properties of the rolling stock 11.
  • the roll stand 1 - 10 are therefore in particular the roll diameters, the roll gaps s3-s10, the rolling speeds and the fractions t3 - t10 are stored. Furthermore, it is saved what temperature, what initial dimensions and what quality has a rolled rolling stock 11.
  • the data set also includes 11 per rolling stock the final height to be rolled h and the final width to be rolled b.
  • Finally includes the data set also includes the rolling parameters resulting from the rolling of the rolling stock 11 F3 - F10, i.e. the rolling forces F3 - F10 and / or the rolling moments.
  • the temperature of the rolling stock 11 can, for example, by means of a temperature measuring device 22 are determined, which are arranged at the entrance of the rolling mill is.
  • the material properties of the rolling stock 11 can, for example, have a Keyboard 23 serving as an input device in the higher-level computer 14 can be entered.
  • each roll stand is 1 - 10 can be activated individually. You can also set 1-10 for each individual roll stand, which fraction t3 - t10 of its spring force-related spring deflection it compensates for. In addition, it can be specified for each individual scaffold whether it is a monitor control, d. H. a correction of his target roll gap s3 * - s10 * due to the measured heights h and widths b of the measuring devices 15-19 or Not.
  • each of the roll stands 1 - 10 can be used as a sizing stand, as a presizing stand or operated as acceptance scaffolding. This is no longer one Question of the construction of the respective mill stand 1 - 10, but only one question the corresponding setting of the roll gap regulations, which is in seconds can be made.
  • all roll stands 1-10 are of identical design.
  • all roll stands 1 - 10 can be adjusted via hydraulic cylinder units 12. If it is known from the outset that only some of the roll stands 1 - 10 can be considered as sizing and presizing stands, the other rolling stands, e.g. B. the roll stands 9 and 10, but also be made in a different way. At least the presizing and sizing frameworks, at least the last four active roll stands 3 - 6, but should be hydraulically adjustable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
EP99124714A 1999-01-08 1999-12-11 Train de laminage pour laminer des produits en forme de barres, p.e. d'acier en barres ou de fils Withdrawn EP1018376A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19900428A DE19900428A1 (de) 1999-01-08 1999-01-08 Walzstraße zum Walzen von stabförmigem Walzgut, z. B. Stabstahl oder Draht
DE19900428 1999-01-08

Publications (2)

Publication Number Publication Date
EP1018376A2 true EP1018376A2 (fr) 2000-07-12
EP1018376A3 EP1018376A3 (fr) 2002-12-18

Family

ID=7893765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124714A Withdrawn EP1018376A3 (fr) 1999-01-08 1999-12-11 Train de laminage pour laminer des produits en forme de barres, p.e. d'acier en barres ou de fils

Country Status (3)

Country Link
US (1) US6202459B1 (fr)
EP (1) EP1018376A3 (fr)
DE (1) DE19900428A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013921A1 (de) * 2006-03-25 2007-09-27 Sms Meer Gmbh Verfahren zum Walzen eines Drahts und Drahtstraße
EP2014380A1 (fr) * 2007-06-11 2009-01-14 ArcelorMittal France Procédé de laminage d'une bande métallique avec régulation de sa position latérale d'une bande et laminoir adapté
US8459333B2 (en) * 2009-05-06 2013-06-11 Siemens Aktiengesellschaft Method for producing rolling stock rolled in a rolling train of a rolling mill, control and/or regulation device for rolling mill for producing rolled rolling stock, rolling mill for producing rolled rolling stock, machine readable program code and storage medium
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
ITMI20120057A1 (it) * 2012-01-20 2013-07-21 Danieli Off Mecc Gabbia di laminazione con rulli di lavoro sghembi con dispositivo di precarico dei rulli

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1110377A3 (ru) * 1981-09-30 1984-08-23 Мицубиси Денки Кабусики Кайся (Фирма) Устройство дл регулировани геометрических размеров полосы на стане непрерывной прокатки
JPS59156511A (ja) * 1983-02-25 1984-09-05 Mitsubishi Electric Corp 圧延機
JPS61159217A (ja) * 1984-12-29 1986-07-18 Asahi Chem Ind Co Ltd 線材の高速伸線設備
US4607511A (en) * 1985-04-26 1986-08-26 Morgan Construction Company Tension prefinishing with sizing stands
US4860564A (en) * 1987-09-21 1989-08-29 United Engineering, Inc. Method and apparatus for taper rolling control for a rolling mill
JPH02197310A (ja) * 1989-01-24 1990-08-03 Mitsubishi Electric Corp 連続圧延機の制御方法
CN1040073C (zh) * 1989-12-25 1998-10-07 石川岛播磨重工业株式会社 轧机的板厚控制系统
DE4117054A1 (de) * 1991-05-22 1992-11-26 Mannesmann Ag Sizing-geruest gruppe
DE19622825B4 (de) * 1996-06-07 2005-03-31 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Voreinstellung für Kaltwalzreversiergerüst
DE19831481A1 (de) * 1998-07-14 2000-01-20 Schloemann Siemag Ag Walzverfahren für stabförmiges Walzgut, insbesondere Stabstahl oder Draht

Also Published As

Publication number Publication date
DE19900428A1 (de) 2000-07-13
US6202459B1 (en) 2001-03-20
EP1018376A3 (fr) 2002-12-18

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