EP1314491B1 - Mode d'opération d'un laminoir étireur-réducteur et laminoir étireur-réducteur - Google Patents

Mode d'opération d'un laminoir étireur-réducteur et laminoir étireur-réducteur Download PDF

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Publication number
EP1314491B1
EP1314491B1 EP02022590A EP02022590A EP1314491B1 EP 1314491 B1 EP1314491 B1 EP 1314491B1 EP 02022590 A EP02022590 A EP 02022590A EP 02022590 A EP02022590 A EP 02022590A EP 1314491 B1 EP1314491 B1 EP 1314491B1
Authority
EP
European Patent Office
Prior art keywords
roll stand
tube
outlet side
roll
drive
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
EP02022590A
Other languages
German (de)
English (en)
Other versions
EP1314491A1 (fr
Inventor
Hans Joachim Dr. Pehle
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 Group GmbH
Original Assignee
SMS Meer GmbH
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 Meer GmbH filed Critical SMS Meer GmbH
Publication of EP1314491A1 publication Critical patent/EP1314491A1/fr
Application granted granted Critical
Publication of EP1314491B1 publication Critical patent/EP1314491B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • B21B35/025—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills for stretch-reducing of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • 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
    • B21B37/78—Control of tube 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
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/18—Presence of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/20—Track of product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/06—Product speed

Definitions

  • the invention relates to a method for operating a stretch-reducing mill for rolling a tube of finite length, which has at least two roll stands has, which are arranged one behind the other in the conveying direction of the tube, wherein at least two co-operating rollers are arranged in each roll stand are, each over a defined peripheral portion of the tube on this apply and roll it, and at least two drives for driving the Rolling two different roll stands are available. Furthermore concerns the invention an apparatus for performing the method. On A generic method and a generic device are e.g. known from document DE-A 3601693.
  • the pipe to be processed passes a rolling mill, a number of roll stands in succession in the conveying direction of the tube are arranged. Rolls are stored in each roll stand, which are given priority in the rolling process contact the pipe with a defined circumferential section. Overall, several, usually three, rollers act in this way in each roll stand together that the tube is essentially over its entire circumference of is enclosed in the rollers. The pipe is thus reduced in diameter rolled.
  • the rolling mill usually has one group or several groups of rolling stands, whose rollers are driven by a common drive.
  • the drive comprises two motors (basic drive and superimposed drive), whose rotation in a summation gear is added up in such a way that the required increase the rolling speed in rolling stands arranged one behind the other results.
  • Sawing devices are often arranged behind the rolling mill, with which the rolled pipe can be cut to length.
  • the sawing devices are mostly executed as "flying saws", which means that during the sawing process run with the conveying speed of the pipe; d. H. the sawing process can be done while the pipe is being transported.
  • the rolling mill manipulators robots
  • a pusher serve on the cooling bed.
  • the invention is therefore based on the object of providing a stretch-reducing rolling method of the type mentioned at the outset and an associated device with which or with which it is possible to reduce the existing disadvantages or to eliminate them entirely.
  • the proposed active outlet speed control or regulation it can be achieved to prevent the so-called "spit-out effect", which in consequently enables high quality to be achieved in the succession processes; in particular, the cutting tolerances during the sawing process are improved.
  • the proposed method reduces or eliminates the period in which the "spit-out effect" is to be expected (ie during the acceleration phase to be feared), the motor speed of the basic and superimposed drive in the rear scaffolding group, which ensures a constant outlet speed of the Pipe from the rolling mill is ensured.
  • the point in time at which the Conveying direction at the rear end of the pipe is the roll stand or stand group on the outlet side leaves is determined from observation or monitoring of the point in time passing the rear end of the pipe at the outlet end Rolling mill upstream in the conveying direction, taking into account the Rolling speed of the pipe from the monitoring point to the last one Rolling stand.
  • the stretch-reducing mill according to the invention for carrying out the method has at least two roll stands with rollers, at least two drives for driving the rolls of two different roll stands are.
  • means for determining the point in time, to which the rear end of the pipe in the conveying direction is in the conveying direction Leaving mill stand leaves, are available as well as means for control or Regulating the drive of the roll stand on the outlet side so that during the duration a drive of the rollers of the outlet side of a predetermined time interval Roll stand with reduced speed.
  • one is in the conveying direction in front of the roll stand on the outlet side Sensor arranged to detect the time of passing the end of the pipe is suitable. Furthermore, the sensor can send its measured signal to a Control or regulation transmit on the drive of the outlet side Acts on the roll stand.
  • At least the drive of the roll stands last arranged in the conveying direction of the stretch-reducing mill can be designed as an overall superposition drive be, which has a summation gear and two motors. From the drive that drives the mill stands last arranged in the conveying direction can at least three rolling stands are driven.
  • a sawing device is preferred in the conveying direction behind the outlet-side roll stand is arranged; this can have a "flying saw”. Further an automatic manipulator can be arranged behind the last rolling stand his.
  • rollers 4, 5 and 6 or 4 ', 5' and 6 'roll a tube 2 in a stretch-reducing mill The rollers 4, 5 and 6 belong to a first roll stand 3a, while the rolls 4 ', 5' and 6 ' belong to a second roll stand 3b. Both mill stands 3a and 3b belong again to a first group of roll stands of the stretch-reducing mill, such as described below. So that a tube 2 with a finite length L at Pass through the stretch-reducing mill over its entire circumference is rolled evenly, the rolls of two successive roll stands 3a, 3b each rotated by 60 ° around the tube axis, as is shown in FIGS. 1 and 2 is clearly visible.
  • Fig. 3 the structure of a stretch-reducing mill 1 is outlined schematically.
  • Conveying direction R of the tube 2 a number of roll stands 3 are arranged one behind the other. Rollers are arranged in each roll stand, as sketched in FIGS. 1 and 2. Due to the rolling process, the diameter of the Tube 2 somewhat reduced, with one between the individual roll stands 3 Tension for stretching the tube 2 is maintained. Because of the from roll stand to roll stand of decreasing diameter of the rolls the subsequent rollers turn faster and faster.
  • a sawing device 15 is arranged, with which the rolled Pipe 2 is cut to length.
  • the sawing device is called a "flying saw” trained, d. H. the saw moves in conveyance during the sawing process direction R with the ejection speed of the tube to ensure a clean Generate cut.
  • a sensor 10 is arranged at a monitoring point 9 in front of the last group of roll stands 3a "", 3b “", 3c “” and 3d "". As shown in particular in FIG. 4, the sensor 10 detects when the rear end 8 of the tube 2 passes the point 9. The signal detected by the sensor 10 is sent to a controller 11.
  • the control system 11 is supplied by the summation gear 12 "" (or by the motors 13 “” or 14 "") for the drive speeds of the rollers.
  • the point in time t A at which the pipe 2 is ejected from the rolling mill 1, ie when the pipe end 8 leaves the last rolling stand 3d "" can therefore be calculated in a simple manner.
  • a time interval .DELTA.T is also predetermined for the control or regulation, which - as can be seen from FIG. 5 - is defined in such a way that the calculated time t A comes to lie at the end of the time interval .DELTA.T.
  • the control or regulation now (via the motors 13 “" and 14 “") selectively controls or regulates the rotational speed n, in particular the rollers of the last roll stand 3d "" during the time interval .DELTA.T, so that the outlet speed of the pipe increases does not leave the specified tolerance band ⁇ V.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Disintegrating Or Milling (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (11)

  1. Procédé d'exploitation d'un laminoir réducteur à étirage (1) servant au laminage d'un tube (2) à longueur définitive (L),
    qui présente au moins deux cages de laminoir (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...) qui sont disposées l'une derrière l'autre dans le sens de convoyage (R) du tube (2) ;
    étant disposés dans chaque cage de laminoir (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...) au moins deux cylindres coopérants (4, 5, 6, 4', 5', 6') qui, chacun sur une section circonférentielle définie du tube (2), sont en contact avec celui-ci et le laminent, et
    étant disponibles au moins deux commandes (7, 7', 7", 7"', 7"") pour la commande des cylindres (4, 5, 6, 4', 5', 6') de deux cages de laminoir différentes (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...),
    caractérisé en ce que
    le procédé comporte les étapes suivantes :
    a) détermination du moment (tA) où l'extrémité arrière (8) du tube (2) dans le sens de convoyage (R) quitte la dernière cage de laminoir (3d"") côté sortie dans le sens de convoyage (R);
    b) fixation d'un intervalle de temps (ΔT) de durée prédéfinie dans lequel se situe le moment (tA) où l'extrémité arrière (8) du tube (2) dans le sens de convoyage (R) quitte la cage de laminoir (3d"") côté sortie ;
    c) contrôle ou régulation de la commande (7"") de la cage de laminoir côté sortie (3d"") de manière à ce que, pendant la durée de l'intervalle de temps (ΔT), une commande des cylindres de la cage de laminoir côté sortie (3d"") ait lieu avec un régime réduit ainsi que la sortie du tube en conséquence à une vitesse sensiblement constante.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le moment (tA) où l'extrémité arrière (8) du tube (2) dans le sens de convoyage (R) quitte la dernière cage de laminoir (3d"") côté sortie dans le sens de convoyage (R) est déterminé en surveillant le moment de passage de l'extrémité arrière (8) du tube (2) à un endroit (9) situé avant la cage de laminoir côté sortie (3d"") dans le sens de convoyage (R), en tenant compte de la vitesse de laminage du tube (2) depuis le point de surveillance (9) jusqu'à la cage de laminoir côté sortie (3d"").
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    outre le contrôle ou la régulation de la commande (7'''') de la cage de laminoir côté sortie (3d""), a lieu aussi un contrôle ou une régulation des commandes (7"") qui sont associées à des cages de laminoir installées avant (3a"', 3b"', 3c''', 3d''') et dont les cylindres sont en contact avec le tube (2) pendant l'intervalle de temps (ΔT).
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    il est prédéfini pour le contrôle ou la régulation du régime de la commande (7"") de la cage de laminoir côté sortie (3d"") une tolérance (ΔV) dont il ne faut pas s'écarter.
  5. Laminoir réducteur à étirage (1) servant au laminage d'un tube (2) à longueur définitive (L) pour la réalisation du procédé selon l'une quelconque des revendications 1 à 4,
    qui présente au moins deux cages de laminoir (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...) qui sont disposées l'une derrière l'autre dans le sens de convoyage (R) du tube (2) ;
    étant disposés dans chaque cage de laminoir (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...) au moins deux cylindres coopérants (4, 5, 6, 4', 5', 6') qui, chacun sur une section circonférentielle définie du tube (2), sont en contact avec celui-ci et le laminent, et
    étant disponibles au moins deux commandes (7, 7', 7", 7"', 7"") pour la commande des cylindres (4, 5, 6, 4', 5', 6') de deux cages de laminoir différentes (3a, 3b, 3c, 3d, 3a', 3b', 3c', 3d', ...),
    caractérisé en ce que
    il est prévu des moyens (10, 11) de détermination du moment (tA) où l'extrémité arrière (8) du tube (2) dans le sens de convoyage (R) quitte la dernière cage de laminoir (3d"") côté sortie ainsi que des moyens (11) de contrôle ou de régulation de la commande (7"") de la cage de laminoir côté sortie (3d"") de manière à ce que, pendant la durée d'un intervalle de temps prédéfini (ΔT), une commande des cylindres de la cage de laminoir côté sortie (3d"") ait lieu à un régime réduit.
  6. Dispositif selon la revendication 5,
    caractérisé en ce que
    avant la cage de laminoir côté sortie (3d"") est disposé un capteur (10) qui est adapté pour enregistrer le moment de passage de l'extrémité (8) du tube (2).
  7. Dispositif selon la revendication 6,
    caractérisé en ce que
    le capteur (10) transmet son signal mesuré à un système de contrôle ou de régulation (11) qui agit sur la commande (7"") de la cage de laminoir côté sortie (3d"").
  8. Dispositif selon l'une quelconque des revendications 5 à 7,
    caractérisé en ce que
    au moins la commande (7"") des cages de laminoir (3a"', 3b"', 3c"', 3d"') du laminoir réducteur à étirage (1) disposées en dernier dans le sens de convoyage (R) est une commande superposée globale qui présente une transmission à sommateur (12"") ainsi que deux moteurs (13"", 14"").
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    au moins trois cages de laminoir (3a''', 3b"', 3c''', 3d"') sont entraínées par la commande (7"").
  10. Dispositif selon l'une quelconque des revendications 5 à 9,
    caractérisé en ce que
    derrière la cage de laminoir côté sortie (3d"") est disposé un dispositif de sciage (15).
  11. Dispositif selon l'une quelconque des revendications 5 à 10,
    caractérisé en ce que
    derrière la cage de laminoir côté sortie (3d"") est disposé un manipulateur automatique.
EP02022590A 2001-11-24 2002-10-09 Mode d'opération d'un laminoir étireur-réducteur et laminoir étireur-réducteur Expired - Lifetime EP1314491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10157742A DE10157742C1 (de) 2001-11-24 2001-11-24 Verfahren zum Betreiben eines Streckreduzierwalzwerks und Streckreduzierwalzwerk
DE10157742 2001-11-24

Publications (2)

Publication Number Publication Date
EP1314491A1 EP1314491A1 (fr) 2003-05-28
EP1314491B1 true EP1314491B1 (fr) 2004-12-08

Family

ID=7706885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022590A Expired - Lifetime EP1314491B1 (fr) 2001-11-24 2002-10-09 Mode d'opération d'un laminoir étireur-réducteur et laminoir étireur-réducteur

Country Status (7)

Country Link
EP (1) EP1314491B1 (fr)
CN (1) CN1236873C (fr)
AT (1) ATE284279T1 (fr)
DE (2) DE10157742C1 (fr)
ES (1) ES2234970T3 (fr)
RU (1) RU2300433C2 (fr)
UA (1) UA72613C2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103406371B (zh) * 2013-07-04 2015-11-25 中国重型机械研究院股份公司 一种冷轧管机管缝检测控制系统及方法
CN103447300B (zh) * 2013-08-30 2015-08-05 湖北新冶钢特种钢管有限公司 集中传动减径机和减径机对热轧无缝钢管的减径工艺
CN103801558B (zh) * 2014-01-27 2015-12-30 胜利油田康贝石油工程装备有限公司 石油用割缝管的梯型缝加工方法和设备
DE102017220750A1 (de) * 2017-11-21 2019-05-23 Sms Group Gmbh Vorrichtung zur Steuerung eines Streckreduzierwalzwerks
DE102018207908A1 (de) * 2018-05-18 2019-11-21 Sms Group Gmbh Streckreduzierungswalzwerk mit verbesserter Durchmesser- und Wanddickentoleranz
CN109047335A (zh) * 2018-06-11 2018-12-21 黑龙江建龙化工有限公司 钢管尺寸外径控制方法
DE102018217378B3 (de) * 2018-10-11 2020-03-26 Sms Group Gmbh Wanddickenkontrolle beim Streckreduzieren von Rohren
CN109877160B (zh) * 2019-04-09 2020-03-31 浙江鼎尚不锈钢有限公司 高精度无缝钢管的四辊减径机
CN112872044B (zh) * 2021-01-13 2023-02-17 首钢京唐钢铁联合有限责任公司 一种控制轧制节奏的方法及装置
CN114515762B (zh) * 2022-01-28 2024-01-26 广西钢铁集团有限公司 高速线材圆钢尾部尺寸控制方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601693A1 (de) * 1986-01-17 1987-07-23 Mannesmann Ag Walzstrasse zum streckreduzieren von rohren
DE4446659C1 (de) * 1994-12-16 1996-07-25 Mannesmann Ag Arbeitsverfahren zur Herstellung von Rohren in einem Streckreduzierwalzwerk

Also Published As

Publication number Publication date
ATE284279T1 (de) 2004-12-15
DE10157742C1 (de) 2003-06-18
ES2234970T3 (es) 2005-07-01
RU2300433C2 (ru) 2007-06-10
UA72613C2 (uk) 2005-03-15
CN1236873C (zh) 2006-01-18
DE50201715D1 (de) 2005-01-13
EP1314491A1 (fr) 2003-05-28
CN1422709A (zh) 2003-06-11

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