EP0908245B1 - Méthode et dispositif pour fabriquer les tubes par laminage à pas de pélerin froid - Google Patents

Méthode et dispositif pour fabriquer les tubes par laminage à pas de pélerin froid Download PDF

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Publication number
EP0908245B1
EP0908245B1 EP98250040A EP98250040A EP0908245B1 EP 0908245 B1 EP0908245 B1 EP 0908245B1 EP 98250040 A EP98250040 A EP 98250040A EP 98250040 A EP98250040 A EP 98250040A EP 0908245 B1 EP0908245 B1 EP 0908245B1
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EP
European Patent Office
Prior art keywords
stand
rolling
roll
stands
rollers
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
EP98250040A
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German (de)
English (en)
Other versions
EP0908245A1 (fr
Inventor
Horst Ing. Grad. Stinnertz
Michael Dr. Ing. Baensch
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
Priority claimed from DE19750787A external-priority patent/DE19750787C1/de
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0908245A1 publication Critical patent/EP0908245A1/fr
Application granted granted Critical
Publication of EP0908245B1 publication Critical patent/EP0908245B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand

Definitions

  • the invention relates to methods and a device for producing pipes, preferably made of high-strength steels or special alloys according to Cold pilger step method with two at least in the rolling direction by means of crank drives at times counter-rotating roll stands with tapering calibrated rollers, driven by racks via pinions, with alternating Roll the direction of rotation over the rolling stock.
  • crank drives at times counter-rotating roll stands with tapering calibrated rollers, driven by racks via pinions, with alternating Roll the direction of rotation over the rolling stock.
  • tandem cold pilger rolling mills have also been tried to be used in which two pairs of rollers are combined in a stand are.
  • the higher scaffolding weight with a low number of strokes is all in one unfavorable price-performance ratio noticeable, roll both sets of rolls at the same time the advanced tube volume, the second set of rollers the rolled tube length of the first roll set during the feed is supplied, which can lead to compression problems in the pipe with performance and quality losses .
  • crank drives shows roll stands that can be reciprocated at times in opposite directions, the rollers of which roll over Racks are driven with alternating directions of rotation.
  • the well-known The arrangement provides for the blank in the first roll stand exclusively and without Reduce the diameter of the dome and then the wall thickness in the second roll stand reduce the pipe over a mandrel.
  • the arrangement of the crank drives is like this chosen that the movements of the two rolling stands together with the Movement of the dome rod and gripping of the rollers feed the tube enable in a certain way.
  • the object of the present invention is cold pilger rolling and a Device for the production of pipes, in particular from high-strength steels or To create special alloys according to the cold pilger step process, in which a significant increase in rolling performance compared to conventional rolling mills with the least possible additional mechanical effort and without loss of quality becomes possible.
  • the methods according to the invention enable extremely high performance firstly, that in the first roll stand only forming work and none Smoothing is done, which significantly extends the Reduction caliber is usable and no performance reducing Tolerance requirements have to be taken into account while in the second mill stand beside the smoothing work is carried out a significant additional forming work.
  • the second mill stand be 90 to 150 degrees Crank angle is offset from the first roll stand and that its rollers are rotationally driven by stationary racks and that the The center distance of the rolls remains constant during rolling.
  • a device for performing the method is defined in claim 4.
  • crank drive angles to each other allows turning and advancing the slug at favorable times and prevents together with further features of the invention that there is a material jam between the Roll stands comes while the main forming work is on the first roll stand is performed.
  • the opposite direction of rotation of the two cranks allows one favorable balance of mass forces of the first harmonics, making it high Strokes possible compared to a conventional single cold pilger rolling mill do not have to be reduced because the inertia forces due to the chosen construction do not rise.
  • crank mechanism The mechanical engineering effort for such a crank mechanism is only insignificant higher than for driving a single scaffold.
  • the arrangement of the crank drives with vertical axes of rotation dispenses with deep foundations for the Mass balance.
  • the distance between the two roll stands can be e.g. be minimized if the Push rods of each roll stand in superimposed levels or the two roll stands are arranged above the crank mechanism in such a way that the pivot points for the push rods on the two are furthest apart distant parts of the roll stand.
  • a common crank mechanism with rotating counterweights on the two opposing crank bends is preferably provided for both roll stands, which counterbalances the first order of the inertial forces, while an at least partial compensation of the inertial forces can take place through the interaction of the stand masses.
  • a phase angle of 90 ° is optimal from the point of view of the balancing of mass forces, because under this condition the second order mass forces also cancel each other out.
  • difficulties in rolling technology cannot be ruled out with such an arrangement.
  • the cranks are driven in the same direction of rotation and, with counterweights on the cranks, some of the mass forces of the first order are balanced. The remaining part of this mass force component is compensated not at all or with counterweights on an intermediate shaft connecting the two cranks via gear wheels, which rotates at the crank speed but in the opposite direction.
  • the drive of the second roll stand then can preferably be made weaker than that of the first roll stand. This makes the drive of the second scaffolding smaller, lighter and cheaper than that of the first roll stand. A change in the phase angle between the two Scaffolding is easy to implement with two separate crank drives.
  • the two roll stands in one housing to accommodate driving cranks, but to drive them by separate motors, so that the change in the phase angle of the two cranks is easily possible.
  • the first order mass balance then requires two rotating weights each crank, such that the greater weight is firmly connected to the crank and the smaller one in relation to the crank e.g. than rotatable around the middle of the crank Eccentric is adjustable.
  • At least the racks of the second roll stand with a displacement device for adjusting the Racks are provided in their longitudinal directions.
  • At least the rollers are excited to adjust the center distance to provide a cyclically usable wedge mechanism of the second roll stand.
  • this thin-walled tube is completed by the second rolling stand. Since the tube can be fed to the second roll stand in any way in this case, the rotation and feed movement can be determined independently of the phase position of the two roll stands only according to the requirements of the first roll stand, for example also as turning and advancing at both dead centers. With these thin-walled products, the cold pilger process also allows the tube to be turned and pushed forward, even though the rollers still touch the tube on the smooth caliber. This means that the caliber of the rolls of the second roll stand can also be extended to the outlet dead center of this roll stand.
  • the rolling mill can be manufactured with a good price-performance ratio become.
  • the rolling mill can be operated with high stroke rates compared to a normal single rolling mill does not have to be reduced because the Mass forces do not increase due to the scaffolding and crank mechanism arrangement.
  • the mechanical engineering effort for the crank drive is only slightly higher than that for the drive of just one scaffold.
  • the Caliber length of the first stand can be fully used for the forming, since a smoothing caliber is not required here and tolerance requirements are not taken into account can stay.
  • Table 1 also shows a tabular comparison of two exemplary embodiments
  • the two roll stands 1 and 2 are so by a common crank mechanism 3 driven that the mass forces of the first order of the two roll stands completely compensate.
  • the counter-rotating counterweights 4 and 5 (FIG. 2) only the rotary ones are the same in this exemplary embodiment Imbalance from cranks and push rods.
  • Each roll stand 1 and 2 is only by one of the push rods 11 and 12th driven, which move in superimposed levels. This will thereby causes the articulation point to the first roll stand 1 under the same and to the second roll stand 2 is provided in front of this. Enter ET in the dead center both sets of rolls 7 and 8 free the rolling stock for turning and advancing The rolling outlet dead center AT is at most short for an additional turning Approved.
  • the illustrated rolling mill which is about twice the performance of a conventional rolling mill, is characterized in that the entire turning, Feed and loading device remains unchanged that the oscillating Compensating masses of a conventional rolling mill with a second rolling stand are replaced, and that only the additional roller axes with their Rack and pinion drives are added.
  • Example 1 describes a classic stainless steel rolling for heat exchanger tubes
  • Example 2 explains the exploitation of the great ductility of austenitic steels for one greater cross-sectional reduction.
  • the 5.6 mm advance in the first stand occurs when the 1st stand is in the Infeed and the 2nd scaffold are in the dead center; d. H. the forming in the 1st Scaffolding essentially takes place on its forward stroke when the 2nd scaffolding is on the Return stroke is located. The latter will be in its exit dead center area Feed volume 20 x 1.5 with 5.6 mm length added, which during its Return stroke extended to 20.7 mm.
  • the second scaffold is given before its Vorhubes fed a feed of 20.7 mm, which at 1.85 times the extension in 2. Roll out the stand to 38 mm.
  • Example 2 shows the rolling 33 x 3.5 to 16 x 1 from “Example 1" for the conventional rolling mill, but 33 x 3.5 to 12 x 1 for the rolling mill according to the invention. Even here, the output in m doubles / h and the throughput in kg / h increases by almost 50% despite the lower meter weight.
  • example 1 Conventional rolling mill Rolling mill according to the invention same aspect ratio 1. Scaffolding 2.Gerüst Luppen outer diam. mm 33 33 20 Luppen Wall mm 3.5 3.5 1.5 External pipe diameter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Laminated Bodies (AREA)

Claims (8)

  1. Procédé pour fabriquer des tubes, avantageusement en alliages spéciaux ou aciers à haute résistance selon le procédé à pas de pèlerin à froid ayant deux cages de laminoir (1, 2) déplaçables de façon opposée en va-et-vient au moins temporairement dans la direction de laminage au moyen de mécanismes à bielle et manivelle (3), ayant des cylindres calibrés en s'amincissant (7, 8) qui roulent sur la matière laminée avec des sens de rotation alternatifs, sur la première cage de laminoir (1), la partie principale et, sur la seconde cage de laminoir (2), une plus faible partie du travail de déformation et du travail de lissage supplémentaire étant effectuées, le laminage par réduction étant réalisé dans les deux cages de laminoir (1, 2) par l'intermédiaire d'un mandrin adapté au calibre des cylindres, et le décalage angulaire des mécanismes à bielle et manivelle (3) étant choisi de sorte que la zone de déformation de la première cage (1) ne coïncide pas dans le temps avec la zone de déformation de la seconde cage (2),
    caractérisé en ce que la seconde cage de laminoir (2) est agencée de façon décalée de 90 à 150° d'angle de manivelle par rapport à la première cage de laminoir (1), en ce que ses cylindres (8) sont entraínés en rotation par des crémaillères fixes (10), et en ce que la distance axiale des cylindres (8) pendant le laminage demeure constante.
  2. Procédé pour fabriquer des tubes, avantageusement en alliages spéciaux ou aciers à haute résistance selon le procédé à pas de pèlerin à froid ayant deux cages de laminoir (1, 2) déplaçables de façon opposée en va-et-vient au moins temporairement dans la direction de laminage au moyen de mécanismes à bielle et manivelle (3), ayant des cylindres calibrés en s'amincissant (7, 8) qui roulent sur la matière laminée avec des sens de rotation alternatifs, sur la première cage de laminoir (1), la partie principale et, sur la seconde cage de laminoir (2), une plus faible partie du travail de déformation et du travail de lissage supplémentaire étant effectuées, le laminage par réduction étant réalisé dans les deux cages de laminoir (1, 2) par l'intermédiaire d'un mandrin adapté au calibre des cylindres, et le décalage angulaire des mécanismes à bielle et manivelle (3) étant choisi de sorte que la zone de déformation de la première cage (1) ne coïncide pas dans le temps avec la zone de déformation de la seconde cage (2),
    caractérisé en ce que les cylindres (7, 8) sont entraínés par des crémaillères par l'intermédiaire de pignons, en ce que la seconde cage de laminoir (2) est agencée de façon décalée par rapport à la première cage (1) de 180° d'angle de manivelle et, sur la course de retour sans réduction, libère une fente annulaire correspondant à l'apport de matière à partir de la première cage (1) entre la matière laminée et le calibre des cylindres, dans laquelle le tube déformé dans la première cage de laminoir (1) est introduit, et en ce que la distance axiale des cylindres (7, 8) est modifiée de façon cyclique pendant le processus de laminage.
  3. Procédé pour fabriquer des tubes selon la revendication 1,
    caractérisé en ce que les crémaillères (10) sont déplaçables horizontalement de façon cyclique pour l'entraínement en rotation des cylindres.
  4. Dispositif pour fabriquer des tubes, avantageusement en alliages spéciaux ou aciers à haute résistance selon le procédé à pas de pèlerin à froid ayant deux cages de laminoir (1, 2) déplaçables de façon opposée en va-et-vient dans un guide au moins de façon temporaire dans la direction de laminage au moyen de mécanismes à bielle et manivelle (3), ayant des cylindres calibrés en s'amincissant, qui roulent sur la matière laminée avec des sens de rotation alternatifs, la première cage de laminoir (1) étant réalisée comme cage ébaucheuse ayant des cylindres (7) présentant exclusivement un calibre de travail, les cylindres (8) de la seconde cage de laminoir (2) présentant des calibres de travail et de lissage, les cylindres (7, 8) des deux cages de laminoir (1, 2) coopérant avec des mandrins de laminage calibrés de façon correspondante et les mécanismes à bielle et manivelle (3) angulairement décalés l'un par rapport à l'autre, pour l'entraínement des cages de laminoir (1, 2), étant réalisés par des barres de poussée (11, 12) individuelles, associées à chaque cage de laminoir (1, 2), ayant des axes de rotation verticaux,
    caractérisé en ce que les cylindres (7, 8) sont entraínés par des crémaillères par l'intermédiaire de pignons, et en ce que, pour régler l'écartement axial au moins des cylindres (7, 8) de la seconde cage de laminoir (2), il est prévu un mécanisme à coin réglable de façon cyclique, ou en ce qu'au moins les crémaillères (10) de la seconde cage de laminoir (2) sont munies d'un dispositif de déplacement (9) pour régler les crémaillères (10) concernant leurs directions d'extension longitudinales.
  5. Dispositif pour fabriquer des tubes selon la revendication 4, caractérisé en ce que les barres de poussée (11, 12) de chaque cage de laminoir (1, 2) tournent dans des plans superposés.
  6. Dispositif pour fabriquer des tubes selon les revendications 4 et 5,
    caractérisé en ce que, pour les deux cages de laminoir (1, 2), il est prévu un mécanisme à bielle et manivelle commun (3) ayant des bielles opposées et des poids d'équilibrage rotatifs (4, 5) sur les deux coudes de manivelle, les contrepoids rotatifs compensant totalement les forces massiques de premier ordre et une compensation partielle des forces massiques d'ordre supérieur étant effectuée par le jeu des masses des cages.
  7. Dispositif pour fabriquer des tubes selon les revendications 4 et 5,
    caractérisé en ce que les manivelles sont entraínées dans le même sens de rotation et, par des contrepoids sur les manivelles, à chaque fois une partie des forces massiques de premier ordre est compensée, et la partie restante de ces composantes de forces massiques n'est du tout compensée ou par des contrepoids sur un arbre intermédiaire reliant les deux manivelles par l'intermédiaire de roues dentées, qui tourne à la vitesse de rotation des manivelles mais dans le sens de rotation opposé.
  8. Dispositif pour fabriquer des tubes selon la revendication 4, caractérisé en ce que, à chaque cage de laminoir (1 et 2), il est associé un mécanisme à bielle et manivelle propre avec compensation des masses, l'entraínement de la seconde cage de laminoir (2) étant avantageusement plus faible que celui de la première cage de laminoir (1).
EP98250040A 1997-10-08 1998-02-02 Méthode et dispositif pour fabriquer les tubes par laminage à pas de pélerin froid Expired - Lifetime EP0908245B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19745603 1997-10-08
DE19745603 1997-10-08
DE19750787 1997-11-06
DE19750787A DE19750787C1 (de) 1997-10-08 1997-11-06 Verfahren und Vorrichtung zur Herstellung von Rohren nach dem Kaltpilgerschrittverfahren

Publications (2)

Publication Number Publication Date
EP0908245A1 EP0908245A1 (fr) 1999-04-14
EP0908245B1 true EP0908245B1 (fr) 2002-05-15

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EP98250040A Expired - Lifetime EP0908245B1 (fr) 1997-10-08 1998-02-02 Méthode et dispositif pour fabriquer les tubes par laminage à pas de pélerin froid

Country Status (6)

Country Link
US (1) US5916320A (fr)
EP (1) EP0908245B1 (fr)
AT (1) ATE217550T1 (fr)
CA (1) CA2234218C (fr)
ES (1) ES2173546T3 (fr)
RU (1) RU2205075C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241612B3 (de) * 2002-09-07 2004-01-08 Sms Meer Gmbh Antriebssystem für ein Kaltpilgerwalzwerk
US6997026B2 (en) * 2002-12-12 2006-02-14 Engel Industries, Inc. Quick change metal stud to hemmed track roll forming system
JP5276168B2 (ja) * 2008-08-01 2013-08-28 ヴァヴィット エッセ エッレ エッレ 一定の長さに管の外形を加工する方法
DE102009007465B3 (de) * 2009-02-04 2010-09-30 Sms Meer Gmbh Antriebssystem für ein Walzwerk, insbesondere für ein Kaltpilgerwalzwerk
DE102011004203A1 (de) * 2011-02-16 2012-08-16 Sandvik Materials Technology Deutschland Gmbh Vorrichtung mit einer Mehrzahl von Kaltwalzanlagen
DE102016106035A1 (de) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Herstellen eines Rohres
DE102016106034A1 (de) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Herstellen eines Rohrs

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Publication number Priority date Publication date Assignee Title
DE604909C (de) * 1932-01-01 1934-11-02 Hirsch Verfahren zum Auswalzen von Rohren auf Pilgerschrittwalzwerken
DE6752062U (de) * 1968-04-09 1969-02-20 Mannesmann Meer Ag Zahnstangenanstellung an kaltpilgerwalzwerken
US3650138A (en) * 1968-09-28 1972-03-21 Giuseppe Persico Multiple tube-rolling pilger mills
SU505453A1 (ru) * 1974-12-13 1976-03-05 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский И Конструкторско-Технологический Институт Трубной Промышленности Инструмент роликового стана холодной прокатки труб
DE2528850C3 (de) * 1975-06-27 1979-09-20 Oskar Aleksandrovitsch Pljazkovskij Pilgerschrittwalzwerk zum Rohrkaltwalzen
US4052898A (en) * 1976-09-13 1977-10-11 Wean United, Inc. Crank drive system for cold pilger mills drive or the like
JPS5412256A (en) * 1977-06-28 1979-01-29 Nippon Telegr & Teleph Corp <Ntt> Detector for electron beam
DE3010526A1 (de) * 1980-03-17 1981-09-24 Mannesmann AG, 4000 Düsseldorf Pilgerschrittwalzwerk
FR2530503A1 (fr) * 1982-07-21 1984-01-27 Vallourec Procede de laminage a froid de tubes au moyen d'un laminoir a pas de pelerin et dispositif pour la mise en oeuvre du procede
JPS63260607A (ja) * 1987-04-16 1988-10-27 Sumitomo Heavy Ind Ltd ピルガ−式圧延機の慣性力バランス装置
DE4124691C1 (fr) * 1991-07-22 1992-02-27 Mannesmann Ag, 4000 Duesseldorf, De
DE4234394C1 (de) * 1992-10-07 1993-11-04 Mannesmann Ag Vorschubgetriebe fuer ein kaltpilgerwalzwerk
US5351515A (en) * 1993-01-19 1994-10-04 Sandvik Special Metals Corporation Apparatus and method for reducing the diameter of a cylindrical workpiece
DE4336422C2 (de) * 1993-10-20 1996-10-24 Mannesmann Ag Kurbeltrieb für ein Kaltpilgerwalzwerk

Also Published As

Publication number Publication date
CA2234218A1 (fr) 1999-04-08
EP0908245A1 (fr) 1999-04-14
US5916320A (en) 1999-06-29
CA2234218C (fr) 2006-05-30
ES2173546T3 (es) 2002-10-16
RU2205075C2 (ru) 2003-05-27
ATE217550T1 (de) 2002-06-15

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