EP0849010B1 - Procédé et dispositif pour laminer à froid des tubes et des barres - Google Patents

Procédé et dispositif pour laminer à froid des tubes et des barres Download PDF

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Publication number
EP0849010B1
EP0849010B1 EP97250369A EP97250369A EP0849010B1 EP 0849010 B1 EP0849010 B1 EP 0849010B1 EP 97250369 A EP97250369 A EP 97250369A EP 97250369 A EP97250369 A EP 97250369A EP 0849010 B1 EP0849010 B1 EP 0849010B1
Authority
EP
European Patent Office
Prior art keywords
run
transport mechanism
rolled
transport
out side
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
EP97250369A
Other languages
German (de)
English (en)
Other versions
EP0849010A1 (fr
Inventor
Horst Ing. Stinnertz (Grad)
Jürgen Dipl.-Ing. Schmidt
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 EP0849010A1 publication Critical patent/EP0849010A1/fr
Application granted granted Critical
Publication of EP0849010B1 publication Critical patent/EP0849010B1/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
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/06—Devices for revolving work between the steps
    • B21B21/065—Devices for revolving work between the steps for reciprocating stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0028—Drawing the rolled product
    • 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
    • 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
    • B21B21/04—Pilgrim-step feeding mechanisms
    • B21B21/045—Pilgrim-step feeding mechanisms for reciprocating stands

Definitions

  • the invention relates to a method for cold crawlage, in particular of extreme thin-walled tubes and rods of small diameter, on one Cold pilger rolling mill with a reciprocating mill stand.
  • rotation and feed are fixed over a stationary one Rotary feed head with rotating chains causes, the chain links the Enclose the tube blank and transport it in the rolling direction using friction.
  • the Rotary feed head is driven by a planetary gear and thus causes simultaneous rotation of the tube blank.
  • the object of the present invention is based on the described state to propose to the technology a method for cold mushrooms with the extreme thin-walled, especially small pipes or rods of small diameter are rolled can be without the risk of buckling or rolling.
  • the invention provides for the rolling stock to be taken on the outlet side behind the roll stand and pull through the rolling zone. In this way, the critical pressure and / or Buckling stresses are avoided in the rolling stock and thus also with it caused disturbances in the rolling process.
  • the transport device arranged on the outlet side is assigned to the inlet-side rotary and feed drive, at least temporarily takes over the feed and rotation of the piled rolling stock and its movement sequence on the movement sequence of the outlet side Transport device is coordinated.
  • the rolling stock can initially by inlet-side device in the forming zone of the roll stand and be rolled on, after the beginning of the piled rolling stock has reached the outlet-side transport device and is detected there on its circumference, the rotary feed drive arranged on the inlet side can be switched so that only the outlet-side transport device the forward transport of the rolling stock takes over.
  • the transport device arranged on the outlet side also includes a little compared to the outlet speed of the piled rolling stock increased transport speed can be operated from the roll stand. That means, that a tensile force is always exerted on the piled rolling stock, so that with Safety avoided the critical compressive and / or buckling stresses in the rolling stock become. Furthermore, tensile stress can be applied to the rolling stock from the outside increase the formability of the rolling stock.
  • the turning and Feed drive independent of the outlet-side transport device can be switched off, so that the different states during rolling be recorded.
  • rolling the rolling stock it is only necessary that to operate the inlet-side rotating and feeding device. The moment that piled rolling stock has left the roll stand and into the outlet side Transport device was introduced, the forward transport of the Take over the rolling stock so that the inlet-side rotary feed drive is switched off can be.
  • both the rotary feed drive as well as the outlet-side transport device together switch, the tuning of the drives shown in claim 1 is to be observed.
  • At least the discharge-side transport device as a fixed rotary feed head with rotating Chains is formed, the chain links enclose the tube blank and by means of Transport friction in the rolling direction.
  • Such devices are known per se; So far they have been used as a rotary feed drive in front of the roll stand can replace the inlet chuck of conventional cold pilger rolling mills.
  • the Rolling stock beginning with the finished diameter of the piled rolling stock appropriate diameter taper is provided from the inlet side inserted through the roll stand into the transport device becomes.
  • Such a threading procedure is particularly necessary if only an outlet-side transport device with the features of the invention is used. This case is applicable if it is very long or almost endlessly long Poles or slabs are to be rolled. In this case, the rolling stock only has to once in the outlet-side transport device and can then transported almost endlessly and thereby "pulled" through the forming zone become.
  • the narrowing of the diameter for threading the rolling stock can be achieved, for example, by Pulling the beginning of the rolling stock can be produced in a pulling device; they are too Devices conceivable, such as those used to form drawing bars in front of drawing machines are known.
  • the diameter taper can also are formed by a rod which is coaxial at the front end of the rolling stock is attached.
  • the present invention can advantageously ensure that when rolling Blanks introduced immediately one after the other do not wedge or roll into each other the pipe ends appear; because the features of the invention ensure that Always keep a small distance between two successive holes e.g. 20 mm at the joint of two loops.
  • very thin-walled tubes can with a wall thickness-to-diameter ratio of ⁇ 1:40, which is has not been possible so far or has been difficult
  • the invention increases process reliability of the cold mitage process and avoids interference.
  • the invention is equally for pipes like also applicable for wires and small profiles.
  • the drawing figure shows a cold pilger mill 1, which, like the double arrow indicated above the cold pilger roll stand, oscillating back and forth.
  • the Oscillating movement of the cold pilger stand 1 is carried out by an underlying (Not shown) crank drive generated.
  • the roller pair 2 rotates synchronously the movement of the roll stand 1, driven by pinions on the roll axes, the correspond with fixed racks.
  • the rollers are calibrated so that the rolling stock is in the two dead spots of the stand is released in each case.
  • the rotary and pushes to these release zones Feed drive 3 with 6 designated in the direction of arrow 7 and rotates them at the same time by a predetermined angular amount.
  • In the Longitudinal transport movement of the transport device on the outlet side is the The course of the stretching of the rolling stock during rolling must be taken into account.
  • the Subsequent second blank 5 is placed at a distance of approximately 20 mm in the rotary feed device 3 inserted so that the ends of successive tubes themselves do not touch, not even in the reduction area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Claims (6)

  1. Procédé pour laminer à pas de pèlerin à froid, en particulier des tubes à paroi extrêmement mince et des barres de petit diamètre sur un laminoir à pas de pèlerin à froid, comportant des cylindres calibrés (2) s'amincissant sur leur périphérie et agencés dans une cage de laminoir (1) déplacée en va-et-vient, dans lesquels la matière laminée (5) est tournée dans au moins un des deux points morts de la cage de laminoir et est transportée vers l'avant, un dispositif de transport (4) agencé du côté de sortie directement derrière la cage de laminoir (1) étant prévu pour faire tourner et transporter en avant la matière laminée, qui saisit la matière laminée à pas de pèlerin (5) à sa périphérie et, au dispositif de transport (4) agencé du côté de sortie, il est associé un dispositif de rotation et d'avance (3) agencé du côté d'entrée qui permet au moins temporairement l'avance et la rotation de la matière laminée à pas de pèlerin et dont l'allure du déplacement est accordée à l'allure du déplacement du dispositif de transport (4) du côté de sortie, tout d'abord la vitesse de transport de la matière laminée sortant derrière la cage de laminoir (1) pour un dispositif de transport (4) du côté de sortie ouvert étant mesurée pour régler la vitesse de transport du dispositif de transport agencé du côté de sortie, et le résultat étant transmis au réglage de vitesse de l'entraínement du dispositif de transport, la vitesse du dispositif de transport (4) agencé du côté de sortie étant augmentée de 3 % à 10 % par rapport à la vitesse de transport de l'entraínement d'avance (3) du côté d'entrée, avant que le dispositif de transport soit fermé contre la matière laminée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que le dispositif de rotation et d'avance (3) du côté d'entrée peut être mis en service et hors service indépendamment du dispositif de transport (4) du côté de sortie.
  3. Procédé selon la revendication 1,
    caractérisé en ce qu'au moins le dispositif de transport (4) du côté de sortie est réalisé comme tête d'avance rotative stationnaire à chaínes tournantes, dont les maillons de chaíne entourent la matière laminée (loupe 5 ou 6) et la transportent par frottement dans la direction de laminage.
  4. Procédé selon une des revendications précédentes,
    caractérisé en ce que le début de la matière laminée est muni d'une diminution de diamètre correspondant au diamètre fini de la matière laminée à pas de pèlerin, qui, à partir du côté d'entrée, est introduite à travers la cage de laminoir dans la direction de transport.
  5. Procédé selon la revendication 4,
    caractérisé en ce que la diminution de diamètre est obtenue par étirage du début de la matière laminée dans un dispositif d'étirage.
  6. Procédé selon la revendication 4,
    caractérisé en ce que la diminution de diamètre est formée par une barre qui est fixée coaxialement à l'extrémité avant de la matière laminée.
EP97250369A 1996-12-17 1997-12-10 Procédé et dispositif pour laminer à froid des tubes et des barres Expired - Lifetime EP0849010B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19654489 1996-12-17
DE19654489 1996-12-17

Publications (2)

Publication Number Publication Date
EP0849010A1 EP0849010A1 (fr) 1998-06-24
EP0849010B1 true EP0849010B1 (fr) 2002-04-17

Family

ID=7816299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97250369A Expired - Lifetime EP0849010B1 (fr) 1996-12-17 1997-12-10 Procédé et dispositif pour laminer à froid des tubes et des barres

Country Status (4)

Country Link
US (1) US5921128A (fr)
EP (1) EP0849010B1 (fr)
DE (1) DE59707038D1 (fr)
RU (1) RU2210444C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860710A1 (de) * 1998-12-23 2000-06-29 Sms Demag Ag Verfahren zum Regeln eines hydraulischen Dreh- und Vorschubantriebes für ein Kaltpilgerwalzwerk
DE10105827B4 (de) * 2001-02-07 2005-11-03 "Alwag" Tunnelausbau Gesellschaft Mbh Vorrichtung zum spanlosen Umformen von langgestreckten Werkstücken
DE10248136B3 (de) * 2002-10-12 2004-05-06 Sms Meer Gmbh Verfahren und Vorrichtung zum Herstellen eines sich längserstreckenden Körpers
US9016178B2 (en) 2010-01-12 2015-04-28 Lewis W. Wadsworth Apparatus and method for cutting tubular members
RU2545935C2 (ru) * 2013-04-15 2015-04-10 Открытое акционерное общество "Челябинский трубопрокатный завод" Установка для производства конусных длинномерных полых металлических изделий

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700857C (de) 1937-03-31 1941-01-02 Kronprinz Akt Ges Fuer Metalli Vorrichtung zur Herbeifuehrung des schrittweisen Vorschubes in Pilgerwalzwerken
DE843535C (de) * 1951-04-21 1952-07-10 Westdeutsche Mannesmannroehren Vorrichtung zum Anspitzen von Hohlbloecken
US3668916A (en) * 1970-01-19 1972-06-13 Wean Ind Inc Drawing of metal tubing
PL87519B1 (fr) * 1973-05-30 1976-07-31
SU863025A1 (ru) * 1977-06-20 1981-09-15 За витель Юшкевич и Л.И. Фил чкин-а Способ холодной прокатки труб
SU778834A1 (ru) * 1978-11-14 1980-11-15 Уральский научно-исследовательский институт трубной промышленности Способ подготовки гильзы к пилигримовой прокатке труб
JPS6384704A (ja) * 1986-09-29 1988-04-15 Manabu Kiuchi コ−ルドピルガ−圧延方法及び装置
US4819471A (en) * 1986-10-31 1989-04-11 Westinghouse Electric Corp. Pilger die for tubing production
DE3709008C1 (de) * 1987-03-19 1988-02-25 Mannesmann Ag Dreh- und Vorschubeinrichtung zum absatzweisen Walzen langgestreckter Werkstuecke auf einem Kaltpilgerwalzwerk
DE3717165C1 (en) * 1987-03-26 1988-03-31 Mannesmann Ag Method for the production of tubes by the cold reciprocating rolling method
ATE162742T1 (de) * 1993-09-29 1998-02-15 Danieli Off Mecc Maschine zum ziehen von stangen
DE19609291C2 (de) * 1995-03-09 2003-06-12 Walter Wolf Verfahren zum Walzen von Rohren oder Stangen

Also Published As

Publication number Publication date
US5921128A (en) 1999-07-13
RU2210444C2 (ru) 2003-08-20
DE59707038D1 (de) 2002-05-23
EP0849010A1 (fr) 1998-06-24

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