EP0849010A1 - Verfahren und Vorrichtung zum Kaltwalzen von Rohren und Stangen - Google Patents
Verfahren und Vorrichtung zum Kaltwalzen von Rohren und Stangen Download PDFInfo
- Publication number
- EP0849010A1 EP0849010A1 EP97250369A EP97250369A EP0849010A1 EP 0849010 A1 EP0849010 A1 EP 0849010A1 EP 97250369 A EP97250369 A EP 97250369A EP 97250369 A EP97250369 A EP 97250369A EP 0849010 A1 EP0849010 A1 EP 0849010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling stock
- transport
- transport device
- rolling
- rods
- 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.)
- Granted
Links
Images
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 device for cold crawlage, in particular of extreme thin-walled tubes and rods of small diameter, on one Cold pilger rolling mill with arranged in a reciprocating roll stand and tapered calibrated rollers in their circumference, in which the rolling stock rotated and forward at least in one of the two roll stand dead centers is transported and a method for operating this device.
- 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 a device and a method for operating this device to propose with the extremely thin-walled particularly small pipes or Small diameter rods can be rolled without the risk of Buckling or rollover occurs.
- the invention proposes that for turning and Forward transport of the rolling stock on the exit side immediately behind the Roll stand arranged transport device is provided, which is the mit Rolld goods recorded on its circumference.
- 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 compressive and / or buckling stresses in the rolling stock are avoided, and thus also with them caused disturbances in the rolling process.
- a transport device arranged on the outlet side a rotating and Feed drive is assigned, which at least temporarily the feed and the Rotation of the piled rolling stock takes over and its movement on the Movement sequence of the outlet-side transport device is coordinated.
- the rolling stock can first of all 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 outlet side arranged transport device with a slightly opposite Increase the discharge speed of the piled rolling stock from the rolling stand Transport speed is operable. This means that there is always a pull on the piled rolling stock is exercised, so that the critical pressure and / or Buckling stresses in the rolling stock can be avoided. Furthermore, from the outside the tensile stress applied to the rolling stock the formability of the rolling stock increase.
- the inlet-side rotary and feed drive independent of the outlet-side Transport device can be switched on and off, so that the different States are detected during rolling.
- rolling the rolling stock it is only required to operate the inlet-side rotating and feeding device. In the moment when the piled rolling stock has left the rolling stand and into the discharge-side transport device was introduced, this can be the Forward transport of the rolling stock take over, so that the inlet-side rotary feed drive can be switched off. It is in other operating states conceivable, both the rotary feed drive and the outlet side To switch the transport device together, wherein in claim 3 The coordination of the drives shown must be observed.
- At least the transport device on the outlet side as a fixed rotary feed head revolving chains is formed, the chain links enclose the tube blank and transport in the rolling direction by means of friction.
- Such devices are on known; Up to now they have been used as a rotary feed drive in front of the roll stand used and can use the chuck of conventional cold pilger rolling mills replace.
- a method for threading the rolling stock into a device according to the invention is characterized in that the rolling stock start with a finished diameter the tapered diameter corresponding to the piled rolling stock is provided, which starting from the inlet side through the roll stand into the Transport device is inserted.
- Such a threading process is mainly then required if only one outlet-side transport device with the Features according to the invention is used. This case is applicable if very long or almost endlessly long bars or loops are to be rolled. In this case, the rolling stock only has to go once into the outlet-side transport device be introduced and can then be transported forward almost endlessly and thereby "pulled" through the forming zone.
- 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; there are devices are also conceivable, such as those used for molding drawbars 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)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims (9)
- Vorrichtung zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers, auf einem Kaltpilgerwalzwerk mit in einem hin- und herbewegten Walzgerüst angeordneten und sich auf ihrem Umfang verjüngend kalibrierten Walzen, in denen das Walzgut mindestens in einem der beiden Walzgerüsttotpunkte gedreht und vorwärts transportiert wird,
dadurch gekennzeichnet,
daß zum Drehen und Vorwärtstransportieren des Walzgutes eine auslaufseitig unmittelbar hinter dem Walzgerüst angeordnete Transporteinrichtung (4) vorgesehen ist, die das gepilgerte Walzgut an seinem Umfang erfaßt. - Vorrichtung zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers nach Anspruch 1,
dadurch gekennzeichnet,
daß der auslaufseitig angeordneten Transportvorrichtung (4) ein eineinlaufseitig angeordneter Dreh- und Vorschubantrieb (3) zugeordnet ist, der zumindest zeitweise den Vorschub und die Drehung des gepilgerten Walzgutes übernimmt und dessen Bewegungsablauf auf den Bewegungsablauf der auslaufseitigen Transportvorrichtung (4) abgestimmt ist. - Vorrichtung zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers nach Anspruch 2,
dadurch gekennzeichnet,
daß die auslaufseitig angeordnete Transporteinrichtung (4) mit einer geringfühig gegenüber der Auslaufgeschwindigkeit des gepilgerten Walzgutes aus dem Walzgerüst (1) höheren Transportgeschwindigkeit betreibbar ist. - Vorrichtung zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers nach Anspruch 1,
dadurch gekennzeichnet,
daß der einlaufseitige Dreh- und Vorschubantrieb (3) unabhängig von der auslaufseitigen Transporteinrichtung (4) zu- und abschaltbar ist. - Vorrichtung zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers nach Anspruch 1,
dadurch gekennzeichnet,
daß mindestens die auslaufseitige Transporteinrichtung (4) als ortsfester Drehvorschubkopf mit umlaufenden Ketten ausgebildet ist, dessen Kettenglieder das Walzgut (Luppe 5 bzw. 6) umschließen und mittels Reibung in Walzrichtung transportieren. - Verfahren zum Einfädeln von stangenförmigem Walzgutes in eine Vorrichtung nach
Anspruch 1 und 2,
dadurch gekennzeichnet,
daß der Walzgutanfang mit einer dem Fertigdurchmesser des gepilgerten Walzgutes entsprechenden Durchmesserverjüngung versehen wird, die von der Einlaufseite ausgehend durch das Walzgerüst hindurch in die Transporteinrichtung eingeschoben wird. - Verfahren zum Einfädeln von stangenförmigem Walzgutes nach Anspruch 6,
dadurch gekennzeichnet,
daß die Durchmesserverjüngung durch Ziehen des Walzgutanfanges in einer Ziehvorrichtung hergestellt wird. - Verfahren zum zum Einfädeln von stangenförmigem Walzgutes nach Anspruch 6,
dadurch gekennzeichnet,
daß die Durchmesserverjüngung von einer Stange gebildet ist, die koaxial am vorderen Ende des Walzgutes befestigt wird. - Verfahren zum Kaltpilgern, insbesondere von extrem dünnwandigen Rohren und Stangen kleinen Durchmessers in einer Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß zur Einstellung der Transportgeschwindigkeit der auslaufseitig angeordneten Transportvorrichtung zunächst die Transportgeschwindigkeit des auslaufenden Walzgutes hinter dem Walzgerüst bei geöffneter auslaufseitiger Transportvorrichtung gemessen wird und das Ergebnis auf die Geschwindigkeitsregelung des Antriebes der Transportvorrichtung übertragen wird, wobei die Geschwindigkeit der auslaufseitig angeordneten Transportvorrichtung gegenüber der Transportgeschwindigkeit des einlaufseitigen Vorschubantriebes um 3%-10% erhöht wird, bevon die Transportvorrichtung gegen das Walzgut geschlossen wird.
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 true EP0849010A1 (de) | 1998-06-24 |
EP0849010B1 EP0849010B1 (de) | 2002-04-17 |
Family
ID=7816299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97250369A Expired - Lifetime EP0849010B1 (de) | 1996-12-17 | 1997-12-10 | Verfahren und Vorrichtung zum Kaltwalzen von Rohren und Stangen |
Country Status (4)
Country | Link |
---|---|
US (1) | US5921128A (de) |
EP (1) | EP0849010B1 (de) |
DE (1) | DE59707038D1 (de) |
RU (1) | RU2210444C2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248136B3 (de) * | 2002-10-12 | 2004-05-06 | Sms Meer Gmbh | Verfahren und Vorrichtung zum Herstellen eines sich längserstreckenden Körpers |
Families Citing this family (4)
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 |
WO2011088069A1 (en) | 2010-01-12 | 2011-07-21 | Wadsworth Lewis W | 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 |
Citations (10)
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 |
DE2425697A1 (de) * | 1973-05-30 | 1974-12-12 | Inst Metallurgii Zeleza Imeni | Verfahren zur erhoehung der ausbeute beim rohrziehen |
SU778834A1 (ru) * | 1978-11-14 | 1980-11-15 | Уральский научно-исследовательский институт трубной промышленности | Способ подготовки гильзы к пилигримовой прокатке труб |
SU863025A1 (ru) * | 1977-06-20 | 1981-09-15 | За витель Юшкевич и Л.И. Фил чкин-а | Способ холодной прокатки труб |
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 |
JPS6384704A (ja) * | 1986-09-29 | 1988-04-15 | Manabu Kiuchi | コ−ルドピルガ−圧延方法及び装置 |
EP0645200A1 (de) * | 1993-09-29 | 1995-03-29 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Maschine zum Ziehen von Stangen |
DE19609291A1 (de) * | 1995-03-09 | 1997-02-27 | Walter Wolf | Verfahren und Lagerausbildung zum Walzen von Rohren oder Stangen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3668916A (en) * | 1970-01-19 | 1972-06-13 | Wean Ind Inc | Drawing of metal tubing |
US4819471A (en) * | 1986-10-31 | 1989-04-11 | Westinghouse Electric Corp. | Pilger die for tubing production |
-
1997
- 1997-12-02 US US08/982,489 patent/US5921128A/en not_active Expired - Lifetime
- 1997-12-10 EP EP97250369A patent/EP0849010B1/de not_active Expired - Lifetime
- 1997-12-10 DE DE59707038T patent/DE59707038D1/de not_active Expired - Lifetime
- 1997-12-16 RU RU97120967/02A patent/RU2210444C2/ru not_active IP Right Cessation
Patent Citations (10)
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 |
DE2425697A1 (de) * | 1973-05-30 | 1974-12-12 | Inst Metallurgii Zeleza Imeni | Verfahren zur erhoehung der ausbeute beim rohrziehen |
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 |
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 |
EP0645200A1 (de) * | 1993-09-29 | 1995-03-29 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Maschine zum Ziehen von Stangen |
DE19609291A1 (de) * | 1995-03-09 | 1997-02-27 | Walter Wolf | Verfahren und Lagerausbildung zum Walzen von Rohren oder Stangen |
Non-Patent Citations (4)
Title |
---|
DATABASE WPI Section Ch Week 7318, Derwent World Patents Index; Class M21, AN 73-24896U [25], XP002061361 * |
DATABASE WPI Section Ch Week 8130, Derwent World Patents Index; Class M21, AN 81-54639D [30], XP002061362 * |
DATABASE WPI Section Ch Week 8227, Derwent World Patents Index; Class M21, AN 82-56858E [27], XP002061360 * |
PATENT ABSTRACTS OF JAPAN vol. 012, no. 311 (M - 734) 24 August 1988 (1988-08-24) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248136B3 (de) * | 2002-10-12 | 2004-05-06 | Sms Meer Gmbh | Verfahren und Vorrichtung zum Herstellen eines sich längserstreckenden Körpers |
Also Published As
Publication number | Publication date |
---|---|
US5921128A (en) | 1999-07-13 |
RU2210444C2 (ru) | 2003-08-20 |
DE59707038D1 (de) | 2002-05-23 |
EP0849010B1 (de) | 2002-04-17 |
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