EP1230995A2 - Verfahren zur Herstellung längsnahtgeschweisster Rohre - Google Patents
Verfahren zur Herstellung längsnahtgeschweisster Rohre Download PDFInfo
- Publication number
- EP1230995A2 EP1230995A2 EP02290051A EP02290051A EP1230995A2 EP 1230995 A2 EP1230995 A2 EP 1230995A2 EP 02290051 A EP02290051 A EP 02290051A EP 02290051 A EP02290051 A EP 02290051A EP 1230995 A2 EP1230995 A2 EP 1230995A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- metal
- drawing dies
- tube
- drawing die
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0818—Manufacture of tubes by drawing of strip material through dies
Definitions
- the invention relates to a method and an apparatus for manufacturing longitudinally welded pipes according to the preamble of claim 1 and Claim 6.
- From US 3 023 300 A is a process for the production of longitudinally welded Metal pipes are known in which a metal strip drawn off from a supply reel passes through one consisting of several form roller pairs arranged one behind the other Molding device is formed into a slotted tube in continuous operation, the Band edges of the slotted tube are welded together, the welded Metal pipe is provided with a helical or annular corrugation, and that corrugated tube is wound on a storage drum.
- a jaw trigger that firmly grips the slotted tube. Behind the Clamping jaw trigger runs the slotted tube into a guide device that holds the tube leads in front of and behind the welding point. A recess in the Guide device releases the strip edges in a short area, so that a Laser beam can weld the strip edges.
- This method is particularly suitable for the production of tubes made of stainless steel Steel with dimensions of approx. 3 - 3.5 mm and a wall thickness of 0.2 mm.
- the disadvantage of forming the metal strip into a slotted tube is limited to one Wall thickness of at least 0.15 mm. With smaller wall thicknesses, an exact Do not realize the alignment of the band edges to each other. Exactly However, the strip edges lie against each other with such extremely small wall thicknesses indispensable for achieving a good weld. This applies in particular if the strip edges are welded using a laser welding device becomes.
- the present invention is therefore based on the object, the beginning to improve the method described so that even pipes with a Outside diameter of less than 6 mm from a metal band with a wall thickness less than 0.15, in particular less than 0.10 mm can be produced.
- FIGS. 1 and 2 Exemplary embodiments explained in more detail.
- the sequence of the method is shown in simplified form in FIG. From one Supply spool 1 becomes a metal strip 2 with a wall thickness of less than 0.15 mm withdrawn and gradually formed into a slotted tube in a tube forming device 3, and the longitudinal edges of the slotted tube are welded to a laser welding device 4.
- the welded tube 5 is gripped by a collet trigger 6 and one Supply drum 7 fed.
- the welded tube 5 has the following dimensions, for example
- FIG. 2 shows a lateral section through the tube shaping device 3.
- the metal strip 2 is by means of a conventional roller tool, not shown Initially only provide a curvature at the strip edges, the radius of which Radius of the finished pipe almost corresponds.
- the pre-deformed metal strip is then arranged in a row by several Drawing dies 8, 9, 10 and 11, which have a conical opening, gradually become one Deformed tube with an open slot.
- the drawing dies are particularly advantageous 8, 9, 10 and 11 made of diamond.
- the opening angle of the drawing dies 8, 9, 10 and 11 is approximately 4 °.
- a so-called Sword 14 is provided, which through the longitudinal slot of the tube into the tube interior protrudes and contacts the longitudinal edges of the tube. This results in an exact Guiding the belt edges so that no difficulties arise during welding.
- a last drawing die 15 is provided behind the housing 13, its conical running opening at its narrowest point, d. H. the strip edges at the exit point merges, so that these by means of the laser welding device 16 together can be welded.
- This drawing die 15 is also made of diamond.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Coating With Molten Metal (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
Claims (15)
- Verfahren zur Herstellung längsnahtgeschweißter Rohre, bei dem ein von einem Vorrat kontinuierlich abgezogenes Metallband allmählich zum Schlitzrohr geformt und der Längsschlitz des Schlitzrohres verschweißt wird, dadurch gekennzeichnet, daß das Metallband (2) durch mehrere hintereinander angeordnete Ziehsteine (8,9,10,11) mit sich in Fertigungsrichtung verringerndem Durchmesser hindurchgezogen wird, daß das Metallband (2) in jedem der Ziehsteine (8,9,10,11) in Umfangsrichtung zunehmend gerundet und daß das Schlitzrohr in einer letzten Formstufe (15) unmittelbar vor dem Schweißpunkt geschlossen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Metallband (2) durch Ziehsteine (8,9,10,11,15) aus Hartmetall, Keramik oder Diamant gezogen wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Metallband (2) vor dem Eintritt in den ersten Ziehstein (8) an seinen Bandkanten derart verformt wird, daß der Krümmungsradius an den verformten Bandkanten dem Krümmungsradius des fertigen Rohres (5) nahezu entspricht.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß vor dem letzten Ziehstein (15) die Bandkanten derart geführt werden, daß die Bandkanten exakt im Schweißpunkt gelegen sind.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Schweißen durch einen Laser (16) erfolgt.
- Vorrichtung zur Herstellung von längsnahtgeschweißten Metallrohren, bestehend aus einer ein Metallband in mehreren Stufen zu einem Schlitzrohr formenden Formeinrichtung sowie einer den Längsschlitz des Schlitzrohres schließende Schweißvorrichtung, dadurch gekennzeichnet, daß die Formeinrichtung (3) aus mehreren hintereinander angeordneten Ziehsteinen (8,9,10,11) besteht, die das Metallband (2) zunehmend zu dem Schlitzrohr runden.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß vor dem letzten Ziehstein (15) ein in das Innere des Schlitzrohres hineinragendes die Bandkanten führendes Schwert (14) vorgesehen ist.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Ziehsteine (8,9,10,11,15) aus Hartmetall bestehen.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Ziehsteine (8,9,10,11,15) aus Keramik bestehen.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Ziehsteine (8,9,10,11,15) aus Diamant bestehen.
- Vorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß vor dem ersten Ziehstein (8) ein lediglich an den Bandkanten angreifendes, diese derart vorverformendes Rollenwerkzeug angeordnet ist, daß die Krümmung der Bandkantenbereiche gleich der Krümmung des fertig geschweißten Rohres ist.
- Vorrichtung nach einem der Ansprüche 6 bis 11, dadurch gekennzeichnet, daß hinter dem letzten Ziehstein (15) eine Laserschweißrichtung (16) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, daß die Öffnung der Ziehsteine (8,9,10,11,15) konusförmig verläuft.
- Vorrichtung nach einem der Ansprüche 6 bis 13, dadurch gekennzeichnet, daß die Formeinrichtung (3) aus einer ersten Gruppe aus mehreren dicht an dicht hintereinander angeordneten Ziehsteinen (8,9,10,11) und einem in Fertigungsrichtung beabstandet dahinter angeordneten weiteren Ziehstein (15) besteht.
- Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Eintrittsöffnung des jeweils nachfolgenden Ziehsteins der ersten Gruppe eine Eintrittsöffnung aufweist, deren Durchmesser größer ist als die Austrittsöffnung des davor gelegenen Ziehsteins ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10106195 | 2001-02-10 | ||
DE10106195A DE10106195A1 (de) | 2001-02-10 | 2001-02-10 | Verfahren zur Herstellung längsnahtgeschweißter Rohre |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1230995A2 true EP1230995A2 (de) | 2002-08-14 |
EP1230995A3 EP1230995A3 (de) | 2003-11-05 |
EP1230995B1 EP1230995B1 (de) | 2004-10-20 |
Family
ID=7673588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02290051A Expired - Lifetime EP1230995B1 (de) | 2001-02-10 | 2002-01-10 | Verfahren und Vorrichtung zur Herstellung längsnahtgeschweisster Rohre |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1230995B1 (de) |
JP (1) | JP2002301515A (de) |
CN (1) | CN1243618C (de) |
AT (1) | ATE280004T1 (de) |
DE (2) | DE10106195A1 (de) |
DK (1) | DK1230995T3 (de) |
ES (1) | ES2229057T3 (de) |
PT (1) | PT1230995E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1595610A1 (de) * | 2004-05-07 | 2005-11-16 | Nexans | Vorrichtung zur kontinuierlichen Herstellung von längsnahtgeschweissten metallischen Röhrchen |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102189149B (zh) * | 2010-03-08 | 2012-11-14 | 湖北三环锻压设备有限公司 | 一种高强度厚壁钢管的成形工艺方法 |
CN108688188A (zh) * | 2017-04-06 | 2018-10-23 | 上海岚青包装设备有限公司 | 一种全自动医疗床管热合机 |
CN112742893A (zh) * | 2020-12-08 | 2021-05-04 | 上海坤勇节能科技有限公司 | 一种锥孔挤压式直缝焊管成型装置及其成型方法 |
CN113319149B (zh) * | 2021-08-03 | 2021-11-02 | 天津市大千管业有限公司 | 一种生产环形金属波纹管的一体成型设备及方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE942390C (de) * | 1953-04-21 | 1956-05-03 | Mannesmann Ag | Vorrichtung zum fortlaufenden Entfernen des Innengrates von aus Bandeisen geschweissten Rohren |
US3001569A (en) * | 1958-04-29 | 1961-09-26 | Flexonics Corp | Tube forming tool |
DE2805735A1 (de) * | 1978-02-09 | 1979-08-16 | Mannesmann Ag | Verfahren und vorrichtung zum kalteinformen von baendern zur herstellung laengsnahtgeschweisster rohre u.dgl. |
JPS5522442A (en) * | 1978-08-03 | 1980-02-18 | Yoshida Kogyo Kk <Ykk> | Circular pipe forming method and device thereof |
DE9007411U1 (de) * | 1990-01-10 | 1991-06-27 | KM-kabelmetal AG, 4500 Osnabrück | Vorrichtung zur Herstellung eines längsnahtgeschweißten Metallrohrs |
JPH08267127A (ja) * | 1995-03-28 | 1996-10-15 | Nisshin Steel Co Ltd | 金属溶接管の製造方法 |
JPH11221621A (ja) * | 1998-02-06 | 1999-08-17 | Calsonic Corp | 造管方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3023300A (en) * | 1959-08-10 | 1962-02-27 | Hackethal Draht & Kabelwerk Ag | Method and apparatus for forming cable sheath |
DE3044003C2 (de) * | 1980-11-18 | 1983-07-14 | Mannesmann AG, 4000 Düsseldorf | Vorrichtung zum Einführen von dünnem Band zum Schlitzrohr durch Ziehen |
FR2580526A1 (fr) * | 1985-04-17 | 1986-10-24 | Shahum Christian | Dispositif de filiere pour rouler par etirage en fer plat et obtenir un element tubulaire |
DE4434134A1 (de) * | 1994-09-24 | 1996-03-28 | Kabelmetal Electro Gmbh | Verfahren zur Herstellung eines längsnahtgeschweißten Metallrohres |
-
2001
- 2001-02-10 DE DE10106195A patent/DE10106195A1/de not_active Withdrawn
- 2001-12-05 CN CNB011429550A patent/CN1243618C/zh not_active Expired - Fee Related
-
2002
- 2002-01-10 EP EP02290051A patent/EP1230995B1/de not_active Expired - Lifetime
- 2002-01-10 DK DK02290051T patent/DK1230995T3/da active
- 2002-01-10 AT AT02290051T patent/ATE280004T1/de active
- 2002-01-10 ES ES02290051T patent/ES2229057T3/es not_active Expired - Lifetime
- 2002-01-10 PT PT02290051T patent/PT1230995E/pt unknown
- 2002-01-10 DE DE50201327T patent/DE50201327D1/de not_active Expired - Lifetime
- 2002-02-08 JP JP2002031943A patent/JP2002301515A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE942390C (de) * | 1953-04-21 | 1956-05-03 | Mannesmann Ag | Vorrichtung zum fortlaufenden Entfernen des Innengrates von aus Bandeisen geschweissten Rohren |
US3001569A (en) * | 1958-04-29 | 1961-09-26 | Flexonics Corp | Tube forming tool |
DE2805735A1 (de) * | 1978-02-09 | 1979-08-16 | Mannesmann Ag | Verfahren und vorrichtung zum kalteinformen von baendern zur herstellung laengsnahtgeschweisster rohre u.dgl. |
JPS5522442A (en) * | 1978-08-03 | 1980-02-18 | Yoshida Kogyo Kk <Ykk> | Circular pipe forming method and device thereof |
DE9007411U1 (de) * | 1990-01-10 | 1991-06-27 | KM-kabelmetal AG, 4500 Osnabrück | Vorrichtung zur Herstellung eines längsnahtgeschweißten Metallrohrs |
JPH08267127A (ja) * | 1995-03-28 | 1996-10-15 | Nisshin Steel Co Ltd | 金属溶接管の製造方法 |
JPH11221621A (ja) * | 1998-02-06 | 1999-08-17 | Calsonic Corp | 造管方法 |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 0040, Nr. 53 (M-008), 19. April 1980 (1980-04-19) & JP 55 022442 A (YOSHIDA KOGYO KK <YKK>), 18. Februar 1980 (1980-02-18) -& JP 55 022442 A (YOSHIDA KOGYO KK <YKKY) 18. Februar 1980 (1980-02-18) * |
PATENT ABSTRACTS OF JAPAN Bd. 1997, Nr. 02, 28. Februar 1997 (1997-02-28) & JP 8 267127 A (NISSHIN STEEL CO LTD), 15. Oktober 1996 (1996-10-15) -& JP 08 267127 A (NISSHIN STEEL CO LTD) 15. Oktober 1996 (1996-10-15) * |
PATENT ABSTRACTS OF JAPAN Bd. 1999, Nr. 13, 30. November 1999 (1999-11-30) & JP 11 221621 A (CALSONIC CORP), 17. August 1999 (1999-08-17) -& JP 11 221621 A (CALSONIC CORP) 17. August 1999 (1999-08-17) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1595610A1 (de) * | 2004-05-07 | 2005-11-16 | Nexans | Vorrichtung zur kontinuierlichen Herstellung von längsnahtgeschweissten metallischen Röhrchen |
Also Published As
Publication number | Publication date |
---|---|
ATE280004T1 (de) | 2004-11-15 |
CN1368413A (zh) | 2002-09-11 |
DE50201327D1 (de) | 2004-11-25 |
DK1230995T3 (da) | 2005-02-07 |
EP1230995A3 (de) | 2003-11-05 |
CN1243618C (zh) | 2006-03-01 |
ES2229057T3 (es) | 2005-04-16 |
EP1230995B1 (de) | 2004-10-20 |
DE10106195A1 (de) | 2002-08-14 |
JP2002301515A (ja) | 2002-10-15 |
PT1230995E (pt) | 2005-03-31 |
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