EP0976466A2 - Verfahren und Vorrichtung zum Herstellen eines Rohres aus Bandmaterial - Google Patents
Verfahren und Vorrichtung zum Herstellen eines Rohres aus Bandmaterial Download PDFInfo
- Publication number
- EP0976466A2 EP0976466A2 EP99109817A EP99109817A EP0976466A2 EP 0976466 A2 EP0976466 A2 EP 0976466A2 EP 99109817 A EP99109817 A EP 99109817A EP 99109817 A EP99109817 A EP 99109817A EP 0976466 A2 EP0976466 A2 EP 0976466A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollers
- workpiece
- edges
- pairs
- turning
- 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
-
- 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
- B21C37/083—Supply, or operations combined with supply, of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
- B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
Definitions
- the invention relates to a method for producing a tube - preferably with a small wall thickness - made of tape material, wherein the initially flat strip material - made of metal, especially steel - in several forming stations one behind the other in the conveying direction is formed into the tube by the edges of the strip material more and more bent and curved towards each other.
- the invention is therefore based on the object of a method and a device for the production of pipes of the entry to create the type with which the edges to be welded with greatest possible accuracy even before a welding station or Welding device meet, so that in particular pipes with thin walls and pipes with small diameters can be produced.
- the drives of the driven form rollers can thus be synchronized be, the synchronization is carried out in particular mechanically. This allows the peripheral speeds of the form rollers Requirements of the workpiece and its material in the best possible way to adapt in the sense that a tube of high quality is created.
- the device used to solve the problem mentioned at the beginning with several pairs of rollers is characterized in that between the pairs of rollers on both sides of the workpiece and the pairs of rollers acting on the outside of the curvatures a turning section and a turning device for twisting the Workpiece by about a quarter turn and that behind that the outside of the curved edges attacking pairs of rollers Axes of rotation are arranged parallel to the axes of rotation of the front the rotating path and rotating device are rollers that these form rollers arranged behind the turning section also with are connected to the drive and that in the feed direction behind them to reduce the distance between the edges to be bent serving form rollers another turning section and turning device to twist the workpiece back and at least one behind Pair of rollers arranged to bring the edges closer to the welding process are.
- a device is therefore proposed in which - of the Turning devices apart - all pairs of rollers parallel, horizontal Can have axes of rotation, so that they are also driven synchronously can. Accordingly, not only is the deformation accurate, but also also the feed of the originally band-shaped workpiece, see above that it is appropriately controlled to a tube of high accuracy can be deformed even if this pipe is only a small one Wall thickness and possibly only a small diameter Has.
- the edges are so precise move to each other, that a correspondingly accurate welding without special welding slot control, even by means of laser welding is possible. This takes advantage of the fact that the torsion Workpiece and thus the slot under a certain tension stand so that they maintain a correspondingly precise location.
- Workpieces and materials can be made from at least one workpiece existing rotating device form-fitting pair of rollers and especially the pair of roles in terms of orientation the axes of rotation can be pivoted transversely to the feed direction and be ascertainable. This means that it can be used for pipe production Preselected torsion angles within appropriate limits and be set.
- the swivel angle for the rotating device can be about 25 °, in particular about 3 ° to 10 °, adjustable and can be opposite the axes of rotation in the feed direction before the turning distance located axes of rotation between 75 ° and 100 °, in particular approximately 80 ° to 90 °.
- a device designated as a whole by 1 is used for manufacturing a tube 2 made of metallic strip material 3, also in the following "Workpiece 3" called, the device 1 due to the Features and details described below are suitable is, pipes with a relatively small diameter and relatively smaller To produce wall thickness.
- the device 1 has several in the feed direction of the Workpiece 3 roller pairs 01, 02, 03 arranged one behind the other and 04 and in the feed direction according to arrow Pf1 in FIG Distance to pairs of rollers 05 and 06 and with a further distance Roller pairs 07 and 08 as well as 09 and finally roller pairs 10 to 13 to calibrate on, causing a gradual deformation with increasing curvature of the edges 4 of the workpiece 3 in Feed course is carried out towards each other, this gradual deformation in Figure 4 in a schematic representation is indicated from the bottom up.
- Fig.4 in the bottom representation shows the initial cross section of the band-shaped Workpiece 3, which according to those located above Cross sections are deformed more and more until according to the very top these schematic cross-sectional representations, the tube 2 is formed.
- pairs of rollers 05 and 06 are designed and arranged so that their roles attack on the outside of the curved edges of the workpiece 3, as it is particularly evident in Fig.5 in the "stitch 05" and as “Stitch 06" designated individual representations can be seen, wherein additionally between the support rollers 05a and 06a which reach between the edges are indicated in Fig.5.
- the workpiece 3 with its cross section between the annular groove and the annular projection of these rollers 61 and 62 fits and thus form-fitting in the rotated position is held and fixed, although at the same time a feed he follows.
- the roller 91 also has an annular groove according to FIGS. 8 and 5, while the Roller 92 engages the workpiece at its slot has an annular projection, which is also in an annular groove is arranged to the now adapted to the final pipe Cross section of the workpiece 3 according to Fig. 5, stitch 06/07 consider.
- the swivel angle for the workpiece 3 within the rotating device 6 and also in turn in the rotating device 9 can also via a larger angle difference can be changed or - always constant angle of rotation - be different.
- Angle of rotation of approximately 75 ° to 100 ° and in particular approximately 80 ° to 90 ° or - as in the exemplary embodiments - deviations of 90 °, that are smaller than 10 °.
- Figures 1 and 2 show that a first set of pairs of rollers from “stitch 01" to “stitch 04" for the first deformation of the edges 4 and their curvature compared to the starting position as a sheet metal strip trained workpiece 3 up to the turning distance with the first Rotating device 6 comprises four pairs of rollers. It has shown, that this is a convenient number of forming rolls around the sheet metal strip so far to prepare and in terms of cross section deform that it is then outside for further deformation of the curvatures of the edges is to be recorded, but what about a quarter turn is twisted.
- the pairs of rollers 07 and 08 behind the second rotating device 9 also have rollers rotating about horizontal axes on. It is then followed by upsetting rolls 09, too can rotate around vertical axes. In the further feed process then closes a calibration part with the roller pairs 10 to 13 and finally the welding device 14.
- first pair of rollers 100 before the subsequent pairs of roles 01 to 04 slightly different is trained. It is the pair of roles, which in Fig. 5, left column at the top with "before stitch 01" is designated and is also indicated schematically in FIG.
- the first pair of rollers 01 for bending the edges 4 of the workpiece 3 is upstream of this pair of rollers and is used for rolling the Edges of the edges 4, so that these after the bending of the cross section to a circle despite the different radii of curvature of the Inside and outside of the workpiece a narrow, practically constant gap practically over the entire material thickness form with each other, which makes welding easier.
- edges 4 are curved so far that they have an undercut 5 form, the partially already curved and shaped workpiece 3 twisted about a quarter turn in a first turning section and then further deformed to the tube 2, the between the Edges 4 located slot in the further course of the feed 4 and 5 is reduced, initially in the slot still engage corresponding annular guide projections can.
- the workpiece 3 in a second Rotation distance - by means of the second rotating device 9 - again rotated back, then the edges 4 finally together be welded. If necessary, one can also be used beforehand Calibration take place.
- the torsion angle can vary the first rotation section and accordingly also in the second rotation section be selected and set.
- a variation of this angle by 8 °, in Figure 8 such a 4 °.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Metal Extraction Processes (AREA)
- Making Paper Articles (AREA)
- Clamps And Clips (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
- Fig.1
- eine Seitenansicht und
- Fig.2
- eine Draufsicht einer erfindungsgemäßen Vorrichtung mit Paaren von Umformrollen und in Vorschubrichtung dazwischen angeordneten Drehstrecken mit Drehvorrichtungen für ein ursprünglich bandförmiges Werkstück, welches im Vorschubverlauf zu einem Rohr geformt wird,
- Fig.3
- die einzelnen Rollenpaare vom ersten Eintritt des Werkstückes in die Vorrichtung bis zur Fertigstellung einschließlich auch einer Kalibrierung, wobei die einzelnen Formrollen teilweise nur mit den einander zugewandten Hälften ab ihren Mittellinien dargestellt sind und dieselbe Numerierung wie in Fig.1 und 2 aufweisen,
- Fig.4
- jeweils den Querschnitt des Werkstückes im Fortschritt der Verformung von einem ursprünglich bandförmigen Ausgangsmaterial bis hin zu dem endgültig geformten Rohr, wobei der Arbeitsvorschritt in Fig.4 von unten nach oben verläuft,
- Fig.5
- in gegenüber Fig.3 vergrößertem Maßstab und im Längsschnitt die Formgebung der Formrollenpaare in ihrem Wirkbereich auf das Werkstück, wobei der Verformungsfortschritt in zwei Spalten jeweils von oben nach unten dargestellt ist und zwar zunächst in der linken Spalte ganz von oben ausgehend von einem ebenen Band über mehrere Umformschritte, die sich in der rechten Spalte wiederum von oben nach unten fortsetzen,
- Fig.6
- eine erste Drehvorrichtung entgegen der Vorschubrichtung, also in Richtung des Pfeiles "A" in Fig.7 gesehen,
- Fig.7
- eine Seitenansicht der Drehvorrichtung gemäß Fig.6,
- Fig.8
- eine der Fig.6 entsprechende Ansicht einer in Vorschubrichtung zweiten Drehvorrichtung mit Blickrichtung in Richtung des Pfeiles "B" in Fig.9 sowie
- Fig.9
- eine Seitenansicht der zweiten Drehvorrichtung gemäß Fig.8.
Claims (14)
- Verfahren zum Herstellen eines Rohres (2) - vorzugsweise mit geringer Wandstärke - aus Bandmaterial, wobei das zunächst flache Bandmaterial in mehreren in Förderrichtung hintereinanderliegenden Umformstationen zu dem Rohr umgeformt wird, indem die Ränder (4) des Bandmateriales mehr und mehr umgebogen und aufeinanderzu gekrümmt werden, dadurch gekennzeichnet, daß dann, wenn die Ränder (4) so weit gekrümmt sind, daß sie einen Hinterschnitt (5) bilden, das teilweise geformte Werkstück (3) in einer ersten Drehstrecke um etwa eine Viertel-Umdrehung tordiert und danach weiter verformt wird, wobei der zwischen den Rändern (4) befindliche Schlitz im weiteren Verlauf des Vorschubes und der Verformung verkleinert wird, und daß vor dem endgültigen Schließen und Verschweißen des Schlitzes das Werkstück (3) in einer zweiten Drehstrecke wieder zurückverdreht und dann die zueinander bewegten Ränder (4) verschweißt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Werkstück in einer zweiten Drehstrecke etwa um denselben Winkel wieder zurückverdreht wird, um den es zuvor auf der ersten Drehstrecke tordiert wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß nach der ersten Drehstrecke an dem Werkstück (3) angreifende Formrollen (05,06) um horizontale Achsen angetrieben werden und das Werkstück (3) bei seiner weiteren Verformung von dieser Formrolle (05,06) in Vorschubrichtung geschoben wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Formrollen (07,08) hinter der zweiten Drehstrecke ebenfalls um horizontal liegende Achsen rotieren und das Werkstück (3) in Vorschubrichtung ziehen.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Antriebe der angetriebenen Formrollen vor, zwischen und nach den Drehstrecken synchronisiert angetrieben werden und die Synchronisierung insbesondere mechanisch erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Torsionswinkel im Verlaufe der ersten Drehstrecke und/oder der zweiten Drehstrecke zwischen 75° und 100° gewählt, insbesondere eingestellt wird.
- Vorrichtung (1) zum Herstellen eines Rohres (2) aus metallischem Bandmaterial (3) mit relativ kleinem Durchmesser und geringer Wandstärke mit mehreren in Vorschubrichtung des Werkstückes (3) hintereinander angeordneten Rollenpaaren (01,02,03,04) zur allmählichen und dann zunehmenden Verformung und Krümmung der Ränder (4) des Werkstückes (3) im Vorschubverlauf aufeinanderzu, wobei erste Rollenpaare (01 bis 04) an Oberseite und Unterseite des Werkstückes (3) angreifen und in dem Bereich, in welchem die gebogenen Ränder (4) Hinterschneidungen (5) bilden, Rollenpaare vorgesehen sind, die an den Außenseiten der gekrümmten Ränder angreifen, dadurch gekennzeichnet, daß zwischen den an beiden Seiten des Werkstückes angreifenden Rollenpaaren und den an den Außenseiten der Krümmungen angreifenden Rollenpaaren eine Drehstrecke und eine Drehvorrichtung (6) zum Tordieren des Werkstückes um etwa eine Viertel Drehung und dahinter die an den Außenseiten der gekrümmten Ränder (4) angreifenden Rollenpaare mit Drehachsen angeordnet sind, die parallel zu den Drehachsen der vor der Drehstrecke und Drehvorrichtung befindlichen Rollen sind, daß diese hinter der Drehstrecke angeordneten Formrollen mit dem Antrieb verbunden sind und daß in Vorschubrichtung hinter diesen zum Vermindern des Abstandes der aufeinanderzu zu biegenden Ränder (4) dienenden Formrollen eine weitere Drehstrecke und Drehvorrichtung (9) zum Zurücktordieren und Rückverdrehen des Werkstückes und dahinter wenigstens ein Rollenpaar zum Annähern der Ränder (3) für den Schweißvorgang angeordnet sind.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die erste Drehvorrichtung (6) und/oder die zweite Drehvorrichtung (9) wenigstens ein Rollenpaar aufweisen, dessen eine Rolle (61) eine Ringnut und dessen andere Rolle (62) einen dazu passenden Ringvorsprung aufweisen, wobei die Drehachsen (63) dieser Rollen (61,62) quer und etwa um den Drehwinkel des Werkstückes (3) gegenüber den vorhergehenden Rollenpaaren verschwenkt angeordnet sind, und daß das Werkstück (3) mit seinem Querschnitt zwischen die Ringnut und den ringförmigen Vorsprung paßt.
- Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die aus wenigstens einem das Werkstück (3) formschlüssig erfassenden Rollenpaar bestehende Drehvorrichtung (6,9) und insbesondere das Rollenpaar bezüglich der Orientierung der Drehachsen quer zur Vorschubrichtung (Pf1) verschwenkbar und feststellbar ist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Schwenkwinkel für die Drehvorrichtung (6;9) um etwa 25°, insbesondere etwa um 3° bis 10°, verstellbar ist und gegenüber den Drehachsen der in Vorschubrichtung vor der Drehstrecke befindlichen Drehachsen zwischen 75° und 100°, insbesondere etwa 80° bis 90° beträgt.
- Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß ein erster Satz von Rollenpaaren für das erste Krümmen und Verformen der Ränder gegenüber der Ausgangslage des als Blechband ausgebildeten Werkstückes (3) bis zu der Drehstrecke etwa drei bis sechs, bevorzugt vier oder fünf Rollenpaare umfaßt.
- Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß hinter der ersten Drehvorrichtung (6) wenigstens zwei Rollenpaare (05,06) zum Annähern der gekrümmten Ränder (4) aufeinanderzu und dahinter die zweite Drehvorrichtung (9) angeordnet sind.
- Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, daß die Rollenpaare hinter der zweiten Drehvorrichtung (9) teils um horizontale, teils um vertikale Achsen rotierende Rollen aufweisen und dahinter die Schweißvorrichtung (14) angeordnet ist.
- Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß dem ersten zum Biegen der Ränder (4) des Werkstückes (3) dienenden Rollenpaar ein Rollenpaar zum Anwalzen der Kanten der Ränder (4) vorgeschaltet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19834400 | 1998-07-30 | ||
DE19834400A DE19834400C1 (de) | 1998-07-30 | 1998-07-30 | Verfahren und Vorrichtung zum Herstellen eines Rohres, insbesondere für ein Rohr mit geringer Wandstärke, aus metallischem Bandmaterial mit relativ kleinem Durchmesser |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0976466A2 true EP0976466A2 (de) | 2000-02-02 |
EP0976466A3 EP0976466A3 (de) | 2000-10-18 |
EP0976466B1 EP0976466B1 (de) | 2002-08-14 |
Family
ID=7875876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99109817A Expired - Lifetime EP0976466B1 (de) | 1998-07-30 | 1999-05-19 | Verfahren und Vorrichtung zum Herstellen eines Rohres aus Bandmaterial |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0976466B1 (de) |
AT (1) | ATE222149T1 (de) |
DE (2) | DE19834400C1 (de) |
DK (1) | DK0976466T3 (de) |
ES (1) | ES2182429T3 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1466676A1 (de) * | 2003-04-10 | 2004-10-13 | DREISTERN GmbH & Co.KG | Verfahren und Vorrichtung zum Herstellen eines geschlossenen Metallprofils oder Metallrohrs mit in Längsrichtung variierender Wanddicke |
CN102847744A (zh) * | 2012-09-20 | 2013-01-02 | 上海和达汽车配件有限公司 | 一种不等壁厚管开口件的制作方法 |
CN106031936A (zh) * | 2015-03-13 | 2016-10-19 | 奇昊汽车系统(苏州)有限公司 | 一种支撑套管的制造生产方法 |
CN108895213A (zh) * | 2018-05-30 | 2018-11-27 | 浙江康盛股份有限公司 | 一种超薄壁管及其加工方法 |
CN117020409A (zh) * | 2023-08-28 | 2023-11-10 | 佛山市智焱激光科技有限公司 | 一种自动卷料激光焊接装置 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10007496C1 (de) * | 2000-02-18 | 2001-04-26 | Dreistern Werk Maschinenbau Gmbh & Co Kg | Profilieranlage mit einer Profiliermaschine und mit einer in deren Verlauf angeordneten Schweißvorrichtung zum Herstellen eines aus metallischem Bandmaterial geformten Profils |
DE10226517C1 (de) * | 2002-06-14 | 2003-10-30 | Dreistern Werk Maschinenbau Gmbh & Co Kg | Verfahren und Vorrichtung zum Herstellen eines Hohlprofils |
EP1644145B1 (de) | 2003-06-27 | 2010-11-10 | Crebocan Ag | Verfahren und vorrichtung zum herstellen eines dosenkörpers, sowie dosenkörper |
US7670094B2 (en) | 2004-01-15 | 2010-03-02 | Crebocan Ag | Method and device for producing a can body and can body |
DE102005022244B4 (de) | 2005-05-13 | 2007-07-19 | Eroform Edelstahl Gmbh | Führungs- und Verformungssystem, dessen Verwendung sowie Verfahren zur Herstellung von geschweißten Rohren |
DE102006027046B3 (de) * | 2006-06-10 | 2007-11-22 | Lemuth Gmbh | Verfahren und Vorrichtung zum Herstellen eines Rohres |
DE102006035702A1 (de) | 2006-08-01 | 2008-02-21 | Eroform Edelstahl Gmbh | Aufhängung für ein Laserschweißgerät |
DE102009007701B4 (de) * | 2009-02-05 | 2011-02-17 | Audi Ag | Verfahren zur Herstellung eines geschlossenen Profils aus einem Flachmaterialband mittels Walzprofilieren |
DE102009050569B4 (de) * | 2009-08-10 | 2011-09-22 | Willy Kreutz Gmbh & Co. Kg | Kontaktstift zur Verwendung an Beleuchtungsmitteln sowie Verfahren zu dessen Herstellung |
DE102009056324A1 (de) | 2009-12-01 | 2010-07-01 | Dreistern Gmbh & Co. Kg | Verfahren und Vorrichtung zum Längsumformen eines Metallbands mit entlang seiner Längsachse variierender Materialstärke |
CN117299891B (zh) * | 2023-11-24 | 2024-02-06 | 河北鹏鑫管道装备集团有限公司 | 一种异形弯管加工装置及其加工方法 |
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US3101401A (en) * | 1957-07-25 | 1963-08-20 | Schlotterer Gustav | Method for the manufacture of hollow bodies |
US4460118A (en) * | 1981-05-29 | 1984-07-17 | Nippon Steel Corporation | Method for forming electric welded pipe |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361549A (en) * | 1976-11-16 | 1978-06-02 | Shinwa Kasei Kk | Pipe forming device from tape form substance |
DE3529160A1 (de) * | 1985-08-14 | 1987-02-26 | Nippon Steel Corp | Formwalzvorrichtung |
-
1998
- 1998-07-30 DE DE19834400A patent/DE19834400C1/de not_active Expired - Fee Related
-
1999
- 1999-05-19 AT AT99109817T patent/ATE222149T1/de not_active IP Right Cessation
- 1999-05-19 EP EP99109817A patent/EP0976466B1/de not_active Expired - Lifetime
- 1999-05-19 DK DK99109817T patent/DK0976466T3/da active
- 1999-05-19 DE DE59902324T patent/DE59902324D1/de not_active Expired - Fee Related
- 1999-05-19 ES ES99109817T patent/ES2182429T3/es not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101401A (en) * | 1957-07-25 | 1963-08-20 | Schlotterer Gustav | Method for the manufacture of hollow bodies |
US4460118A (en) * | 1981-05-29 | 1984-07-17 | Nippon Steel Corporation | Method for forming electric welded pipe |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 197828 Derwent Publications Ltd., London, GB; AN 1978-50312 XP002145141 -& JP 53 061549 A (SHINWA KASEI KK), 2. Juni 1978 (1978-06-02) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1466676A1 (de) * | 2003-04-10 | 2004-10-13 | DREISTERN GmbH & Co.KG | Verfahren und Vorrichtung zum Herstellen eines geschlossenen Metallprofils oder Metallrohrs mit in Längsrichtung variierender Wanddicke |
CN102847744A (zh) * | 2012-09-20 | 2013-01-02 | 上海和达汽车配件有限公司 | 一种不等壁厚管开口件的制作方法 |
CN106031936A (zh) * | 2015-03-13 | 2016-10-19 | 奇昊汽车系统(苏州)有限公司 | 一种支撑套管的制造生产方法 |
CN106031936B (zh) * | 2015-03-13 | 2018-01-19 | 奇昊汽车系统(苏州)有限公司 | 一种支撑套管的制造生产方法 |
CN108895213A (zh) * | 2018-05-30 | 2018-11-27 | 浙江康盛股份有限公司 | 一种超薄壁管及其加工方法 |
CN117020409A (zh) * | 2023-08-28 | 2023-11-10 | 佛山市智焱激光科技有限公司 | 一种自动卷料激光焊接装置 |
Also Published As
Publication number | Publication date |
---|---|
DE59902324D1 (de) | 2002-09-19 |
EP0976466A3 (de) | 2000-10-18 |
ATE222149T1 (de) | 2002-08-15 |
ES2182429T3 (es) | 2003-03-01 |
DE19834400C1 (de) | 2000-01-05 |
DK0976466T3 (da) | 2002-12-16 |
EP0976466B1 (de) | 2002-08-14 |
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