DE2031904A1 - Tube shaped profiles - with axial separation wall from strip - Google Patents

Tube shaped profiles - with axial separation wall from strip

Info

Publication number
DE2031904A1
DE2031904A1 DE19702031904 DE2031904A DE2031904A1 DE 2031904 A1 DE2031904 A1 DE 2031904A1 DE 19702031904 DE19702031904 DE 19702031904 DE 2031904 A DE2031904 A DE 2031904A DE 2031904 A1 DE2031904 A1 DE 2031904A1
Authority
DE
Germany
Prior art keywords
strip
welding
separation wall
tube shaped
shaped profiles
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.)
Pending
Application number
DE19702031904
Other languages
German (de)
Inventor
Hans 8520 Erlangen; Rüppel Rolf Dipl.-Ing. 8521 Tennenlohe Schäfer
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE19702031904 priority Critical patent/DE2031904A1/en
Publication of DE2031904A1 publication Critical patent/DE2031904A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/0803Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/151Making tubes with multiple passages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00Welding by high-frequency current heating
    • B23K13/01Welding by high-frequency current heating by induction heating
    • B23K13/02Seam welding
    • B23K13/025Seam welding for tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)

Abstract

Hollow tube shaped profiles with an axial plane separation wall are produced by the continuous forming of strip into the desired profile. Following this the contact edges are joined with their respective contact planes by means of medium or high frequency heating. In the prefd. process the slotted pipe welding method is employed, in which heat is generated along A V-gap. The method required a minimum number of working steps and is thus very efficient.

Description

Verfahren zum Herstellen von Hohlprofilen Die Erfindung betrifft ein Verfahren zum Herstellen von Hohlprofilen mit Trennwänden aus streifenförmigein Material in einem Arbeitsgang.Method for producing hollow profiles The invention relates to a Method for the production of hollow profiles with partitions made of strips Material in one operation.

Es ist bereits bekannt, Hohlkörper wie Rohre, Profile usw. in kontinuierlich fortschreitendem Arbeitsprozeß aus streifenförmigem Material zu formen und zu schweißen. Piir verschiedene Anwendungszwecke wird gefordert, daß derartige Hohlprofile eine Trennwand aufweisen. Es ist bekannt, diese Trennwände nach der Pertigstellung in den Hohlkörper einzubringen und z.B. durch Verschweißen zu befestigen. Pernerhin ist es auch bekannt, den Hohlkörper aus zwei Teilhälften herzustellen und diese gleichzeitig oder nacheinander zu verschweißen, wobei dann auch eine Trennwand mit verschweißt werden kann.It is already known to use hollow bodies such as pipes, profiles, etc. in a continuous manner to shape and weld progressive work process from strip-shaped material. Piir various applications is required that such hollow profiles a Have partition. It is known that these partitions after completion in insert the hollow body and fix it e.g. by welding. After all it is also known to produce the hollow body from two halves and these to be welded at the same time or one after the other, in which case also a partition wall with can be welded.

Die Aufgabe der hier vorliegenden Erfindung besteht darin, ein Hohlprofil mit Trennwand aus streifenförmigem Material in einem Arbeitsgang herzustellen.The object of the present invention is to provide a hollow profile with a partition made of strip-shaped material in one operation.

Diese Aufgabe wird erfindungsgemäß- dadurch gelöst, daß das streifenförmige Material kontinuierlich bis zum gewünschten Profil verformt wird und anschließend die Stoßkanten mit ihren zugeordnetzen Stoßflächen durch Mittei- oder Hochfrequenzenergie miteinander verschweißt werden. Die elektrische Energie kann dabei mittels Induktor oder konduktiv zugeführt werden. Beim hochfrequenten Schwc i f3verfahren werden die zu verschweißenden Kanten zweckmäßigerweise so g£führt, daß diese Kanten - wie beim Schlitzrohrschweisaen - unmittelbar vor den Schweißpunkten einen V-förmigen Spalt bilden.This object is achieved according to the invention in that the strip-shaped Material is continuously deformed to the desired profile and then the abutting edges with their associated abutting surfaces through medium or high frequency energy are welded together. The electrical energy can be generated by means of an inductor or be fed conductively. With the high-frequency Schwc i f3verfahren the edges to be welded appropriately so that these edges - like in the case of slotted pipe welding - a V-shaped one directly in front of the welding points Form gap.

Zusätzlich kann insbesondere bei der Verschweißung gröberer ardstärken eine Vorwärmung der zu verschweißenden Zonen mittels In duktionswärme vorteilhaft sein.In addition, coarser ard thicknesses can be used, especially when welding Preheating the zones to be welded by means of induction heat is advantageous be.

Anhand einer Zeichnung sei die Erfindung näher erläutert; es zeigen: Fig. 1 ein Beispiel einer kontinuierlichen Verformung eines Blechstreifens zu einem Hohlprofil mit gerader TrenzlvJand, Fig. 2 den daran anschließenden Schweißvorgang und Fig. 3 ein Beispiel einer kontinuierlichen Verformung eines Blechstreifens zu einem Hohlprofil mit gewellter Trennwand.The invention will be explained in more detail with the aid of a drawing; show it: Fig. 1 shows an example of a continuous deformation of a sheet metal strip into a Hollow profile with straight TrenzlvJand, Fig. 2 the subsequent welding process and FIG. 3 shows an example of a continuous deformation of a sheet metal strip a hollow profile with a corrugated partition.

Wie aus Fig. 1 ersichtlich, wird aus einem Bleckstreifen -1 ein Hohlprofil geforflt, welches aus den beiden Rohrhälften 3 und 4 und der geraden Trennwand 2 besteht. Mit 3', 4' und 311, 4 sind dabei Zwischenstadien des Verformungsvorganges angedeutet.As can be seen from Fig. 1, a sheet metal strip -1 becomes a hollow profile formed, which consists of the two pipe halves 3 and 4 and the straight partition 2 consists. With 3 ', 4' and 311, 4 are intermediate stages of the deformation process indicated.

Wie Fig. 2 zeigt, können die Stoßkanten 5 bzw. 5' mit den Stoßflächen 6, 6' induktiv oder konduktiv verschweißt werden. Bei einer induktiven oder konduktiven Hochfrequenzschlvei¢ung wird dabei vorteilhafterweise das Prinzip des Schlitzrohrschweißens angewandt, und zwar werden die über Kontakte 8 zugeführten bzw.As shown in FIG. 2, the abutting edges 5 and 5 'with the abutting surfaces 6, 6 'are inductively or conductively welded. In the case of an inductive or conductive The principle of slot tube welding is advantageously used for high frequency welding applied, namely the via contacts 8 supplied or

durch den Induktor 10 erzeugten Ströme durch den Spalt 11 gezwungen, längs der Kanten 5 bzw. der der Kante 5 gegenüberliegenden Stoßfläche 6 zu fließen und damit den Punkt, an dem Stoßkante und Stoßfläche zusammentreffen, nämlich den Sdiwe1ßpunkt7, zu erwärmen. Bei entsprechender Führung des Rohres mit Druckrollen durch den Induktor oder durch die Kontakte 8 und 9 kann somit das Profil auf der ganzen Länge geschweißt werden. Vlie aus der Fig. 2 ersichtlich, ist dabei der Schweißvorgang nicht nur auf die oben dargestellten Schweißkanten 5 bzw. Stoßflächen 6 beschränkt, sondern kann genausogut und gleichzeitig an den unteren Kanten 5' bzw. Stoßflächen 6t durchgeführt werden.Currents generated by the inductor 10 are forced through the gap 11, to flow along the edges 5 or the abutment surface 6 opposite the edge 5 and thus the point at which the joint edge and joint surface meet, namely the Sdiwe1ßpunkt7 to heat up. With appropriate guidance of the pipe with pressure rollers through the inductor or through the contacts 8 and 9 can thus the profile on the be welded over the entire length. Vlie from Fig. 2 can be seen, is the welding process not only limited to the welding edges 5 or abutment surfaces 6 shown above, but can just as well and at the same time on the lower edges 5 'or abutment surfaces 6t can be carried out.

Fig. 3 zeigt als Beispiel eine kontinuierliche Verformung eines Blechstreifens 12 zu einem Hohlprofil mit den zwei Rohrhälften 14 und 15 und einer gewellten Trennwand 13. Mit 14', 15' und 14", 1.5" sind dabei Zwischenstadien des Verformungsprozeßes angezentet.3 shows, as an example, a continuous deformation of a sheet metal strip 12 to form a hollow profile with the two tube halves 14 and 15 and a corrugated partition 13. With 14 ', 15' and 14 ", 1.5" are intermediate stages of the deformation process accented.

Während des Verformungsprozeßes können dabei in jedem Fall die ,äußersten Kanten bereits im Vorformungsprozeß die endgültigen Radien erhalten, z.B. 14' in Fig. 3. Wie ersichtlich, läßt sich durch das -vorstehend beschriebene Verfahren aus einem Blechstreifen ein Doppelhohlprofil in einem Arbeitsgang herstellen, wobei durch umfassenden Induktor eine gleichzeitige Schweißung zweier oder auch gegebenenfalls mehrerer Nähte möglich ist. Dasselbe gilt auch für die konduktive Schweißung; allerdings erhöht sich dabei die Zahl der notwendigen Kontakte.During the deformation process, the, outermost Edges already have their final radii in the preforming process, e.g. 14 'in Fig. 3. As can be seen, by the method described above produce a double hollow profile from a sheet metal strip in one operation, wherein a simultaneous welding of two or possibly also by a comprehensive inductor multiple seams is possible. The same also applies to conductive welding; Indeed the number of necessary contacts increases.

Wenn auch die Herstellung der Profilhohlkörper zweckmäßigerweise mit Hochfrequenz, also etwa 100 kllz, vorzune:en sein dürfte, so kann es doch auch vorteilhaft sein, die zu verschweißenden Kanten vorher z.B. mit Mittelfrequenz zu erv rmen, um den hnteil der an sich teuren Hochfrequenz an der Wärmemenge möglichst gering zu halten.Even if the production of the hollow profile body is expediently included High frequency, i.e. about 100 kllz, should be ahead, but it can also be advantageous be to heat the edges to be welded beforehand, e.g. with medium frequency, the proportion of the high frequency, which is expensive in itself, of the amount of heat is as low as possible to keep.

3 Patentansprüche 3 Figuren3 claims 3 figures

Claims (3)

Patentansprüche erfahren zum Herstellen von Hohlprofilen mit Trennwänden aus streifenförmigem Material in einem Arbeitsgang, dadurch gekennzeichnet, daß das -streifenförmige Material (1) kontinuierlich bis zum gewünschten Profil verformt wird und anschließend die Stoßkanten (5, 5') mit ihren zugeordneten Stoßflächen (6, 6') durch Mittel- und/oder Hochfrequenzenergie miteinander verschweißt werden.Learn about patent claims for the production of hollow profiles with partition walls of strip-shaped material in one operation, characterized in that the strip-shaped material (1) is continuously deformed to the desired profile and then the abutting edges (5, 5 ') with their associated abutting surfaces (6, 6 ') are welded to one another by medium and / or high frequency energy. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß'die Stoßflächen (6) und; die Stoßkanten (5) so geführt werden, daß sie vor dem jeweiligen Schweißpunkt (7) einen V-förmigen Spalt (ii) bilden und die Erwärmung in der Art des bekannten Hochfrequenz-Schlitzrohrschweißens vorgenommen wird0 2. The method according to claim 1, characterized in that'die abutment surfaces (6) and; the abutting edges (5) are guided so that they are in front of the respective welding point (7) forming a V-shaped gap (ii) and heating in the manner of the known High-frequency slot tube welding is carried out 0 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Schweißstellen vor dem eigentlichen Schweißvorgang induktiv vorerwärmt werden.3. The method according to the claims 1 and 2, characterized in that the welding points before the actual welding process be inductively preheated.
DE19702031904 1970-06-27 1970-06-27 Tube shaped profiles - with axial separation wall from strip Pending DE2031904A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702031904 DE2031904A1 (en) 1970-06-27 1970-06-27 Tube shaped profiles - with axial separation wall from strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702031904 DE2031904A1 (en) 1970-06-27 1970-06-27 Tube shaped profiles - with axial separation wall from strip

Publications (1)

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DE2031904A1 true DE2031904A1 (en) 1972-01-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547649A1 (en) * 1983-06-14 1984-12-21 Mtu Muenchen Gmbh METHOD FOR MANUFACTURING SMALL PROFILE TUBES FOR HEAT EXCHANGERS WITH SMALL TUBES AND SMALL TUBES AS PRODUCED
US4654962A (en) * 1985-05-30 1987-04-07 Sola Basic Industries, Inc. Method of fabricating doubly-truncated circular waveguide
EP0239814A2 (en) * 1986-03-29 1987-10-07 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Profiled tube having an elliptical or lancet-shaped cross-section, for use in tubular heat exchangers, and method for its manufacture
EP0811436A1 (en) * 1996-06-06 1997-12-10 Sango Co., Ltd. Method of manufacturing pipe
EP2299223A2 (en) * 2009-09-17 2011-03-23 Behr GmbH & Co. KG Flat pipe for a heat exchanger
EP2499919A1 (en) * 2011-03-17 2012-09-19 Förster Technik GmbH Conveying device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547649A1 (en) * 1983-06-14 1984-12-21 Mtu Muenchen Gmbh METHOD FOR MANUFACTURING SMALL PROFILE TUBES FOR HEAT EXCHANGERS WITH SMALL TUBES AND SMALL TUBES AS PRODUCED
US4654962A (en) * 1985-05-30 1987-04-07 Sola Basic Industries, Inc. Method of fabricating doubly-truncated circular waveguide
EP0239814A2 (en) * 1986-03-29 1987-10-07 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Profiled tube having an elliptical or lancet-shaped cross-section, for use in tubular heat exchangers, and method for its manufacture
US4766953A (en) * 1986-03-29 1988-08-30 Mtu Motoren-Und Turbinen-Union Munchen Gmbh Shaped tube with elliptical cross-section for tubular heat exchangers and a method for their manufacture
EP0239814A3 (en) * 1986-03-29 1990-03-21 Mtu Muenchen Gmbh Profiled tube having an elliptical or lancet-shaped cross-section, for use in tubular heat exchangers, and method for its manufacture
EP0811436A1 (en) * 1996-06-06 1997-12-10 Sango Co., Ltd. Method of manufacturing pipe
US6012315A (en) * 1996-06-06 2000-01-11 Sango Co. Ltd. Method of manufacturing pipe
EP2299223A2 (en) * 2009-09-17 2011-03-23 Behr GmbH & Co. KG Flat pipe for a heat exchanger
EP2299223A3 (en) * 2009-09-17 2013-12-11 Behr GmbH & Co. KG Flat pipe for a heat exchanger
EP2499919A1 (en) * 2011-03-17 2012-09-19 Förster Technik GmbH Conveying device

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