DE1914344A1 - Process for the continuous production of metal pipes coated with plastic on the inside - Google Patents
Process for the continuous production of metal pipes coated with plastic on the insideInfo
- Publication number
- DE1914344A1 DE1914344A1 DE19691914344 DE1914344A DE1914344A1 DE 1914344 A1 DE1914344 A1 DE 1914344A1 DE 19691914344 DE19691914344 DE 19691914344 DE 1914344 A DE1914344 A DE 1914344A DE 1914344 A1 DE1914344 A1 DE 1914344A1
- Authority
- DE
- Germany
- Prior art keywords
- plastic
- pipe
- metal
- hose
- coated
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
-
- 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
- B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
19U34419U344
Kabel- und Metallwerke Gutehoffnungshütte AktiengesellschaftCable and metal works Gutehoffnungshütte Aktiengesellschaft
1 9631 963
19. März 1969March 19, 1969
Verfahren zur kontinuierlichen Herstellung von innen mit Kunststoff beschichteten Metallrohren Zusatz zu Patent ... (Anm. P 19 01 507.7 - 1 939)Process for continuous production from the inside with plastic-coated metal pipes addendum to patent ... (note P 19 01 507.7 - 1 939)
Gegenstand des Hauptpatents ist ein Verfahren zur kontinuierlichen Herstellung von innen mit Kunststoff beschichteten Metallrohren für den Transport flüssiger oder gasförmiger, erwärmter oder gekühlter Medien, bei dem ein längseinlaufendes Metallband zu einem Schlitzrohr geformt, an seinen Bandkanten verschweißt und anschließend fortlaufend innen mit Kunststoff beschichtet wird. Auf diese Weise ist es möglich, "abweichend von den bisher üblichen Verfahren zur Innenbeschichtung von Rohren, praktisch beliebige Längen herzustellen. Darüberhinaus ist man nicht mehr unbedingt auf die teuren, relativ korrosionsbeständigen Metalle, wie beispielsweise Kupfer, angewiesen, sondern es können verhältnismäßig billige Materialien wie Stahl oder Aluminium zur Herstellung von Leitungsrohren herangezogen werden.The main patent is a process for continuous Manufacture of metal pipes coated with plastic on the inside for the transport of liquid or gaseous, heated or cooled media, in which a longitudinal metal belt Shaped into a slotted tube, welded at its band edges and then continuously coated on the inside with plastic. In this way it is possible "differently from the previous one customary processes for the internal coating of pipes, to produce practically any length. Beyond that one is no more necessarily rely on the expensive, relatively corrosion-resistant metals, such as copper, but it can be proportionate cheap materials such as steel or aluminum can be used to manufacture line pipes.
Die Erfindung befaßt sich mit einer weiteren vorteilhaften Ausgestaltung des Verfahrens nach dem Hauptpatent und sieht vor, daß zur Beschichtung des Metallrohres ein Kunststoffschlauch verwendet wird, der durch Erwärmen und/oder Druck bzw. Vakuum an der Innenwandung des Rohres zum Anliegen ge-The invention is concerned with a further advantageous embodiment of the method according to the main patent and provides suggest that a plastic hose is used to coat the metal pipe, which is heated and / or pressure or vacuum on the inner wall of the pipe
009840/0803009840/0803
19U34419U344
bracht wird. Neben dem hierdurch gebildeten Korrosionsschutz für das metallische Rohr bringt eine solche Anordnung insbesondere dann noch erhebliche Vorteile, wenn das Metallrohr zur Erzielung einer ausreichenden Flexibilität gewellt ist. Abgesehen davon, daß die Flexibilität durch den eingebrachten Kunststoffschlauch nicht beeinträchtigt wird, werden solche Rohre, die in großen Längen herstellbar sind, durch die Kunststoffschicht weitestgehend schwingungs- und geräuschdämpfend.is brought. In addition to the corrosion protection for the metallic pipe that is formed in this way, such an arrangement is particularly beneficial then there are still considerable advantages if the metal tube is corrugated to achieve sufficient flexibility. Apart from the fact that the flexibility is not impaired by the inserted plastic hose, such Pipes, which can be produced in great lengths, largely dampen vibrations and noise thanks to the plastic layer.
In Weiterführung des Erfindungsgedankens ist es auch möglich, und oft von besonderem Vorteil, den Kunststoffschlauch mit einer Außenpro filierung zu versehen, die sich in die Wellen des Metallrohres einlegt, so daß durch den zumindest annähernd erzielbaren kreisförmigen Querschnitt die Strömungsverluste erheblich herabgesetzt werden können. Ein solches Rohr hat damit sämtliche Vorteile eines gewellten und glatten Rohres, nämlich einmal die ausreichende Flexibilität, so daß das in großen Längen hergestellte Rohr auf Trommeln aufgewickelt werden kann und zum andern der durch die Innenbeschichtung mit dem profilierten Kunststoffschlauch herstellbare, annähernd kreisförmige Rohrquerschnitt, durch den die Strömungsverluste weitgehend herabgesetzt werden.In a continuation of the inventive concept, it is also possible and often of particular advantage to use the plastic hose to provide a Außenpro filierung, which is inserted into the waves of the metal pipe, so that by at least approximately achievable circular cross-section the flow losses can be significantly reduced. Such a pipe has all the advantages of a corrugated and smooth pipe, namely, sufficient flexibility so that the in Long pipe produced can be wound on drums and on the other hand by the inner coating Almost circular pipe cross-section that can be produced with the profiled plastic hose, through which the flow losses largely reduced.
Als Werkstoff für den gemäß der Erfindung verwendeten Kunststoffschlauch hat sich beispielsweise ein Kunststoff auf der Basis Polytetrafluorathylen als besonders vorteilhaft erwiesen. Dieser Werkstoff zeichnet sich u.a. durch &±ne weitestgehende chemische Beständigkeit sowie gute mechanische Festigkeit in einem weiten Temperaturbereich von etwa minus 19O bis plus 25O C aus. Anstelle dieses Kunststoffes, der auf die Innenwandung des Rohres auch durch Freisintern, Extrudieren oderA plastic based on polytetrafluoroethylene, for example, has proven to be particularly advantageous as a material for the plastic hose used according to the invention. This material is characterized, among other things ne widest possible chemical resistance and good mechanical strength in a wide temperature range of about minus 19O to 25O plus C by & ±. Instead of this plastic, which is applied to the inner wall of the pipe by free sintering, extrusion or
009840/0803009840/0803
19U344.19U344.
Beschichten au« einer Dispersion aufgebracht werden kann, kann man auch einen Kunststoff auf der Basis von fluoriertem Äthylen -Propylen verwenden, das unter dem Handelsnaaen Teflon-FEP bekannt ist.Coating can be applied on a dispersion, can you can also use a plastic based on fluorinated ethylene-propylene, which is known under the trade name Teflon-FEP.
Zur besseren Verbindung des KunststoffSchlauches mit der Innenwandung des Metallischen Mantels bzw. Rohres ist es auch Möglich, den Schlauch an seiner äußeren Oberfläche alt eine« geeigneten Kleber zu versehen, der bei Erwärmung eine sichere Verbindung mit dem Metall des Rohres liefert»For a better connection of the plastic hose with the inner wall of the metallic jacket or pipe, it is also possible to provide the hose with a suitable adhesive on its outer surface, which is reliable when heated Connection with the metal of the pipe provides »
Zur Durchführung des Verfahrens gemäß der Erfindung ist es beispielsweise Möglich, um einen längseinlaufenden Kunststoffschlauch auf der Basis von Polytetrafluoräthylen ein ebenfalls längseinlaufendes Metallband zu einem Rohr zu formen, an den Kanten zu verschweißen und anschließend einer Wellvorrichtung zuzuführen. Der gegebenenfalls mit einer Außenprofil ierung versehene Kunststoffschlauch wird dadurch zum Anliegen an der Innenwand des Metallrohres gebracht, daß mittels eines geeigneten Werkzeuges hinter dem Schweißpunkt beispielsweise erwärmte HeiSluft unter hohem Druck eingebracht wird.To carry out the method according to the invention, it is possible, for example, to shape a longitudinally running plastic hose based on polytetrafluoroethylene into a tube, also a longitudinally running metal band, to be welded at the edges and then fed to a corrugating device. The plastic hose optionally provided with an outer profile becomes the Brought to bear on the inner wall of the metal tube that, for example, heated hot air is introduced under high pressure by means of a suitable tool behind the welding point.
Man kann aber auch so vorgehen, daß durch geeignete Maßnahmen der Raum zwischen dem Metallrohr und dem Kunststoffschlauch evakuiert wird, so daS sich der Kunststoffschlauch an die Innenwand des Itofares anlegt. Die Verbindung zwischen Kunststoff und Metall kann noch dadurch verbessert werden, daß zusätzlich beispielsweise das Metallrohr erwärmt oder ein HeißluftstrOM durch den Kunststoffschlauch geführt wird. Des weiteren ist es Möglich, die Oberfläche des KunststoffSchlauches Mit einem geeigneten Kleber zu versehen, der eine feste Verbindung zwischen Kunststoff und Metall sicherstellt.But you can also proceed in such a way that the space between the metal pipe and the plastic hose is removed by suitable measures evacuated so that the plastic hose attaches to the Place the inner wall of the Itofares. The connection between plastic and metal can be further improved in that in addition, for example, the metal pipe is heated or a stream of hot air OM is passed through the plastic hose. Of It is also possible to use the surface of the plastic hose To be provided with a suitable adhesive that ensures a firm connection between plastic and metal.
- Ansprüche -- Expectations -
009840/0803009840/0803
Claims (5)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691914344 DE1914344A1 (en) | 1969-01-14 | 1969-03-21 | Process for the continuous production of metal pipes coated with plastic on the inside |
BE743121D BE743121A (en) | 1969-01-14 | 1969-12-15 | |
CH1938069A CH495521A (en) | 1969-01-14 | 1969-12-29 | Process for the continuous production of metal pipes coated with plastic on the inside and device for carrying out the process |
GB81370A GB1270081A (en) | 1969-01-14 | 1970-01-07 | Process for the continuous production of metal tubes coated internally with plastics material |
AT15470A AT297454B (en) | 1969-01-14 | 1970-01-08 | Process and arrangement for the continuous production of metal pipes coated with plastic on the inside |
NL7000439A NL7000439A (en) | 1969-01-14 | 1970-01-13 | |
FR7001223A FR2028312A1 (en) | 1969-01-14 | 1970-01-14 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691901507 DE1901507A1 (en) | 1969-01-14 | 1969-01-14 | Process for the continuous production of metal pipes coated with plastic on the inside |
DE19691914344 DE1914344A1 (en) | 1969-01-14 | 1969-03-21 | Process for the continuous production of metal pipes coated with plastic on the inside |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1914344A1 true DE1914344A1 (en) | 1970-10-01 |
Family
ID=25756843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691914344 Pending DE1914344A1 (en) | 1969-01-14 | 1969-03-21 | Process for the continuous production of metal pipes coated with plastic on the inside |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT297454B (en) |
BE (1) | BE743121A (en) |
CH (1) | CH495521A (en) |
DE (1) | DE1914344A1 (en) |
FR (1) | FR2028312A1 (en) |
GB (1) | GB1270081A (en) |
NL (1) | NL7000439A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1558043A (en) * | 1976-02-03 | 1979-12-19 | Onoda Cement Co Ltd | Metal squeeze out tube and method and apparatus for forming a powder layer on its surface |
DE3169794D1 (en) * | 1980-05-14 | 1985-05-15 | Bristol Composite Mat | Resin impregnator |
IE51095B1 (en) * | 1980-06-17 | 1986-10-01 | Gkn Group Services Ltd | Manufacture of composite-shafts |
FR2528876B1 (en) * | 1982-06-18 | 1986-07-04 | Ural I Trubnoi Promys | PROCESS FOR PRODUCING INTERIOR COATED METAL TUBES |
NO892736L (en) * | 1989-07-03 | 1991-01-04 | Hagtvedt Finn | FOAM FILLED STRUCTURAL ELEMENTS PRODUCED IN A CONTINUOUS PROCESS. |
DE10255632B4 (en) * | 2002-11-28 | 2005-03-17 | CCS Technology, Inc., Wilmington | Laying element for a message transmission element, method for producing such a laying element and method for laying a message transmission element |
-
1969
- 1969-03-21 DE DE19691914344 patent/DE1914344A1/en active Pending
- 1969-12-15 BE BE743121D patent/BE743121A/xx unknown
- 1969-12-29 CH CH1938069A patent/CH495521A/en not_active IP Right Cessation
-
1970
- 1970-01-07 GB GB81370A patent/GB1270081A/en not_active Expired
- 1970-01-08 AT AT15470A patent/AT297454B/en not_active IP Right Cessation
- 1970-01-13 NL NL7000439A patent/NL7000439A/xx unknown
- 1970-01-14 FR FR7001223A patent/FR2028312A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AT297454B (en) | 1972-03-27 |
BE743121A (en) | 1970-05-14 |
GB1270081A (en) | 1972-04-12 |
CH495521A (en) | 1970-08-31 |
FR2028312A1 (en) | 1970-10-09 |
NL7000439A (en) | 1970-07-16 |
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