DE2354164A1 - Continuous plastics-coating lacquering or painting seamed pipe - with pipe except edge weld zones coated before welding, then afterward in weld zone - Google Patents
Continuous plastics-coating lacquering or painting seamed pipe - with pipe except edge weld zones coated before welding, then afterward in weld zoneInfo
- Publication number
- DE2354164A1 DE2354164A1 DE19732354164 DE2354164A DE2354164A1 DE 2354164 A1 DE2354164 A1 DE 2354164A1 DE 19732354164 DE19732354164 DE 19732354164 DE 2354164 A DE2354164 A DE 2354164A DE 2354164 A1 DE2354164 A1 DE 2354164A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- coated
- coating
- lacquered
- temperature
- 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
- B05D7/222—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 of pipes
-
- 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
- B05D7/14—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 metal, e.g. car bodies
- B05D7/146—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 metal, e.g. car bodies to metallic pipes or tubes
-
- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- 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
- B05D2202/00—Metallic substrate
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
- B05D3/0245—Pretreatment, e.g. heating the substrate with induction heating
Abstract
Description
Verfahren zum kontinuierlichen Überziehen von Stahl—/NE-Rohren und Hohlprofilen mit Kunststoffen, Lacken und Farben.Process for the continuous coating of steel / non-ferrous pipes and hollow profiles with plastics, lacquers and paints.
Das Überziehen von Stahl- oder HE- Rohren und Hohlprofilen mit Kunststoffen, Lacken oder weiterer geeigneter Medien, gewinnt vor allem auf dem Sektor Korrisionsschutz immer mehr an Bedeutung.The coating of steel or HE pipes and hollow profiles with plastics, paints or other suitable media, Always wins, especially in the corrosion protection sector more important.
Bei bisherigen Verfahren ist es üblich, die Rohre nach dem eigentlichen Herstellungsprozeß in getrennten, teilweise örtlich von einander entfernt liegenden separaten Anlagen zu beschichten. Dieses System bedeutet einen großen Investitionsaufwand und kostenreiche Transporte. Erfindungsgemäß wird deshalb vorgeschlagen, die eigentliche . Beschichtung der Stahl/NE-Rohre und Hohlprofile direkt während der eigentlichen Rohrherstellung in nur einer jSesamtanlage vorzunehmen. Diese Aufgabe wird dadurch gelöst, daß ein auf technisch bekannten Anlagen bereits entsprechend beschichtetes Stahl/IIE-Band in einer ebenfalls bekannten Längsoder Spiralrohranlage zunächst zum Schlitz- und anschließend zum geschweißten Rund- oder Profilrohr gefertigt wird.In previous methods, it is common to use the pipes after actual manufacturing process in separate, sometimes spatially distant, separate plants to coat. This system means a large investment and costly transports. According to the invention it is therefore proposed that the actual. Coating of the steel / non-ferrous pipes and hollow profiles directly during the actual pipe production in just one complete system to undertake. This object is achieved in that an already appropriately coated on technically known systems Steel / IIE tape in a also known longitudinal or Spiral pipe system is first made into a slot and then into a welded round or profile pipe.
Während der Bezug des Einsatzbandes mit Kunststoffen, Lacken oder Farben erfahrungsgemäß den Einformvorgang übersteht, verbrennt im Bereich der erhitzten Bandkanten während des Schweißvorganges der gewählte Überzug des Bandes und läßt dadurch im Bereich der inneren und äußeren Schweißnaht ein zerstörtes Ummantelungsmaterial zurück.During the covering of the insert band with plastics, lacquers or colors, based on experience, survive the molding process, burns in the area of the heated band edges during the welding process and leaves the selected coating of the band as a result, a destroyed sheathing material is returned in the area of the inner and outer weld seam.
Erfindungsgemäß wird dieses Problem dadurch gelöst, daß das als Grundmaterial eingesetzte entsprechend beschichtete Band an den Bandkanten vom überzug frei bleibt. Der Abstand dieser freien Zone an' den zur Verschweißung kommenden Bandkanten richtet sich nach dem zur Anwendung kommenden Schweißverfahren, wie z.B. der Hochfrequenz- oder der WIG- Schweißung. Durch diese Maßnahme werden metallisch saubere Kanten verschweißt und eine Verbrennung oder Beschädigung des benachbarten Überzuges vermieden.According to the invention this problem is solved in that the The appropriately coated tape used as the base material remains free from the coating at the tape edges. The distance of this free zone on the band edges coming to be welded depends on the welding process used, such as high-frequency or TIG welding. This measure welds clean metallic edges and burns or damages the neighboring one Coating avoided.
50982 0/043850982 0/0438
-A,-A,
Der im geschweißten Rohr im Bereichder Schweißnaht innen und außen liegende nicht beschichtete Streifen wird erfindungsgemäß nach dem Schweißen am entsprechend wärmekontrollierten Rohr während des kontinuierlichen Durchlaufens des Rohres gleichzeitig innen und außen mit demselben Material wie das des Einsatzbandes überzogen.The non-coated strip lying inside and outside in the welded pipe in the area of the weld seam is according to the invention after welding on the correspondingly heat-controlled pipe during continuous passage of the tube covered inside and outside with the same material as that of the insert tape.
Erfindungsgemäß werden deshalb innen und außen mit einem entsprechenden Abstand zum Schweißpunkt geeignete, technisch bekannte elektrostatische Beschichtungs- oder Hochleistungslack- oder Farbpistolen bzw. Düsen oder entsprechende Sprühgeräte angebracht, die den noch freien Streifen außen und innen im Bereich der Rohrschweißnaht während des kontinuierlichen Durchlaufens beschichten bzw. besprühen.According to the invention are therefore inside and outside with a appropriate distance to the welding point suitable, technically known electrostatic coating or high-performance paint or paint guns or nozzles or corresponding spray devices attached to the still free strips outside and inside in the area of the pipe weld seam during coating or spraying of the continuous flow.
Um die für die Aufbringung der entsprechenden Überzüge geeignete Temperatur des. Rohrmaterialstreifens zu garantieren, ist zwischen dem Schweißpunkt und den Aufbringungsgerät en für den äußeren und inneren Überzug eine Wasserkühlstrecke angebracht, die erfindungsgeraäß so gestaltet ist, daß über die Zu- oder Abschaltung einzelner Streckenabschnitte die richtige Temperatur des durchlaufenden Rohres eingehalten wird.In order to guarantee the appropriate temperature of the pipe material strip for the application of the corresponding coatings, is between the spot weld and the applicator en attached a water cooling section for the outer and inner coating, which is designed according to the invention, that via the connection or disconnection of individual route sections the correct temperature of the pipe running through is adhered to.
Die Steuerung dieser Wasserkühlung erfolgt über eine Temperaturmeßeinrichtung, die unmittelbar vor den Überzug-Aufbringungsgeräten positioniert ist, und entsprechend eines gewählten Temperatursolls über technisch bekannte Steuer- und Regelorgane die notwendige Wasserzufuhr bestimmt.The control of this water cooling takes place via a temperature measuring device, those immediately in front of the coating applicators is positioned, and according to a selected temperature setpoint via technically known control and regulating organs determine the necessary water supply.
Ein Ausführungsbeispiel der Erfindung ist in der beigefügten Zeichnung dargestellt und wird im Folgenden näher beschrieben. An embodiment of the invention is shown in the accompanying drawing and is described in more detail below.
Figur 1 zeigt in Seitenansicht eine schematische Darstellung der Geaamtanlage.FIG. 1 shows a schematic representation of the overall system in a side view.
Das bis auf einen Bereich an den Bandkanten kunststofflack- oder farbbeschichtete Einsatzband 1) wird mittels der Formrollen 2), 3), 4) zum Rohr 5) umgeformt. Die Schweißrollen 6) bewirken ein Schließen des Schlitzrohres und einThe insert tape 1), which is coated with plastic lacquer or color except for one area on the tape edges, is removed by means of the Forming rolls 2), 3), 4) formed into a tube 5). The welding rollers 6) cause the open-ended tube to close and a
509820/0438509820/0438
- φ— -I. . - φ— -I . .
Zusammenpressen der Bandkanten, die beim Durchlaufen des Ringinduktors 7)t der hier beispielsweise gewählten Hochfrequenzschweißung, auf Schweißtemperatur gebracht werden. Das innere Beschichtungsgerät 8) ist am Rohr 9) befestigt, das beispielsweise im Bereich der Formrollen 4) in das noch offene Rohr 5) geführt wird und als Tragelement für das Beschichtungsgerät 8) und dessen notwendigen Versorgungsleitungen dient. Aus geeignetem Material bestehende Zentrierungsscheiben 10) bestimmen die richtige Mitten- und Höhenlage des Gerätes 8) und schützen den inneren Bereich des Gerätes 8) beispielsweise vor Wasserdampf. Das äußere Beschichtungsgerät 11) ist höhenverstellbar befestigt und paßt sich dadurch den verschiedenen Rohrdurchmessern an. Die Kühlstrecke 1.2) wird über automatisch arbeitende Ventilregler 1J), 14-), 15) derart gesteuert, daß die vom Temperaturmesser 16) vorgegebenen Sollwerte am durchlaufendem Rohr 5) im Bereich der Geräte 8) und 11) gewährleistet sind. Eine vor dem Temperaturmesser 16) angeordnete Luftdüse 17) sorgt dafür, daß die Oberfläche des zu überziehenden Nahtstreifens trocken und sauber ist. Der Nahtabnehmer 18) schabt vorher auf technisch bekannte Weise den sich bildenden Schweißgrat ab. Analog zu diesem Verfahren erfolgt das Überziehen von Rohren, die auf Spiralrohranlagen hergestellt werden.Compression of the strip edges, which are brought to welding temperature when passing through the ring inductor 7) t of the high-frequency welding selected here, for example. The inner coating device 8) is attached to the pipe 9), which is guided, for example, in the area of the forming rollers 4) into the still open pipe 5) and serves as a support element for the coating device 8) and its necessary supply lines. Centering disks 10) made of suitable material determine the correct central and height position of the device 8) and protect the inner area of the device 8), for example from water vapor. The outer coating device 11) is attached in a height-adjustable manner and thus adapts to the various pipe diameters. The cooling section 1.2) is controlled by automatically operating valve regulators 1J), 14-), 15) in such a way that the setpoints given by the temperature meter 16) on the continuous pipe 5) in the area of the devices 8) and 11) are guaranteed. An air nozzle 17) arranged in front of the temperature meter 16) ensures that the surface of the seam strip to be covered is dry and clean. The seam remover 18) previously scrapes off the weld burr that is forming in a technically known manner. In the same way as this process, the coating of pipes that are manufactured on spiral pipe systems is carried out.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732354164 DE2354164A1 (en) | 1973-10-29 | 1973-10-29 | Continuous plastics-coating lacquering or painting seamed pipe - with pipe except edge weld zones coated before welding, then afterward in weld zone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732354164 DE2354164A1 (en) | 1973-10-29 | 1973-10-29 | Continuous plastics-coating lacquering or painting seamed pipe - with pipe except edge weld zones coated before welding, then afterward in weld zone |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2354164A1 true DE2354164A1 (en) | 1975-05-15 |
Family
ID=5896751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732354164 Pending DE2354164A1 (en) | 1973-10-29 | 1973-10-29 | Continuous plastics-coating lacquering or painting seamed pipe - with pipe except edge weld zones coated before welding, then afterward in weld zone |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2354164A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064776A1 (en) * | 1981-04-29 | 1982-11-17 | Rheinisches Zinkwalzwerk GMBH & Co. KG | Process for protecting down pipes , pipe bends or the like from corrosion by roof drainage systems |
WO1985001895A1 (en) * | 1983-11-02 | 1985-05-09 | Reinhard Rohrbau Gmbh & Co. Kg | Process and apparatus for coating the inner surface of a pipe |
EP0603456A1 (en) * | 1992-12-24 | 1994-06-29 | Elpatronic Ag | Process, apparatus and coating material for coating can seams |
-
1973
- 1973-10-29 DE DE19732354164 patent/DE2354164A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064776A1 (en) * | 1981-04-29 | 1982-11-17 | Rheinisches Zinkwalzwerk GMBH & Co. KG | Process for protecting down pipes , pipe bends or the like from corrosion by roof drainage systems |
WO1985001895A1 (en) * | 1983-11-02 | 1985-05-09 | Reinhard Rohrbau Gmbh & Co. Kg | Process and apparatus for coating the inner surface of a pipe |
EP0603456A1 (en) * | 1992-12-24 | 1994-06-29 | Elpatronic Ag | Process, apparatus and coating material for coating can seams |
WO1994014546A1 (en) * | 1992-12-24 | 1994-07-07 | Elpatronic Ag | Process for coating can seams |
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