DE1127257B - Process for the production of protective coatings on metallic bodies, e.g. Pipes, by applying epoxy resins in powder form - Google Patents
Process for the production of protective coatings on metallic bodies, e.g. Pipes, by applying epoxy resins in powder formInfo
- Publication number
- DE1127257B DE1127257B DEM39236A DEM0039236A DE1127257B DE 1127257 B DE1127257 B DE 1127257B DE M39236 A DEM39236 A DE M39236A DE M0039236 A DEM0039236 A DE M0039236A DE 1127257 B DE1127257 B DE 1127257B
- Authority
- DE
- Germany
- Prior art keywords
- pipes
- protective coatings
- production
- epoxy resins
- powder form
- 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
- B05D7/14—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
-
- 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
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- 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
- B05D1/12—Applying particulate materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
M 39236 VIb/75 cM 39236 VIb / 75 c
BEKANNTMACHUNO DER ANMELDUNO UNDAUSGABEDER AUSLEGESCHRIFT: 5. A P R I L 1962ANNOUNCED MACHUNO THE REGISTRATION ANDOUTPUTE EDITORIAL: 5. A P R I L 1962
Die Erfindung bezieht sich auf die Herstellung von Schutzüberzügen auf metallischen Körpern, ζ. Β. Rohren, und bezweckt die Schaffung eines neuartigen, mit geringem Aufwand durchführbaren Verfahrens, welches besonders hochwertige Schutzüberzüge ergibt.The invention relates to the production of protective coatings on metallic bodies, ζ. Β. Pipes, and aims to create a novel process that can be carried out with little effort, which results in particularly high-quality protective coatings.
Es ist vielfach bekannt, Kunststoffe für die Herstellung von Schutzüberzügen zu verwenden. In der Regel werden die Kunststoffe in Lösung als Lacke auf die zu schützenden Flächen aufgetragen. Es ist auch bekannt, thermoplastische Kunststoffe, z. B. Polyäthylen oder Polyamide, in Pulverform auf die zu schützenden Flächen aufzubringen und durch Wärmeeinwirkung zur Bildung zusammenhängender Schichten zu schmelzen. Auch hat man schon versucht, Schutzüberzüge aus Epoxyharz, also einem härtbaren Kunststoff, zu erzeugen, und zwar durch das sogenannte Wirbelsinterverfahren. Hierbei muß der vorgewärmte Metallkörper in eine große Menge des Kunstharzpulvers eingetaucht und bewegt werden, so daß er Wärme an das angrenzende Kunstharzpulver abgibt und dieses zum Aushärten bringt. Eine Dosierung der die Schutzschicht bildenden Menge des Kunstharzpulvers ist hierbei nicht möglich.It is widely known to use plastics for the production of protective coatings. In the As a rule, the plastics are applied in solution as lacquers to the surfaces to be protected. It is also known thermoplastics, e.g. B. polyethylene or polyamides, in powder form on the to apply surfaces to be protected and through the action of heat to form cohesive ones Melt layers. Attempts have also been made to make protective coatings made of epoxy resin, i.e. a curable plastic, to be produced by the so-called fluidized bed sintering process. Here must the preheated metal body is immersed in a large amount of the synthetic resin powder and moved, so that it gives off heat to the adjacent synthetic resin powder and causes it to harden. One Dosing of the amount of synthetic resin powder forming the protective layer is not possible here.
Die durch die bekannten Verfahren erzeugten Schutzschichten genügen in vielen Fällen nicht den zu stellenden Anforderungen hinsichtlich ihrer Beständigkeit gegen mechanische, chemische und thermische Einflüsse. Man hat versucht, die Eigenschaften der Überzüge durch Einbetten von mineralischen Faserstoffen, z. B. Glasfasern, zu verbessern. Den dadurch erzielten Vorteilen steht jedoch ein bedeutender Mehraufwand gegenüber. Ein schwerwiegender Nachteil dieser Maßnahme ist außerdem die Gefahr der Entstehung von Lufteinschlüssen in den Schutzschichten. The protective layers produced by the known methods are in many cases not sufficient requirements to be made with regard to their resistance to mechanical, chemical and thermal Influences. Attempts have been made to improve the properties of the coatings by embedding mineral Fibrous materials, e.g. B. glass fibers to improve. However, the advantages achieved in this way stand out for a significant one Additional effort compared to. Another serious disadvantage of this measure is the danger the formation of air pockets in the protective layers.
Ausgehend von der Herstellung von Schutzüberzügen durch Aufbringen pulverförmiger Epoxyharze auf die erhitzten Flächen der Metallkörper, wird erfindungsgemäß das Pulver als Vorkondensat eines Epoxyharz-Härter-Gemisches auf die zu schützenden erhitzten Flächen in an sich bekannter Weise kalt aufgesprüht. Als Härter kann z. B. ein Aminhärter verwendet werden. Das Aushärten des auf die erhitzten Flächen aufgesprühten Vorkondensats vollzieht sich ohne Abspaltung flüchtiger Bestandteile bei einer Temperatur von 150 bis 180° C in wenigen Minuten. Durch eine zusätzliche Wärmebehandlung kann das Aushärten beschleunigt werden. Es lassen sich auf diese Weise Schutzschichten mit bisher unerreichten mechanischen, chemischen und elektrischenStarting with the production of protective coatings by applying epoxy resins in powder form on the heated surfaces of the metal body, according to the invention, the powder is used as a precondensate Cold epoxy resin-hardener mixture on the heated surfaces to be protected in a known manner sprayed on. As a hardener z. B. an amine hardener can be used. The curing of the heated Precondensate sprayed on surfaces takes place without splitting off volatile constituents at a temperature of 150 to 180 ° C in a few minutes. Through an additional heat treatment curing can be accelerated. It can be used in this way protective layers with previously unattainable mechanical, chemical and electrical
Verfahren zur Herstellung
von Schutzüberzügen auf metallischenMethod of manufacture
of protective coatings on metallic
Körpern, z. B. Rohren,Bodies, e.g. B. pipes,
durch Aufbringen pulverförmigerby applying powdery
EpoxyharzeEpoxy resins
Anmelder:Applicant:
Mannesmann Aktiengesellschaft,
Düsseldorf, Mannesmannufer IbMannesmann Aktiengesellschaft,
Düsseldorf, Mannesmannufer Ib
Walter Stucke, Düsseldorf-Grafenberg,
ist als Erfinder genannt wordenWalter Stucke, Düsseldorf-Grafenberg,
has been named as the inventor
Eigenschaften erzeugen, die außerordentlich fest und dauerhaft auf den Flächen haften und Temperaturen zwischen —20 und +100° C vertragen.Produce properties that adhere extremely firmly and permanently to the surfaces and temperatures tolerated between -20 and + 100 ° C.
Die praktische Durchführung des Verfahrens ist sehr einfach. Das Aufsprühen des pulverförmigen Vorkondensats des Epoxyharz-Härter-Gemisches auf die zu schützenden, auf die erforderliche Temperatur erhitzten Flächen kann in der gewöhnlichen Atmosphäre, gegebenenfalls unter Anwendung eines elektrischen Feldes, erfolgen. Das Verfahren kann kontinuierlich durchgeführt werden. Beispielsweise können Rohre mittels einer Fördervorrichtung in ununterbrochener Folge durch eine Heizeinrichtung und anschließend durch eine zum Aufsprühen des Pulvers dienende Vorrichtung hindurchgeführt werden.The practical implementation of the procedure is very simple. Spraying the powdery Pre-condensate of the epoxy resin-hardener mixture to the temperature to be protected, to the required temperature Heated surfaces can be in the ordinary atmosphere, if necessary using an electric Field. The process can be carried out continuously. For example, can Pipes by means of a conveyor in uninterrupted sequence through a heating device and are then passed through a device serving for spraying the powder.
Claims (1)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM39236A DE1127257B (en) | 1958-10-04 | 1958-10-04 | Process for the production of protective coatings on metallic bodies, e.g. Pipes, by applying epoxy resins in powder form |
GB3159259A GB927287A (en) | 1958-10-04 | 1959-09-16 | The production of protective coatings on metal articles |
CH7874259A CH372956A (en) | 1958-10-04 | 1959-09-28 | Process for the production of protective coatings on metallic bodies |
FR806604A FR1236947A (en) | 1958-10-04 | 1959-10-02 | Process for the preparation of protective coatings on metal parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM39236A DE1127257B (en) | 1958-10-04 | 1958-10-04 | Process for the production of protective coatings on metallic bodies, e.g. Pipes, by applying epoxy resins in powder form |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1127257B true DE1127257B (en) | 1962-04-05 |
Family
ID=7303348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM39236A Pending DE1127257B (en) | 1958-10-04 | 1958-10-04 | Process for the production of protective coatings on metallic bodies, e.g. Pipes, by applying epoxy resins in powder form |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH372956A (en) |
DE (1) | DE1127257B (en) |
FR (1) | FR1236947A (en) |
GB (1) | GB927287A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247004A (en) * | 1962-06-26 | 1966-04-19 | Minnesota Mining & Mfg | Method and apparatus for coating stators |
DE2948898A1 (en) * | 1979-02-20 | 1980-08-28 | Socomo & Socotub Reunies | METHOD FOR THE INTERIOR AND EXTERIOR COATING OF TUBES AND SYSTEM FOR IMPLEMENTING THE METHOD |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2190858B (en) * | 1986-04-25 | 1989-11-29 | Smith Meters Ltd | Coating surfaces |
FR2638466B1 (en) * | 1988-11-03 | 1993-05-07 | Atochem | PROCESS FOR COATING METAL SUBSTRATES USING A POWDER PRIMER AND A DIP APPLIED COATING, POWDER PRIMER COMPOSITIONS USED AND COMPOSITE MATERIALS OBTAINED |
-
1958
- 1958-10-04 DE DEM39236A patent/DE1127257B/en active Pending
-
1959
- 1959-09-16 GB GB3159259A patent/GB927287A/en not_active Expired
- 1959-09-28 CH CH7874259A patent/CH372956A/en unknown
- 1959-10-02 FR FR806604A patent/FR1236947A/en not_active Expired
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247004A (en) * | 1962-06-26 | 1966-04-19 | Minnesota Mining & Mfg | Method and apparatus for coating stators |
DE2948898A1 (en) * | 1979-02-20 | 1980-08-28 | Socomo & Socotub Reunies | METHOD FOR THE INTERIOR AND EXTERIOR COATING OF TUBES AND SYSTEM FOR IMPLEMENTING THE METHOD |
Also Published As
Publication number | Publication date |
---|---|
CH372956A (en) | 1963-10-31 |
FR1236947A (en) | 1960-07-22 |
GB927287A (en) | 1963-05-29 |
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