CN201475509U - Anti-corrosion tube with inner three-layer PE composite coating - Google Patents
Anti-corrosion tube with inner three-layer PE composite coating Download PDFInfo
- Publication number
- CN201475509U CN201475509U CN 200920143989 CN200920143989U CN201475509U CN 201475509 U CN201475509 U CN 201475509U CN 200920143989 CN200920143989 CN 200920143989 CN 200920143989 U CN200920143989 U CN 200920143989U CN 201475509 U CN201475509 U CN 201475509U
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- coating
- corrosion
- steel tube
- layer
- steel pipe
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Abstract
The utility model discloses an anti-corrosion tube with an inner three-layer PE composite coating. The inner surface of a steel tube is sequentially covered with an epoxy powder coating of 80 to 150 mu m, a middle adhesive powder coating of 100 to 150 mu m and a polyethylene powder coating of 200 to 300 mu m. Three layers of PE coatings are coated in the steel tube, the coatings in the steel tube change a single coating into a composite coating, the anti-corrosion tube has the characteristics of good combining effect of an anti-corrosion layer and a steel tube base body, good adhesion performance between layers, good performance of external coating and prolonged service life of the steel tube.
Description
Technical field
The utility model relates to a kind of anti-corrosion pipe, belongs to interior three layers of PE composite coating anti-corrosion pipe.
Technical background
Requirement for guaranteeing steel pipe transport gas, oil transportation and satisfying electric cable threading etc. prolongs its working life, generally adopts the practice of anticorrosive coating in the steel pipe.At present transportation pipe adopts liquid epoxy coating, penetration pipe to adopt to be coated with polyethylene coating in the steel pipe the most extensive.
Undercoating adopts liquid epoxy coating, though can tentatively satisfy fed sheet of a media drag reduction and corrosion-resistant requirement in the pipe, it is a normal temperature cure coating, combine low with steel pipe matrix chemical bond, under the long-time running state, coating is easy to the steel pipe matrix and comes off, and causes the steel pipe operational defect.In be coated with polyethylene coating, advantage has pliability, shock resistance, closes but only survey by physics with the steel pipe matrix, in the long-time running process, polyethylene layer easily and the delamination of steel pipe matrix.Three layers of PE coating of the interior employing of pipe are applied to the advantage of external anti-corrosion layer in the pipe, reduce single coating breakage in running in the pipe, come off.Adopting to apply epoxy powder, middle binder powder, polyethylene powders formation composite coating, is the best of breed coating that satisfies pipeline internal corrosion.
Summary of the invention
For overcoming the defective of existing interior liquid epoxy or polyethylene coating anti-corrosion pipe, the utility model provides a kind of interior three layers of PE composite coating anti-corrosion pipe, and this anti-corrosion pipe has the incomparable MULTILAYER COMPOSITE advantage that arrives of single coating in the pipe, prolongs the working life of steel pipe.
The technological scheme that the utility model adopted is:
A kind of interior three layers of PE composite coating anti-corrosion pipe, steel pipe internal-surface are coated with middle binder powder coating of epoxide powder coating layer, 100～150 μ m and 200～300 μ m polyethylene powders coatings of 80～150 μ m successively.
The utility model beneficial effect is:
The steel pipe inwall sprays epoxy powder, middle binder powder and polyethylene powders successively, interpenetrate fusion between powder and fully carry out the chemical bond combination, interlayer is combined, coating promptly possesses the combination force of FBE and steel pipe matrix, the pliability and the impact resistance that possess poly coating again, three kinds of materials possess multi-layer structure in conjunction with as a whole, and its performance is higher than the liquid epoxy or the polyethylene coating anti-corrosion pipe of single coating far away.
Description of drawings
Fig. 1 is the utility model structure cut-away view.
FBE in the 1-steel pipe among the figure, 2-, binder powder coating in the middle of the 3-, 4-polyethylene powders coating.
Embodiment
As shown in Figure 1, a kind of interior three layers of PE composite coating anti-corrosion pipe, steel pipe 1 is through oil removing, after grease removal and water etc. are handled, adopt ball blast or blasting technology to remove inner tube wall corrosion thing etc., adopt intermediate frequency or other modes to heat 1 to 200～220 ℃ of steel pipe again, utilize air powder feeding technology with epoxide powder coating, middle binder powder coating and polyethylene powder coating are sprayed on steel pipe 1 inwall according to certain intervals, at first fusion forms the FBE 2 of thickness 110 μ m, the binder powder of spraying continues under the effect of inner tube wall waste heat at the middle adhesive coating 3 of the FBE 2 surface formation 130 μ m of gel immediately, Pen Tu polyethylene powders deposits the polyethylene powders coating 4 that fusion forms 230 μ m on middle adhesive coating 3 following closely, and under steel pipe waste heat state, finish FBE 2 and solidify levelling, the fusion levelling of middle adhesive coating 3 and polyethylene coating 4, and interpenetrate between the powder coating, after cold definite shape, form a whole corrosion-inhibiting coating.
Because three layers of PE composite coating of steel pipe internal-surface, forming process has been utilized the self heat and the interval spraying method of heating steel pipe, different powder coating sprayings, fusion infiltration, the anticorrosive coat quality is higher than liquid epoxy coating of individual layer or monolayer polyethylene coating far away in the pipe that forms, increase washing away and the corrosion-resistant ability of steel pipe inwall, prolong the working life of steel pipe.
Claims (1)
1. three layers of PE composite coating anti-corrosion pipe in a kind is characterized in that: steel pipe (1) internal surface is coated with binder powder coating (3) and 200～300 μ m polyethylene powders coatings (4) in the middle of the FBE (2), 100～150 μ m of 80～150 μ m successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920143989 CN201475509U (en) | 2009-08-07 | 2009-08-07 | Anti-corrosion tube with inner three-layer PE composite coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920143989 CN201475509U (en) | 2009-08-07 | 2009-08-07 | Anti-corrosion tube with inner three-layer PE composite coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475509U true CN201475509U (en) | 2010-05-19 |
Family
ID=42411759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920143989 Expired - Fee Related CN201475509U (en) | 2009-08-07 | 2009-08-07 | Anti-corrosion tube with inner three-layer PE composite coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797927A (en) * | 2012-07-27 | 2012-11-28 | 联塑市政管道（河北）有限公司 | Novel pipe fitting and manufacturing method thereof |
| CN112046045A (en) * | 2020-09-01 | 2020-12-08 | 山东东宏管业股份有限公司 | Steel pipe with three anti-corrosion layers of inner layer and outer layer and preparation method and application thereof |
-
2009
- 2009-08-07 CN CN 200920143989 patent/CN201475509U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797927A (en) * | 2012-07-27 | 2012-11-28 | 联塑市政管道（河北）有限公司 | Novel pipe fitting and manufacturing method thereof |
| CN112046045A (en) * | 2020-09-01 | 2020-12-08 | 山东东宏管业股份有限公司 | Steel pipe with three anti-corrosion layers of inner layer and outer layer and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20110807 |