CN103556102A - Method for protecting surface of lightening-protection aluminum coating - Google Patents
Method for protecting surface of lightening-protection aluminum coating Download PDFInfo
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- CN103556102A CN103556102A CN201310541128.4A CN201310541128A CN103556102A CN 103556102 A CN103556102 A CN 103556102A CN 201310541128 A CN201310541128 A CN 201310541128A CN 103556102 A CN103556102 A CN 103556102A
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- aluminum coating
- coating
- aluminum
- varnish
- chemical oxidation
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Abstract
The invention belongs to corrosion prevention applied technology, and relates to a method for protecting a surface of a lightening-protection aluminum coating, which can be used is fields such as aviation, spaceflight, and construction. The method comprises steps of (1) spraying an aluminum coating on the surface of the exterior of a composite piece by a flame spraying technology, wherein the thickness of the aluminum coating is 100-305 mum; (2) allowing the surface of the composite piece with the aluminum coating to face downward, coating alodine on the surface of the aluminum coating once so as to form a chemical oxidation membrane; (3) overturning the surface with the aluminum coating upward, coating varnish once for sealing holes; and (4) sequentially coating primary coat and finishing coat on the surface of the varnish. According to the method, the chemical oxidation protective membrane can be sprayed on the surface of the aluminum coating through flame spraying, so that the surface corrosion resistance of the aluminum coating is improved, and the binding force between the aluminum coating and the paint coating can be improved. Furthermore, the chemical oxidation membrane is extremely thin, so that the pretreated organic coating is saved, and method has certain effect in reducing weight.
Description
Technical field
The invention belongs to corrosion prevention utilisation technology, relate to a kind of lightning protection aluminum coating process for protecting surface, can be used for the fields such as Aeronautics and Astronautics, building.
Background technology
All there is the problem of anti-lightning strike protection in the matrix material using on aircraft; in the situation that anti-lightning strike protection adopts flame plating aluminum coating; corrosion prevention treatment process to aluminum coating; at present; only directly on aluminum coating surface, to be coated with one deck pre-treatment organic coating (as 508S etc.); sticking power in order to increase with paint coating, is coated with afterwards one deck varnish, then primes and finish paint.Because aluminum coating does not pass through anodizing or chemical oxidation treatment, cause its corrosion protection to be starkly lower than the minimum requirement of shelter of aluminium alloy.
Summary of the invention
The object of the invention is to propose the lightning protection aluminum coating process for protecting surface that a kind of corrosion protection is good.
Technical scheme of the present invention is:
(1) at composite product outer surface, adopt the aluminum coating of flame plating technique spraying a layer thickness approximately 100～305 μ m;
(2) composite product is faced down with one of aluminum coating, make the angle between itself and horizontal plane be not more than 45 °, then at aluminum coating surface uniform, brush a A Luoding, on aluminum coating surface, form chemical oxide film (this operation can prevent that A Luoding solution from infiltrating and being stranded in the hole of aluminum coating, causes aluminum coating internal corrosion);
(3) on the aluminum coating surface with chemical oxide film, be coated with a varnish with sealing of hole by the one side upset with aluminum coating upward;
(4) on varnish surface, prime successively, finish paint.
Advantage and beneficial effect that the present invention has are: the present invention is for the surfacecti proteon of aircraft outside surface matrix material aluminum coating; can obtain one deck chemical oxidation protective membrane on the flame plating aluminum coating surface of composite product; this protective membrane can obviously improve the solidity to corrosion on aluminum coating surface; improve the bonding force between aluminum coating and paint coating simultaneously; thereby guaranteeing under the prerequisite of anti-lightning strike effect; effectively improve the corrosion resisting property of matrix material spraying alumiaum article, finally improve the Corrosion Protection of complete machine.Also there is certain weight loss effect.
The method had overcome in the past does not carry out surface oxidation to flame plating aluminum coating, and it is poor to be directly coated with between painting aluminium lamination that organic coating causes and paint film bonding force, and then cause the whole Corrosion Protection of matrix material flame plating alumiaum article poor and cause the problems such as paint film spalling because of organic coating thickness great Yi.
Accompanying drawing explanation
Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present invention;
Fig. 2 is the Structure Comparison decomposing schematic representation of the present invention (a) and traditional protection method (b);
Fig. 3 is the station schematic diagram while brushing A Luoding in one embodiment of the invention.
Embodiment
The process for protecting surface of the matrix material lightning protection aluminum coating that the present invention proposes, the main points of present method are to apply A Luoding---aluminum alloy chemically oxidizing solution.With reference to Fig. 1, its concrete implementation step is as follows:
1. the outer surface 3(that chooses composite product 1 is different from internal surface 2);
2. at this outer surface, adopt the aluminum coating 4 of flame plating technique spraying a layer thickness approximately 100 μ m～305 μ m;
3. this product is overturn down with the one side of aluminum coating, then on aluminum coating surface, brush a A Luoding, formation chemical oxide film 5 after reaction;
4. be painted with A Luoding and dry after, by the one side upset with aluminum coating (Fig. 3) upward, be coated with a varnish 6 with sealing of hole;
5. on varnish surface, prime successively 7, finish paint 8.
Claims (1)
1. a lightning protection aluminum coating process for protecting surface, is characterized in that:
(1). at composite product outer surface, adopt flame spraying method spraying one deck aluminum coating, the thickness of aluminum coating is 100～305 μ m;
(2). composite product is faced down with one of aluminum coating, at aluminum coating surface uniform, brush a A Luoding, form aluminum alloy chemically oxide film;
(3). composite product is overturn upward with the one side of aluminum coating, on the aluminum coating surface that forms aluminum alloy chemically oxide film, be coated with a varnish sealing of hole;
(4). on varnish surface, prime successively, finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541128.4A CN103556102A (en) | 2013-11-05 | 2013-11-05 | Method for protecting surface of lightening-protection aluminum coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541128.4A CN103556102A (en) | 2013-11-05 | 2013-11-05 | Method for protecting surface of lightening-protection aluminum coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103556102A true CN103556102A (en) | 2014-02-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310541128.4A Pending CN103556102A (en) | 2013-11-05 | 2013-11-05 | Method for protecting surface of lightening-protection aluminum coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103556102A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182973A (en) * | 2018-09-30 | 2019-01-11 | 西安航空制动科技有限公司 | A kind of preparation method of coating for protection against corrosion |
| CN111942613A (en) * | 2020-07-16 | 2020-11-17 | 国营芜湖机械厂 | In-situ corrosion prevention process for airplane aluminum alloy component after crack cold spraying reinforcement repair |
| CN114107870A (en) * | 2021-11-22 | 2022-03-01 | 成都飞机工业（集团）有限责任公司 | Flame aluminum spraying method for composite skin part |
| CN116200734A (en) * | 2023-03-14 | 2023-06-02 | 广东省科学院新材料研究所 | Method for improving corrosion resistance of tungsten carbide-cobalt coating, corrosion resistant coating and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999031294A1 (en) * | 1997-12-12 | 1999-06-24 | Henkel Kommanditgesellschaft Auf Aktien | Conductive anti-corrosive agent containing chrome and anti-corrosive method |
| CN102586775A (en) * | 2012-01-18 | 2012-07-18 | 上海交通大学 | Surface preservative treatment method for aviation aluminium alloy material |
-
2013
- 2013-11-05 CN CN201310541128.4A patent/CN103556102A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999031294A1 (en) * | 1997-12-12 | 1999-06-24 | Henkel Kommanditgesellschaft Auf Aktien | Conductive anti-corrosive agent containing chrome and anti-corrosive method |
| CN102586775A (en) * | 2012-01-18 | 2012-07-18 | 上海交通大学 | Surface preservative treatment method for aviation aluminium alloy material |
Non-Patent Citations (1)
| Title |
|---|
| 曹慧明等: "航空铝合金结构表面的阿洛丁处理方法", 《航空维修与工程》, 31 January 2012 (2012-01-31), pages 54 - 55 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182973A (en) * | 2018-09-30 | 2019-01-11 | 西安航空制动科技有限公司 | A kind of preparation method of coating for protection against corrosion |
| CN111942613A (en) * | 2020-07-16 | 2020-11-17 | 国营芜湖机械厂 | In-situ corrosion prevention process for airplane aluminum alloy component after crack cold spraying reinforcement repair |
| CN114107870A (en) * | 2021-11-22 | 2022-03-01 | 成都飞机工业（集团）有限责任公司 | Flame aluminum spraying method for composite skin part |
| CN116200734A (en) * | 2023-03-14 | 2023-06-02 | 广东省科学院新材料研究所 | Method for improving corrosion resistance of tungsten carbide-cobalt coating, corrosion resistant coating and application thereof |
| CN116200734B (en) * | 2023-03-14 | 2024-02-02 | 广东省科学院新材料研究所 | Method for improving corrosion resistance of tungsten carbide-cobalt coating, corrosion resistant coating and application thereof |
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Application publication date: 20140205 |