CN206553617U - Electric arc spraying composite anti-corrosive coating structure - Google Patents
Electric arc spraying composite anti-corrosive coating structure Download PDFInfo
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- CN206553617U CN206553617U CN201621478926.2U CN201621478926U CN206553617U CN 206553617 U CN206553617 U CN 206553617U CN 201621478926 U CN201621478926 U CN 201621478926U CN 206553617 U CN206553617 U CN 206553617U
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Abstract
The utility model discloses a kind of electric arc spraying composite anti-corrosive coating structure, in steel construction base material（1）Surface is by inner and be sequentially provided with electric arc spraying zinc-copper-titanium alloy coating outside（2）, arc spraying aluminum coatings（3）, close lacquer coat（4）, and topcoat（5）；The electric arc spraying zinc-copper-titanium alloy coating（2）The silk material used is zinc-copper-titanium alloy silk, and the component and its percetage by weight of this thread is as follows：Ti：0.25‑0.4%、Cu：0.25 0.35%, surplus is Zn, and Ti purity ＞ 99.2%, Cu purity ＞ 99.9%, Zn purity ＞ 99.9%；The arc spraying aluminum coatings（3）The silk material used is aluminium wire, and Al purity is 99.99%.In this way, greatly extending the corrosion resistant time limit of steel construction and service life.
Description
Technical field
The utility model is related to a kind of corrosion-inhibiting coating structure, more particularly to a kind of electric arc spraying composite anti-corrosive coating structure,
Belong to technical field of anticorrosion.
Background technology
At present, with China's economic construction and the continuous fast development of national economy, all kinds of large-scale outdoor structural steelworks
Quantity is also increased sharply, but these outdoor steel constructions are easy to get rusty and are corroded by natural environment effect.Every year because of corrosion
The steel of loss account for 1/10th of world steel annual production, and it is very huge that it, which causes damage,.Issued according to the U.S.
Seven times corrosion loss survey report is shown：The U.S. accounts for national economy total yield because of the direct economic loss that corrosion is brought since 1998
The 3.1% of value.China does many countries as iron and steel output in the world, every year because steel corrosion and caused by loss about 1 hundreds of millions
Member, the economic loss summation significantly larger than caused due to natural calamity.Therefore, steel anti-corrosion is always materials industry research
Problem.
Electric arc spraying is presently the most conventional steel construction long-life anti-corrosion method, and material therefor mainly has Zn, Al
Silk and Zn-Al alloy silk, their protection mechanism to steel construction piece include：1. buffer action is closed；2. by coating material certainly
I sacrifices the cathodic protection effect of realization；3. form oxide-film and play a part of passivation protection.But in actual application, also
Have the following disadvantages：
（1）The corrosion product of Zn coatings is soluble, and can cause coating foaming, and the combination of reduction coating and steel substrate is strong
Degree, causes the corrosion-resistant life of coating to shorten.In addition, in arc spray process, the zinc particles of high atomisation can be caused to environment
Severe contamination.
（2）The Al thicker with coating surface formation inside Al coating structures2O3Film, due to Al2O3Film conductance is low, electrode
Current potential compared with mother metal just, does not have electro-chemical protection, easily occurs spot corrosion.
（3）Arc spraying zinc aluminum alloy is not strong with steel construction basal body binding force, easily comes off, corrosion resisting property reduction.It is true
Intercrystalline corrosion easily occurs for upper Zn-Al alloy coating, directly contributes metal coating perforation, shortens the anticorrosion time limit.
To sum up, although arc spraying technology is economical and the good advantage of protection effect and be widely used in steel construction
Corrosion protection, but for the requirement of non-maintaining in large-scale important steel construction piece under arms phase or reduced-maintenance, existing metal
Composite coating technology has been difficult to meet, and this is just in the urgent need to researching and developing new corrosion-inhibiting coating structure.
The content of the invention
For above-mentioned existing technical problem, the utility model provides a kind of electric arc spraying composite anti-corrosive coating structure, with
Good weatherability is reached, it is interior non-maintaining during one's term of military service, extend the purpose of steel construction service life.
To achieve the above object, the utility model provides a kind of electric arc spraying composite anti-corrosive coating structure, in steel construction base
Material surface by it is inner and it is outer be sequentially provided with electric arc spraying zinc-copper-titanium alloy coating, arc spraying aluminum coatings close lacquer coat, and face
Lacquer coat.
The silk material that the electric arc spraying zinc-copper-titanium alloy coating is used is zinc-copper-titanium alloy silk, the component of the silk material and its again
Measure percentage as follows： Ti：0.25-0.4%、Cu：0.25-0.35%, surplus are Zn, and Ti purity ＞ 99.2%, Cu purity ＞
99.9%th, Zn purity ＞ 99.9%.Further, the thickness of the arc spraying aluminum coatings is 80-150 μm.
For above-mentioned zinc-copper-titanium alloy silk material, it was found from microcosmic angle：Titanium elements are solid-solubilized in Zinc Matrix so that zinc-copper titanium
The crystal grain of alloy more refined, it is to avoid the too fast roughening of crystal grain is grown up under hot conditions；Copper is in zinc-copper-titanium alloy base simultaneously
Dispersed precipitate in body, plays good invigoration effect, is effectively improved the intensity of alloy.Also, add 0.25-0.4%'s
Titanium, 0.25-0.35% copper can obtain the best kirsite of combination property, and the purity of particularly zinc is higher, and zinc-copper-titanium alloy has
Thing physical property and mechanical performance it is better.In a word, the addition of copper, titanium elements, optimizes kirsite interior metal crystal structure,
Intercrystalline corrosion is avoided, alloy structure decay resistance is improved, while also improving the physical and mechanical properties of alloy, it is ensured that
The processing and fabricating and construction application of silk material.
The silk material that the arc spraying aluminum coatings are used is aluminium wire, and Al purity is 99.99%.Further, zinc-copper-titanium alloy silk
It is equal with aluminium wire diameter, aluminium wire a diameter of 2mm or 3mm.The spraying parameter of the arc spraying aluminum coatings is：Compressed air pressure
0.6-0.7MPa, spray voltage 26-38V, spraying current 120-280A, spray distance 50-300 ㎜, thickness is 50-100 μm.
The thickness of dry film of the closing lacquer coat is 30-90 μm.Further, the layer is one of Epoxy sealer of application.
The thickness of dry film of the topcoat is 50-100 μm.Further, the layer is one of application or two road fluorine carbon finishing paints
Or polyurethane finish.
The operation principle and advantage of each coating of the utility model are as follows：
（A）Electric arc spraying zinc-copper-titanium alloy coating（Anode）With steel construction matrix（Negative electrode）Directly there is provided sacrifice sun for contact
The cathodic protection effect of pole.Secondly, zinc-copper Ti electrode current potential is than existing zinc, aluminium electrode current potential（﹣ 1.67V）It is lower, it is corrosion-resistant
Performance is more preferable.Also, the average adhesion of the coating and base material reaches 15Mpa, more than 20Mpa is can reach, immediately curved
Under bent, impact or collision, the coating also ensure that do not fall off, non-scale, be firmly combined with, anti-corrosion it is effective for a long time.
（B）Arc spraying aluminum coatings are completely covered using aluminium electric arc spraying on zinc-copper titanium coating, and by zinc-copper titanium coating.
Aluminized coating generates the Al of densification in an atmosphere2O3Passivating film, with very high stability.
（C）Closing lacquer coat is penetrated into arc spraying aluminum coatings hole using seal coat, is turned into electric arc spraying aluminium lamination
One, then plays a part of isolation, shielding, protection to steel construction base material.The resistance of electric arc aluminium spraying coating is not only increased,
Greatly reduce its self-corrosion speed and Electrochemical corrosion rate.
After topcoat, closing lacquer coat successive ageing failure, arc spraying aluminum coatings are passivated in an atmosphere, and generation is caused
Close Al2O3Passivating film, buffer action is played to corrosion；After aluminized coating ageing failure, white rust, Jin Er electricity are precipitated on its surface
Arc sprays zinc-copper titanium coating to carry out self-corrosion than relatively low corrosion rate, and corrosion rate is smaller than the corrosion rate of aluminized coating,
When the thickness degree is gradually thinned to local steel construction exposure, start to carry out electrochemical cathodic protection to steel construction.In this way, greatly
Extend the corrosion resistant time limit of steel construction and service life.
In summary, the utility model is applied using electric arc spraying zinc-copper-titanium alloy coating+arc spraying aluminum coatings+seal coat
The composite corrosion proof coating structure of layer+topcoat, aluminized coating and closing lacquer coat, topcoat protect zinc-copper-titanium alloy together
Coating is not corroded by extraneous various corrosive mediums, is played a part of isolating and is shielded.The anticorrosion time limit can reach 80-90,
Corrosion resistance, excellent weather resistance and hard are in existing composite coating structure.Also, steel construction later stage anticorrosion maintenance cost can be substantially reduced, is had
There is important economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1st, steel construction base material, 2, electric arc spraying zinc-copper titanium coating, 3, arc spraying aluminum coatings, 4, closing lacquer coat,
5th, topcoat.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model is included in the surface of steel construction base material 1 by inner and be sequentially provided with electric arc spraying zinc-copper outside
Titanium alloy coating 2, arc spraying aluminum coatings 3 close lacquer coat 4, and topcoat 5.Wherein, electric arc spraying zinc-copper-titanium alloy
The silk material that coating is used is zinc-copper-titanium alloy silk, and the component and its percetage by weight of the B alloy wire are preferred：Ti：0.25-0.4%、
Cu：0.25-0.35%, surplus are Zn, and Ti purity ＞ 99.2%, Cu purity ＞ 99.9%, Zn purity ＞ 99.9%.Arc spraying aluminium
The silk material that coating 3 is used is aluminium wire, and Al purity is 99.99%.
During implementation, the silk material that above-mentioned electric arc spraying zinc-copper-titanium alloy coating 2 is used can directly be purchased from the big positive work of Jiangsu chats
The zinc-copper-titanium alloy silk that journey Technology Co., Ltd. develops.The preparation technology of zinc-copper-titanium alloy silk comprises the following steps：
（1）A certain amount of zinc ingot metal, copper, titanium are added in industrial furnace and carry out vacuum melting；
（2）Zinc ingot metal is progressively added again, until being all fused into zinc-copper-titanium alloy solution, is added refining agent and is sufficiently stirred for, it is quiet
Set to 0 .5-1h；
（3）Alloy solution is subjected to isothermal holding, temperature is 400 DEG C -600 DEG C, is incubated 1-2 hours；
（4）Cold-rolled wire-drawing, silk material specification is 3 ㎜ of ㎜, Φ of Φ 2.
The above-mentioned zinc-copper-titanium alloy silk prepared is divided into 6 groups, continues to implement this composite coating structure of different-thickness, it is real
The step of applying 1-6 is as follows：
（a）Derusting by sandblasting：The corrosion product on the surface of steel construction base material 1, base after processing are removed using the method for derusting by sandblasting
The surface cleanness of material 1 should reach that Sa3 grades of above, surface roughnesses should reach Rz60-100 μm.
（b）Electric arc spraying：Zinc-copper-titanium alloy silk is placed on into Jiangsu Zhongkuangdazheng Surface Engineering Techn Co., Ltd. to develop
Secondary atomized with high power electric arc spraying complete set of equipments（DGL-600）On, the surface of steel construction base material 1 is sprayed, sun is formed
Polar form zinc-copper-titanium alloy coating 2, the coating layer thickness is 50-100 μm；Interval 20-50 minutes, electric arc is used as with the aluminium wire of same diameter
Two electrodes in spray gun, then layer of metal aluminized coating 3 is sprayed, thickness is 80-150 μm.For easy construction, aluminium wire used and
The diameter of zinc-copper titanium silk is equal, a diameter of 2mm or 3mm typically used
Wherein, spraying parameter is：Compressed air presses 0.6-0.7MPa, spray voltage 26-38V, spraying current 120-
280A, spray distance 50-300 ㎜.
（c）Seal coat application：The dust and bulky grain on the surface of zinc-copper-titanium alloy coating 2 are removed, in aluminium in 3h after removing
The outer surface application of coating 3 is together or twice epoxy primer carries out Seal treatment, and to form closing lacquer coat 4, thickness is 30-50 μ
m。
（d）Finish paint application：After closing lacquer coat 4 is dried at room temperature at least 24h and paint film does solid work, to closing lacquer coat 4
Surface is cleared up, and removes surface contaminants and dust；One of application or twice fluorine carbon finishing paint or polyurethane finish, to form finish paint
Coating 5, the coating layer thickness is 50-80 μm.
From upper table 1, performance is carried out to the composite coating structure formed in embodiment 1-6 on the surface of steel construction base material 1
Detection, as a result shows：The resistance to neutral salt spray test of bond strength ＞ 15MPa, 7200h of composite coating structure and steel construction base material 1,
Composite coating structure surface redfree corrosion product, surface occur without foaming phenomena.
Understood by the practical application at scene, this composite anti-corrosive coating system combines the painting of electric arc spraying positive polarity metal
Layer with paint close barrier coat advantage, with excellent anticorrosion, weatherability, dicoration the features such as, effectively prolong
The service life of long steel construction, the anti-corrosion time limit is up to 80-90.
Claims (10)
1. a kind of electric arc spraying composite anti-corrosive coating structure, it is characterised in that in steel construction base material（1）Surface by it is inner and it is outer successively
Provided with electric arc spraying zinc-copper-titanium alloy coating（2）, arc spraying aluminum coatings（3）, close lacquer coat（4）, and topcoat
（5）；
The electric arc spraying zinc-copper-titanium alloy coating（2）The silk material used is zinc-copper-titanium alloy silk；
The arc spraying aluminum coatings（3）The silk material used is aluminium wire.
2. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1, it is characterised in that the zinc-copper titanium is closed
Spun gold and aluminium wire diameter are equal.
3. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 2, it is characterised in that the aluminium wire diameter
For 2mm or 3mm.
4. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1, it is characterised in that the electric arc spraying
Aluminized coating（3）Spraying parameter be：Compressed air presses 0.6-0.7MPa, spray voltage 26-38V, spraying current 120-
280A, spray distance 50-300 ㎜.
5. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1 or 2 or 4, it is characterised in that the electricity
Arc sprays aluminized coating（3）Thickness be 80-150 μm.
6. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1 or 2 or 4, it is characterised in that the electricity
Arc sprays zinc-copper-titanium alloy coating（2）Thickness be 50-100 μm.
7. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1 or 2 or 4, it is characterised in that the envelope
Close lacquer coat（4）Thickness of dry film be 30-90 μm.
8. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 7, it is characterised in that the seal coat is applied
Layer（4）For one of Epoxy sealer of application.
9. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 1 or 2 or 4, it is characterised in that the face
Lacquer coat（5）Thickness of dry film be 50-100 μm.
10. a kind of electric arc spraying composite anti-corrosive coating structure according to claim 9, it is characterised in that the finish paint is applied
Layer（5）For one of application or two road fluorine carbon finishing paints or polyurethane finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478926.2U CN206553617U (en) | 2016-12-30 | 2016-12-30 | Electric arc spraying composite anti-corrosive coating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478926.2U CN206553617U (en) | 2016-12-30 | 2016-12-30 | Electric arc spraying composite anti-corrosive coating structure |
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| Publication Number | Publication Date |
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| CN206553617U true CN206553617U (en) | 2017-10-13 |
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| CN201621478926.2U Active CN206553617U (en) | 2016-12-30 | 2016-12-30 | Electric arc spraying composite anti-corrosive coating structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825789A (en) * | 2019-01-01 | 2019-05-31 | 中国人民解放军63653部队 | The surface antiseptisis technology of radioactive waste packing container |
| CN110670011A (en) * | 2019-11-14 | 2020-01-10 | 西安石油大学 | Self-polishing anti-corrosion and anti-scale coating and preparation method thereof |
| CN114262820A (en) * | 2021-12-22 | 2022-04-01 | 江苏中矿大正表面工程技术有限公司 | Novel zinc alloy wire for electric arc spraying and preparation method of coating |
-
2016
- 2016-12-30 CN CN201621478926.2U patent/CN206553617U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825789A (en) * | 2019-01-01 | 2019-05-31 | 中国人民解放军63653部队 | The surface antiseptisis technology of radioactive waste packing container |
| CN110670011A (en) * | 2019-11-14 | 2020-01-10 | 西安石油大学 | Self-polishing anti-corrosion and anti-scale coating and preparation method thereof |
| CN114262820A (en) * | 2021-12-22 | 2022-04-01 | 江苏中矿大正表面工程技术有限公司 | Novel zinc alloy wire for electric arc spraying and preparation method of coating |
| CN114262820B (en) * | 2021-12-22 | 2022-07-22 | 江苏中矿大正表面工程技术有限公司 | Novel zinc alloy wire for electric arc spraying and preparation method of coating |
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