CN103132405B - Anti-corrosion treatment method for exotic metal structures of maglev steel rails - Google Patents
Anti-corrosion treatment method for exotic metal structures of maglev steel rails Download PDFInfo
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- CN103132405B CN103132405B CN201310060780.4A CN201310060780A CN103132405B CN 103132405 B CN103132405 B CN 103132405B CN 201310060780 A CN201310060780 A CN 201310060780A CN 103132405 B CN103132405 B CN 103132405B
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Abstract
The invention relates to an anti-corrosion treatment method for exotic metal structures of maglev steel rails. The anti-corrosion treatment method includes steps of cleaning attachments, rust and oxide layers on the surfaces of aluminum alloy profiles and F-shaped steel guide rails; coating aluminum-rich coatings on the surfaces, contacting with the F-shaped steel guide rails, of the aluminum alloy profiles, and coating zinc-based plated coatings on the surfaces, contacting with the aluminum alloy profiles, of the F-shaped steel guide rails; and fitting the aluminum alloy profiles and the F-shaped steel guide rails with H-shaped steel rail sleepers according to the prior art after coatings are coated. Two protective layers of the aluminum-rich coating layer/zinc-based plated coating layer are formed between the aluminum alloy profile and the F-shaped steel guide rails, so that galvanic corrosion between the aluminum alloy profiles and the F-shaped steel guide rails are prevented, corrosion resistance of the maglev steel rails is improved, and the service life is prolonged.
Description
Technical field
The present invention relates to the method for anticorrosion treatment between a kind of different metal, particularly relate to one and be applicable to the different metal construction method for anticorrosion treatment of middle low speed magnetic suspension rail, belong to the technical field of anti-corrosion of metal process.
Background technology
Track and the common rail of middle low speed magnetic suspension train are different, and it adopts F shaped steel guide rail, and the processing of its section of track, installation accuracy and track line style directly affect train operation stationarity.Middle low speed magnetic suspension rail is by steel mill's direct rolling and forming, and supporting rail assembly, for China's low speed magnetic suspension railway traffic engineering solves great difficult problem.Middle low speed magnetic suspension rail is generally made up of F shaped steel guide rail, H profile steel sleeper and aluminium alloy extrusions; Connection is completed by the securing member of carbon steel, sunk screw and pin.F shaped steel guide rail, H profile steel sleeper are Mn-Cu type economical and weather resistant steel, and aluminium alloy section surface carries out anodization.Traditional track traffic rail is generally do not carry out anticorrosive coating process, but for middle low speed magnetic suspension rail, because design service life is long, work condition environment is complicated, engineering design requirements carries out anticorrosive coating, to adapt to the condition of work of middle low speed magnetic suspension rail.What abroad (as Japan) adopted for the preservative treatment of magnetic suspension rail different metal construction is electric conductivity during application sealing compound blocks between the different metal construction of low speed magnetic suspension rail, thus plays the electrochemical corrosion hindered between different metal.But due to sealing compound have that cost is high, complicated construction technique and the problem such as colloid is aging, be not the ideal scheme of middle low speed magnetic suspension rail corrosion protection design.
Summary of the invention
For the deficiencies in the prior art, the invention provides the different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, be suitable for the preservative treatment of the different metal construction of middle low speed magnetic suspension rail.
Term explanation
Aluminium alloy extrusions: aluminium alloy extrusions of the present invention refers to the track segment of the aluminum alloy material covering F shaped steel guide rail upper surface is the section component that magnetic suspended railway railway technology field is commonly used.
F shaped steel guide rail: F shaped steel guide rail of the present invention refers to the guide rail of magnetic suspended railway track, is made up of F structural section is the section component that magnetic suspended railway railway technology field is commonly used.
Aluminum-rich coatings: aluminum-rich coatings of the present invention refers to use the Metal surface anti-corrosion coating material that anticorrosive paint technical field is conventional according to the using method of existing routine.
Zinc-base plating dope: Zinc-base plating dope of the present invention refers to use the Metal surface anti-corrosion coating material that anticorrosive paint technical field is conventional according to the using method of existing routine.
Coating dry film thickness: refer to the thickness after coating normal temperature cure.
Magnetic suspension rail different metal construction preservative treatment: refer to and preservative treatment is carried out to the different metal construction between the different F shaped steel guide rail of low speed magnetic suspension rail in composition and the aluminium alloy extrusions covering F shaped steel guide rail upper surface.
Technical scheme of the present invention is as follows:
The different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, comprises the different F shaped steel guide rail of composition magnetic suspension rail and the preservative treatment of the different metal construction of aluminium alloy extrusions covering F shaped steel guide rail upper surface, comprises step as follows:
(1) aluminium alloy section surface and F shaped steel guide rail surface are cleared up, remove the attachment on its surface and corrosion and oxide layer;
(2) after having cleared up, to the external coating aluminum-rich coatings of the aluminium alloy extrusions contacted with F shaped steel guide rail, to the F shaped steel guide rail surface application Zinc-base plating dope contacted with aluminium alloy extrusions.
Preferred according to the present invention, in described step (2), aluminum-rich coatings is HD4001 aluminum-rich coatings, and Zinc-base plating dope is HDX6000 Zinc-base plating dope, dry film Zn content 96% ~ 96.5% mass ratio.
Preferred according to the present invention, adopt the dried compressed air being less than 20% relative humidity to carry out spary cleaning to the cleaning of aluminium alloy section surface in described step (1), make the aluminium alloy section surface drying after clearing up, free from dust, without grease, without dirt, without attachment; Sandblasting or ball blast are adopted to the cleaning of F shaped steel guide rail surface, make the F shaped steel guide rail surface drying after clearing up, free from dust, without grease, without dirt, without rust staining attachment, standard that surface treatment quality reaches " before application steel surface rusting grade and derusting grade " (GB8923-88) specifies.
Preferred according to the present invention, in described step (2) to the application aluminum-rich coatings of aluminium alloy section surface, are all the methods adopting airless spraying or roller coat to the application Zinc-base plating dope of F shaped steel guide rail surface;
Further preferred, in step (2), to the application aluminum-rich coatings of aluminium alloy section surface be 5 ~ 25 DEG C, carry out under the painting environment of 45 ~ 85% relative humidity.
Preferred further, in step (2), be at-15 DEG C ~ 50 DEG C to the application Zinc-base plating dope of F shaped steel guide rail surface, carry out under the painting environment of 45 ~ 95% relative humidity.
Preferred according to the present invention, be 20 ~ 100 μm to the aluminum-rich coatings coating dry film thickness of aluminium alloy section surface application in described step (2); It is 80 ~ 160 μm to the Zinc-base plating dope coating dry film thickness of F shaped steel guide rail surface application.
Further preferably, being 20 ~ 30 μm to the aluminum-rich coatings coating dry film thickness of aluminium alloy section surface application in described step (2), is 80 ~ 100 μm to the Zinc-base plating dope coating dry film thickness of F shaped steel guide rail surface application.
Preferred further, to F shaped steel guide rail surface application twice Zinc-base plating dope in described step (2), the interval time of twice application is 2 ~ 5h, and first time is coated with to be contained within 8h and completes.
Preferred further, be: adopt airless spraying keep spray apart from 300 ~ 380mm to the application mode of F shaped steel guide rail in described step (2); Spraying swath 150 ~ 400mm, lance ejection angle is 30 ~ 80 °, and spraying swath lap width is 1/6 ~ 1/4 of fabric width, and the spray gun speed of service is 70cm/s.
After paint spraying process described in completing steps (2), aluminium alloy extrusions and F shaped steel guide rail are conventionally assembled with H profile steel sleeper, to complete with pin with fastening bolt, sunk screw and be connected.Preferably, link (pin and screw) used is assembled also through anticorrosive coating process, by prior art.
HD4001 aluminum-rich coatings, HDX6000 Zinc-base plating dope are commercially available, and application process is see product description.
The present invention applies domestic metal anti-corrosive paint, and coating process standardization, so that factory's anticorrosive coating and standard assemblied, changes and constructed by on-the-spot gluing in the past, and the process route of site assembly operation, improves the construction environment of application.HD4001 aluminum-rich coatings is main constituent with aluminum paste and acrylic resin; coating is made also to have insulating properties; the infiltration path of gas, liquid can also be hindered simultaneously; for protected metal carrying is for good shielding protection; even if after coating structure is damaged; aluminium powder in coating can also in the mode of sacrificed anticathode, and protection is containing HDX6000 Zinc-base plating coating.
The present invention has following beneficial effect:
1, the present invention adopts to aluminium alloy extrusions application HD4001 aluminum-rich coatings, to the HDX6000 Zinc-base plating dope of F shaped steel guide rail application containing the active pure zinc of 96wt%; The composite construction of Lv He Jin ∕ rich aluminium Tu Ceng ∕ Zinc-base plating Tu Ceng ∕ F shaped steel guide rail is formed between aluminium alloy extrusions and F shaped steel guide rail; namely between aluminium alloy extrusions and F shaped steel rail, be provided with the two-layer topping of rich aluminium Tu Ceng ∕ Zinc-base plating coating; blocking effect is played to the galvanic corrosion between aluminium alloy extrusions and F shaped steel guide rail; add the resistance to corrosion of magnetic suspension rail, extend application life.
2, the coating that the present invention adopts is domestic specialty metal anticorrosive paint, and coating process standardization, so that factory's anticorrosive coating and standard assemblied, changes and constructed by on-the-spot gluing in the past, and the process route of site assembly operation, makes technique easier.
3, present invention improves the construction environment of application, shorten construction period, reduce engineering cost, hinder different Galvanic Corrosion of Dissimilar Metals in conductor insulation, shielding protection and sacrificed anticathode three kinds of modes, extend the anti-corrosion life of middle low speed magnetic suspension rail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the middle low speed magnetic suspension train track in the embodiment of the present invention 1 after assembling; Wherein, 1:F shaped steel guide rail, 2:H shaped steel sleeper, 3: fastening bolt, 4: pin, 5: sunk screw, 6: aluminium alloy extrusions.
Fig. 2 is the anticorrosion structure schematic diagram of the embodiment of the present invention 1 middle orbit; Wherein, 1:F shaped steel guide rail, 6: aluminium alloy extrusions, 7: rich aluminized coating, 8: Zinc-base plating coating.
Detailed description of the invention
Below by specific embodiment, also the present invention will be further described by reference to the accompanying drawings, but be not limited thereto.
Material and facility used in embodiment is existing conventional equipment, commercial products.
Embodiment 1, the different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, the method comprises the steps:
(1) aluminium alloy extrusions 6 surface and F shaped steel guide rail 1 surface are cleared up, remove the attachment on its surface and corrosion and oxide layer;
Adopt gases at high pressure spray gun to carry out spary cleaning to aluminium alloy extrusions 6 surface, remove the attachment on aluminium alloy extrusions 6 surface, spray gun pressure controls at 0.6 ~ 0.9MPa; Aluminium alloy extrusions 6 surface treatment quality reach drying, free from dust, without grease, without dirt, without attachment; The compressed air drying of gases at high pressure spray gun ejection, clean, relative humidity is less than 20%;
Blasting treatment is carried out to F shaped steel guide rail 1, removes the corrosion on F shaped steel guide rail 1 surface, oxide skin and other attachment; F shaped steel guide rail 1 surface treatment quality reaches drying, free from dust, without grease, without dirt, without rust staining attachment, meets the cleannes Sa2.5 level roughness 35 ~ 50 μm that " before application steel surface rusting grade and derusting grade " (GB8923-88) standard specifies; Sand grains cleannes selected by sandblasting meet national standard requirement, and granularity is between 0.5 ~ 1.5mm, compressed air drying used, clean, and relative humidity is less than 20%;
(2) after having cleared up, to the external coating aluminum-rich coatings of aluminium alloy extrusions 6, to F shaped steel guide rail 1 external coating Zinc-base plating dope.
Adopt the HD4001 aluminum-rich coatings of Shenyang Hangda Technology Co., Ltd, it is made up of Hydroxylated acrylic resin, aluminum paste, solvent and auxiliary agent; HD4001 aluminum-rich coatings is divided into two components: component A is paint slurry, and B component is curing compound.By the component A paint slurry of HD4001 coating, with B component curing compound, by weight be the ratio mixing and stirring of 6:1, then add component A and B component mixes the toluene of 30 ~ 35% of gross weight as thinner, stir after 20 minutes, application is carried out to the surface of aluminium alloy extrusions 6.Adopt airless spraying method, at 20 ~ 25 DEG C, under the painting environment of 45 ~ 85% relative humidity, carry out application; And measure wet-film thickness with wet film thickness gauge at any time, make coating dry film thickness at 20 ~ 30 μm.
Adopt the HDX6000 Zinc-base plating dope of Shenyang Hangda Technology Co., Ltd to F shaped steel guide rail 1 external coating, HDX6000 Zinc-base plating dope is made up of super-fine zinc dust, resinene, thinner, antisettling agent and dispersing agent, and its dry film Zn content is 96wt%.Adopt airless spraying method, at 20 ~ 25 DEG C, under the painting environment of 75 ~ 95% relative humidity, carry out application; During application, keep spray apart from 300 ~ 380mm; Spraying swath 150 ~ 400mm, is advisable with 300mm, and lance ejection angle is 30 ~ 80 °; Spraying swath lap width is 1/6 ~ 1/4 of fabric width; The spray gun speed of service is about 70cm/s; F shaped steel guide rail 1 surface is carried out cleaning and is completed first time application within latter 8 hours, carries out second time application and at any time with wet film thickness gauge mensuration wet-film thickness, make the coating dry film thickness after twice application at 80 ~ 100 μm after 2h.
Aluminium alloy extrusions 6 after application process and F shaped steel guide rail 1 are assembled, by pin 4, sunk screw 5, aluminium alloy extrusions 6 and F shaped steel guide rail 1 are fixedly assembled, and by fastening bolt 3, F shaped steel guide rail 1 and H profile steel pillow 2 are fixed connection, low speed magnetic suspension rail finished product in formation, described pin 4, sunk screw 5 and fastening bolt 3 surface all application HDX6000 Zinc-base plating dopes; Fig. 1 is the structural representation of the middle low speed magnetic suspension train track after assembling.
The composite construction of aluminium alloy extrusions 6 ∕ rich aluminized coating 7 ∕ Zinc-base plating coating 8 ∕ F shaped steel guide rail 1 is defined after aluminium alloy extrusions 6 and F shaped steel guide rail 1 are fixedly assembled, namely between aluminium alloy extrusions 6 and F shaped steel guide rail 1, be provided with the two-layer topping of rich aluminized coating 7 ∕ Zinc-base plating coating 8, blocking effect is played to the galvanic corrosion between aluminium alloy extrusions 6 and F shaped steel guide rail 1; Fig. 2 is the anticorrosion structure schematic diagram of middle low speed magnetic suspension train track.
Embodiment 2
The different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, as embodiment 1, unlike the coating process application on aluminium alloy extrusions 6 surface and F shaped steel guide rail 1 surface being adopted to roller coat, be at 5 ~ 10 DEG C, under the painting environment of 45 ~ 60% relative humidity, application carried out to aluminium alloy extrusions 6 surface and F shaped steel guide rail 1 surface.
Embodiment 3
The different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, as embodiment 1, unlike the HD4001 aluminum-rich coatings coating dry film THICKNESS CONTROL on aluminium alloy extrusions 6 surface at 90 ~ 100 μm.After twice application, the HDX6000 Zinc-base plating dope coating dry film THICKNESS CONTROL on F shaped steel guide rail 1 surface is at 140 ~ 160 μm.
Embodiment 4
The different metal construction method for anticorrosion treatment of a kind of magnetic suspension rail, as embodiment 1, carries out Shot Blasting unlike before application to F shaped steel guide rail 1.
Claims (1)
1. the different metal construction method for anticorrosion treatment of magnetic suspension rail, comprises the different F shaped steel guide rail of composition magnetic suspension rail and the preservative treatment of the different metal construction of aluminium alloy extrusions covering F shaped steel guide rail upper surface, comprises step as follows:
(1) aluminium alloy section surface and F shaped steel guide rail surface are cleared up, remove the attachment on its surface and corrosion and oxide layer;
(2) after having cleared up, to the external coating aluminum-rich coatings of the aluminium alloy extrusions contacted with F shaped steel guide rail, to the F shaped steel guide rail surface application Zinc-base plating dope contacted with aluminium alloy extrusions;
It is 20 ~ 100 μm to the aluminum-rich coatings coating dry film thickness of aluminium alloy section surface application; It is 80 ~ 160 μm to the Zinc-base plating dope coating dry film thickness of F shaped steel guide rail surface application.
2. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, is characterized in that in step (2), aluminum-rich coatings is HD4001 aluminum-rich coatings; Described Zinc-base plating dope is HDX6000 Zinc-base plating dope, dry film Zn content 96% ~ 96.5% mass ratio.
3. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, it is characterized in that adopting the dried compressed air being less than 20% relative humidity to carry out spary cleaning to the cleaning of aluminium alloy section surface in step (1), make the aluminium alloy section surface drying after clearing up, free from dust, without grease, without dirt, without attachment; Sandblasting or ball blast are adopted to the cleaning of F shaped steel guide rail surface, make the F shaped steel guide rail surface drying after clearing up, free from dust, without grease, without dirt, without rust staining attachment, GB8923-88 standard that surface treatment quality reaches " before application steel surface rusting grade and derusting grade " specifies.
4. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, to is characterized in that in step (2) the application aluminum-rich coatings of aluminium alloy section surface, is all the methods adopting airless spraying or roller coat to the application Zinc-base plating dope of F shaped steel guide rail surface.
5. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, is characterized in that in step (2), to the application aluminum-rich coatings of aluminium alloy section surface be 5 ~ 25 DEG C, carry out under the painting environment of 45 ~ 85% relative humidity.
6. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, is characterized in that in step (2), is at-15 DEG C ~ 50 DEG C, carries out under the painting environment of 45 ~ 95% relative humidity the application Zinc-base plating dope of F shaped steel guide rail surface.
7. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, it is characterized in that in step (2) F shaped steel guide rail surface application twice Zinc-base plating dope, the interval time of twice application is 2 ~ 5 h, and first time is coated with to be contained within 8h and completes.
8. the different metal construction method for anticorrosion treatment of magnetic suspension rail according to claim 1, it is characterized in that in step (2) to the application mode of F shaped steel guide rail be: adopt airless spraying, keep spray apart from 300 ~ 380mm; Spraying swath 150 ~ 400 mm, lance ejection angle is 30 ~ 80 °, and spraying swath lap width is 1/6 ~ 1/4 of fabric width, and the spray gun speed of service is 70 cm/s.
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| CN201310060780.4A CN103132405B (en) | 2013-02-26 | 2013-02-26 | Anti-corrosion treatment method for exotic metal structures of maglev steel rails |
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| CN103132405B true CN103132405B (en) | 2015-04-08 |
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| CN106436500B (en) * | 2016-11-15 | 2018-08-31 | 湖南省冶金材料研究院 | A kind of magnetic suspension guide rail and preparation method thereof |
| US9994262B1 (en) * | 2017-01-19 | 2018-06-12 | Ford Global Technologies, Llc | Vehicle cargo bed system |
| CN108102534A (en) * | 2017-12-28 | 2018-06-01 | 安徽鑫铂铝业股份有限公司 | A kind of automobile using antifungi aluminium alloy extrusions preparation method |
Citations (3)
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| JP3797569B2 (en) * | 1996-03-28 | 2006-07-19 | エイチ・エス・エス・ティ開発株式会社 | Mounting the reaction plate on the rail for the linear motor car |
| CN1884616A (en) * | 2006-06-23 | 2006-12-27 | 攀枝花钢铁(集团)公司 | Corrosion-resisting steel rail and process for producing the same |
| CN102154610A (en) * | 2010-02-11 | 2011-08-17 | 上海建冶科技工程股份有限公司 | Construction technology for anticorrosive composite coating of steel structure |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3797569B2 (en) * | 1996-03-28 | 2006-07-19 | エイチ・エス・エス・ティ開発株式会社 | Mounting the reaction plate on the rail for the linear motor car |
| CN1884616A (en) * | 2006-06-23 | 2006-12-27 | 攀枝花钢铁(集团)公司 | Corrosion-resisting steel rail and process for producing the same |
| CN102154610A (en) * | 2010-02-11 | 2011-08-17 | 上海建冶科技工程股份有限公司 | Construction technology for anticorrosive composite coating of steel structure |
Non-Patent Citations (1)
| Title |
|---|
| 钢铝复合接触轨的典型结构及其制造工艺;邢甲第等;《城市轨道交通研究》;20040830(第04期);第71-74页 * |
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