CN108326511A - A kind of aluminum alloy railway vehicle manufacturing method - Google Patents
A kind of aluminum alloy railway vehicle manufacturing method Download PDFInfo
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- CN108326511A CN108326511A CN201711451200.9A CN201711451200A CN108326511A CN 108326511 A CN108326511 A CN 108326511A CN 201711451200 A CN201711451200 A CN 201711451200A CN 108326511 A CN108326511 A CN 108326511A
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- aluminum alloy
- railway vehicle
- vehicle manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention provides a kind of aluminum alloy railway vehicle manufacturing method.The method of the present invention includes following steps：1) aluminum alloy bodywork is welded by agitating friction welding group；2) mechanical surface treatment is carried out to the aluminum alloy bodywork；3) in the aluminum alloy bodywork surface spraying nanometered disposal liquid through the mechanical surface treatment, nano protecting layer is formed on aluminum alloy bodywork surface；4) Spanish furnish is carried out to the aluminum alloy bodywork for being formed with the nano protecting layer.The method construction technology of the present invention is simple, and good anti-corrosion protection and beautiful decorative appearance can be provided for aluminum alloy bodywork.
Description
Technical field
The present invention relates to a kind of rail vehicles, and in particular to a kind of aluminum alloy railway vehicle manufacturing method.
Background technology
Aluminium alloy with its low-density, high intensity, high rigidity, it is easy to process the advantages that and be widely used in the system of rail vehicle
In making；However, the corrosion resistance and decorative appearance performance of aluminium alloy be not high, it usually needs by tables such as oxidation, chromaking, oil paint coatings
Surface treatment method improves anticorrosion and the decorative appearance of alloy product.Application is protected in metal or nonmetallic surface covering
The process of the coatings such as sheath, decorative layer, coating process are to give full play to coating material performance, obtain high-quality coating, reduce application
Production cost and the necessary condition increased economic efficiency.
Currently, the coating structure of rail vehicle generally includes anti-corrosive primer, putty, floating coating, finishing coat etc., coating process master
Include the following steps：1) coat anti-corrosive primer in car body surface, using wet on wet spraying process, i.e., wet on wet empty spray one time,
Dry real spray one time after a certain period of time is dodged, 60 μm~100 μm of thickness of dry film is reached；2) after anti-corrosive primer drying, P80 sand paper pair is used
Thick putty is looked in dent polishing, brush, and after the drying of thick putty, interlayer is polished with P80 sand paper, and it is greasy to scratch multipass according to surface
Son；3) after putty parches, with P80 sand paper polishing putty, a floating coating is sprayed, thickness of dry film is controlled at 40 μm~100 μm；4)
After floating coating drying, repairing putty defect, car body of being polished with P240 sand paper on floating coating；5) finishing coat sprays, and is wanted according to technology
Ask the plain color paint for spraying different colours or base coat and varnish.
However, above-mentioned coating process has the following defects：
1) organic solvent volatilization is will produce during blade coating putty, while will produce a large amount of powder in putty bruting process
Dirt not only influences working environment, can also seriously threaten the safety and health and safety of human body；In addition, the dust meeting of a large amount of disperses
Surface paint quality is influenced, so that follow-up polishing amount is increased, the increase for doing over again to cause painting cost is resulted even in when serious.
2) in floating coating coating process, using one time 40 μm~100 μm floating coating thickness of dry film it is recessed to putty surface
Hole, knife rib, numb eye are filled, make up a deficiency, and are unable to reach perfect condition, to which the ground processing before causing finishing coat to spray is poor,
After spray paint, pit, knife rib, the numb eye of putty layer do not completely remove, to influence appearance；In addition, in middle painting
Repairing putty defect is painted, the bad phenomenons such as loss of gloss, aberration can occur after finishing coat spraying, to influence appearance, cause
Finishing coat is done over again.
3) water paint is used, using water as diluent, since the surface tension of water is that coating often uses the 2.5 of organic solvent
Times, and the evaporation latent heat of water is 5~7 times of common solvent, water is slow compared with organic solvent evaporation, slow so as to cause film forming；In addition, by
Low in solid content, the existing wet on wet empty construction technology sprayed 1 time, spray 1 time in fact cannot meet coating thickness requirement, easily lead to finishing coat
Spraying unevenness, sunburner or excessively thin, to the problems such as prickly heat, sagging, pin hole, orange peel, shrinkage cavity occur.
Although environment protecting water-based paint solves pollutions of the VOCs to environment to a certain extent, to the place of ground
The requirements such as reason, construction environment, spraying technology are harsher, and often finishing coat final caused by various problems is done over again；Meanwhile water
Property coating material price is high, coating hardness is big, substantially increase material cost and cost of labor；In addition, above-mentioned application work
The flow of skill is complicated, and larger expense and longer time are especially needed when vehicle is reprocessed, is taken time and effort.
Although aluminium alloy has the anti-corrosive properties of autoxidation film forming, the uniformity of self film is uncontrollable, for aluminium alloy
Material manufacture car body, when have water droplet drop be attached on the aluminum alloy bodywork of no preservative treatment after (such as tunnel top condensed water, clearly
Wash the splashing cleaning solution etc. of journey), chemical reaction, which can occur, for attachment area leads to discoloration or heavy corrosion, to influence outside car body
It sees.Although the 6005A aluminium section bars for being usually used in aluminum alloy railway vehicle car body at present have certain corrosion stability, in view of railcar
The uncertainty of running environment acid-base value, if not carrying out whole preservative treatment to car body, aluminium caused by shape extrusion
The discontinuity of alloy surface damaged part autoxidation film forming, which will result in the generation etch chemistries reaction when medium adheres to, to be caused
Discoloration, and then influence car body appearance.Therefore, especially expect the aluminum alloy rail vehicle that a kind of construction technology is simple and antiseptic property is good
Manufacturing method.
Invention content
The present invention provides a kind of aluminum alloy railway vehicle manufacturing method, and construction technology is simple, and can be aluminium alloy
Car body provides good anti-corrosion protection and beautiful decorative appearance.
The present invention provides a kind of aluminum alloy railway vehicle manufacturing method, includes the following steps：
1) aluminum alloy bodywork is welded by agitating friction welding group；
2) mechanical surface treatment is carried out to the aluminum alloy bodywork；
3) in the aluminum alloy bodywork surface spraying nanometered disposal liquid through the mechanical surface treatment, on aluminum alloy bodywork surface
Form nano protecting layer；
4) Spanish furnish is carried out to the aluminum alloy bodywork for being formed with the nano protecting layer.
In the present invention, aluminum alloy bodywork is welded by conventional structure part agitating friction welding group；Specifically, aluminium closes
Golden car body is by the way that car body roof, framed side wallboard, end wall panel, body frame are stirred friction welding group and are welded.
In particular, according to human eye for the visual response of planar imaging, the flatness of the aluminum alloy bodywork is≤
2mm/m；It is more than such as above-mentioned flatness, can causes side wall surface that " hypo trace " is presented, it is anti-to be especially painted with transparent nanometer on surface
It is become apparent after sheath.
Agitating friction welding be mutually moved using workpiece end face, heat makes end reach thermoplasticity caused by phase mutual friction
State, then rapid upset is to complete a kind of method of welding.In the present invention, the process conditions of the agitating friction welding
It may be controlled to：Intrusion is 0.3~0.5mm, and soldering tip rotating speed is 1500~1700r/min, and speed of welding is 500~700mm/
min。
Specifically, after fixing device assembly in place is respectively adopted in car body roof, framed side wallboard, end wall panel, body frame, upper
It states and is stirred the weldering of friction welding group under constant intrusion, soldering tip rotating speed and speed of welding；Wherein, framed side wallboard is as decoration
Face, welding quality will influence follow-up exterior decorative effect, in order to eliminate the influence that effective bearing area is stitched in the Reducing thickness butt welding, side
Wallboard selection it is conventional increase a convex configuration in welded seam area, the height of the convex configuration can be 0.5mm, and width can be with
For 6mm；In addition, control intrusion be 0.3~0.5mm, soldering tip rotating speed be 1500~1700r/min, speed of welding be 500~
700mm/min.Above-mentioned process conditions are conducive to make the flatness for welding the aluminum alloy bodywork to be formed by agitating friction welding group to reach
To≤2mm/m.
Mechanical surface treatment is that one layer and the machinery of car body, physics, chemically are artificially formed on aluminum alloy bodywork surface
The process on the different surface layer of energy, the purpose of mechanical surface treatment are to meet corrosion resistance, wearability, decoration or other extraordinary work(
It can require.In the present invention, mechanical surface treatment is used in a kind of decoration line appearance of aluminum alloy bodywork surface creation and aluminium is made to close
Golden car body has certain roughness.
Decoration line appearance of the present invention to mechanical surface treatment in aluminum alloy bodywork surface creation does not limit strictly, can root
It is rationally designed according to actual needs, such as can be flakes decorative appearance etc.；In particular, the aluminium through the mechanical surface treatment closes
The roughness of golden car body is 0.5~1.2 μm, is further 0.8~1.2 μm.
The present inventor, which studies, to be found：Table is being carried out to aluminum alloy bodywork using conventional soldering techniques and commercial blast mode
When surface treatment, the roughness of aluminum alloy bodywork is 6 μm or so；At this point, due to nano protecting layer water white transparency, sandblasting cannot be covered
The convex-concave appearance on surface, the thin rough surface that cannot fill of local protective layer cause the performance of nano protecting layer and pad pasting bad, use
Treatment fluid dosage increases by 4 times.The mechanical surface treatment of the present invention controls the roughness of aluminum alloy bodywork at 0.8~1.2 μm
In range, drawbacks described above can be overcome.
In the present invention, the mechanical surface treatment may include corase grinding and fine grinding, wherein：In corase grinding, rotating speed is controlled
For 1800~2200r/min, feed speed is 8~9m/min, and volume under pressure is 5~6mm；In fine grinding, control rotating speed is 1500
~1700r/min, feed speed are 5~6m/min, volume under pressure 5mm.The present invention to the process conditions of mechanical surface treatment not
Make stringent limitation, as long as above-mentioned decoration line appearance and roughness can be formed.
Specifically, the mechanical surface treatment includes the following steps：
It is polished weld seam using 60-80# emery cloths or other milling tools, polishing is avoided to injure base material and convenient for follow-up
Mechanical smooth polishing, weldering meat height are higher by base material, and it is 0.05~0.5mm to control this highly；
Whole corase grinding (roughly grinding) is carried out using 60~120# emery cloths or other milling tools, control rotating speed is 1800~
2200r/min, feed speed are 8~9m/min, and volume under pressure is 5~6mm, and head track route is snakelike route and straight trip road
Two kinds of line；
Surface exquisiteness uniform state is carried out using 240-400# emery cloths or thousand wheels to polish (i.e. fine grinding), control rotating speed is
1500~1700r/min, feed speed are 5~6m/min, and volume under pressure 5mm, head track route is for snakelike route and directly
Two kinds of walking along the street line；
Decoration wire drawing is carried out using thousand wheels of 80-120#, amplitude, wavelength, motor speed, indentation are adjusted according to decorative appearance
The parameters such as amount, straight-line feed amount；For example, the wire drawing appearance adjustment amplitude of snowflake silk is 5mm, wavelength 5mm, motor speed is
2000 turns, intrusion 2mm, straight-line feed amount is 5m/min etc..
Due to the raising of brightness after being ground with metal surface, the alternating action between bright line and concealed wire produces on sense organ
A kind of raw variation of light and shade, and this variation makes one to think the feeling that metal surface has " silk ", this is that metal surface grinding is drawn
The forming process of silk effect, however since the angle of the sharp corner angle of each abrasive material is different, the shapes and sizes of each abrasive material
Difference, each abrasive material are under pressure of different sizes in wire drawing, cause practical situation complex, when thousands of mills
Expect that the groove generated in metal surface is ground there are when different angle and shape, visually makes it is considered that " silk " is uneven
Or " silk " aesthetic feeling is inadequate.
In particular, the inventors discovered that, when polishing weld seam, if polishing injures base material, there can be very deep beat
Polishing scratch mark (scalelike mark), in subsequent work progress, which is difficult to get rid of, cover.Therefore, the present invention is to weld seam
When being polished, weldering meat height is made to be higher by 0.05~0.5mm of base material, which avoids polishing from injuring base material to above-mentioned lack occur
It falls into, smoothly polishes convenient for subsequent mechanical.
Further, before spraying nanometered disposal liquid, can first aluminum alloy bodywork be cleaned and is protected.Specifically
Ground can first clean the dust on aluminum alloy bodywork surface, then environment-friendly type volatile cleaning agent be used to clean aluminium alloy
The impression of the hand and greasy dirt of car body surface；Then, it can use protection adhesive tape that need not carry out corrosion-resistant to aluminum alloy bodywork surface
Position carries out close protection.
In the present invention, in the aluminum alloy bodywork surface spraying nanometered disposal liquid through mechanical surface treatment, for being closed in aluminium
Golden car body surface forms nano protecting layer；Specifically, the nanometered disposal liquid can be Changzhou Nanocoating Co., Ltd.
The NC305 of production is the nano-oxide colloidal sol that the alkoxide of silicon, aluminium, titanium and zirconium generates in sol-gel process, including
Nano silicon dioxide sol and nano titanic oxide sol, grain size are 19~90nm, and nano-particle is through fluorine carbon silane coupling agent
It is dispersed in alcohols with after other a few class organo-silicon coupling agent modifications, fine and close protection is self-assembly of after dry on ground
Layer, no waste water, waste residue and exhaust gas generate.
The present invention does not limit the thickness of the nano protecting layer strictly；Since the upper limit value of car body surface roughness is
1.2 μm, show that thickness reaches 10 μm and meets performance requirement additionally by test, and as the growth of the increase performance of thickness slows down,
Cohesive force is in the trend for dying down, being deteriorated, it is preferable that the thickness of the nano protecting layer is 3~10 μm.
In the present invention, the pencil hardness of the nano protecting layer is 7H or more (according to GB/T 6739-1996《Film hardness
Pencil measuring method》It measures)；Salt spray resistance is 800h or more (according to GB/T 1771《The survey of the resistance to neutral salt spray performance of paint and varnish
It is fixed》It measures)；Artificial weathering ageing resistance reaches 2000h or more；The excellent combination property of nano protecting layer.
Further, when carrying out the spraying, it is 60~90 ° that can control angle of gun, and spraying rate is 60~80cm/
s。
Specifically, 1.1mm spray guns may be used, 10~20% absolute ethyl alcohol or n-butanol, spray gun can be added before spraying
Distance could be provided as 25cm or so, and when plate face is perpendicular to the ground, the angle (i.e. angle of gun) between spray gun and plate face can
To be in 60 °~90 ° angles；Since solvent is alcohols, volatilization is fast, and under conditions of more than 25 DEG C, car body large area is sprayed
Using a three continuous spray techniques, spraying rate is 60~80cm/s.The process conditions are readily available to have above-mentioned performance
Nano protecting layer.
In particular, the inventors discovered that, when using wet on wet twice of spraying process, after first pass spraying, spray at first
Surface drying protects layer surface that corrugation, lifting phenomenon is presented to the nano surface protective layer of painting after second time spraying.Therefore, originally
The spraying method of invention does not use above-mentioned twice wet on wet spraying process, so as to overcome drawbacks described above.
In the present invention, Spanish furnish is carried out to aluminum alloy bodywork to require for realizing the art designing of aluminum alloy bodywork；To color
The mode of color equipment decorations does not limit strictly, and the conventional decorative mode of this field can be used.Preferably, the Spanish furnish is patch
Film.
Further, peel strength >=7N/cm of the pad pasting；Artificial weathering ageing resistance≤2 grade；Pad pasting it is comprehensive
It can be excellent.
The implementation of the present invention, at least has the advantage that：
1, method of the invention is filled by carrying out mechanical surface treatment, spraying nanometered disposal liquid and color to aluminum alloy bodywork
Decorations can provide good anti-corrosion protection and beautiful decorative appearance for aluminum alloy bodywork, and construction technology is simple and convenient to operate.
2, method of the invention can replace anti-corrosive primer, putty, middle painting in prior art by spraying nanometered disposal liquid
The attachment of the layered coatings such as paint, finishing coat, not only reduces car body weight, avoids harm caused by organic solvent and dust,
In addition production cost has been saved.
3, the hardness that the method for the present invention is formed by nano protecting layer is 7H, and salt fog resistance reaches 800h or more, resistance to artificial gas
It waits aging and reaches 2000h or more；Meanwhile peel strength >=7N/cm of pad pasting；Artificial weathering ageing resistance≤2 grade；Nanometer is anti-
The excellent combination property of sheath and pad pasting.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to this
Technical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of the every other embodiment that is obtained, shall fall within the protection scope of the present invention.
The raw material that various embodiments of the present invention use is as follows：
Nanometered disposal liquid：The NC305 produced using Changzhou Nanocoating Co., Ltd., grain size is in 19~90nm；
Pad pasting：Peel strength >=7N/cm of pad pasting, artificial weathering ageing resistance≤2 grade come from 3M companies.
Embodiment 1
The aluminum alloy railway vehicle manufacturing method of the present embodiment, includes the following steps：
Step 1：Car body welds
Specifically, after fixing device assembly in place is respectively adopted in car body roof, framed side wallboard, end wall panel, body frame, in perseverance
Determine to be stirred the weldering of friction welding group under intrusion, soldering tip rotating speed and speed of welding；Wherein, framed side wallboard is as decorative cover, weldering
Follow-up exterior decorative effect will be influenced by connecing quality, in order to eliminate the influence that effective bearing area is stitched in the Reducing thickness butt welding, framed side wallboard
Selection routine increases a convex configuration in welded seam area, and the height of the convex configuration is 0.5mm, width 6mm；In addition,
Control intrusion is 0.5mm, and soldering tip rotating speed is 1500r/min, speed of welding 500mm/min.
After testing, the flatness of aluminum alloy bodywork reaches 1mm/m.
Step 2：Car body surface mechanical treatment
Specifically, mechanical surface treatment includes the following steps：
(1) it uses 60# emery cloths or other milling tools to polish weld seam, polishing is avoided to injure base material and convenient for follow-up
Mechanical smooth polishing, weldering meat height are higher by base material, control this highly in 0.05mm；
(2) 60# emery cloths or other milling tools is used to carry out whole corase grinding, control rotating speed is 1800 turns/min, feeding speed
Degree is 8m/min, and volume under pressure 5mm, head track route is snakelike route and two kinds of route of straight trip；
(3) 240# emery cloths or thousand wheels is used to carry out the polishing of surface exquisiteness uniform state, control rotating speed is 1500 turns/min,
Feed speed is 5m/min, and volume under pressure 5mm, head track route is snakelike route and two kinds of route of straight trip；
(4) decoration wire drawing is carried out using thousand wheels of 80#, amplitude, wavelength, motor speed, indentation is adjusted according to decorative appearance
The parameters such as amount, straight-line feed amount, it is 5mm, wavelength 5mm, motor that the present embodiment, which uses the wire drawing appearance of snowflake silk, adjustment amplitude,
Rotating speed is 2000 turns, intrusion 2mm, and straight-line feed amount is 5m/min.
After above-mentioned surface mechanical treatment, a kind of flakes decorative appearance is formed on aluminum alloy bodywork surface；In addition, through inspection
It surveys, the roughness of aluminum alloy bodywork is 0.5 μm or so.
Step 3：Cleaning
First, the dust on the aluminum alloy bodywork surface after above-mentioned surface mechanical treatment is cleaned, then uses environmental protection
Type volatile cleaning agent cleans the impression of the hand and greasy dirt on aluminum alloy bodywork surface.
Step 4：Protection
Using protection adhesive tape close protection is carried out to being not required to corrosion-resistant position on aluminum alloy bodywork.
Step 5：Preservative treatment
To the aluminum alloy bodywork surface spraying nanometered disposal liquid NC305 through above-mentioned protection, formed on aluminum alloy bodywork surface
The nano protecting layer that thickness is 5 μm or so.
Specifically, spray coating constructing technique is：Under a clean ventilated environment, using bore be 0.8mm spray gun into
Row spraying, it is desirable that spraying is uniform, and spray gun is vertical with car body surface, move rifle speed at the uniform velocity, intersects spraying for twice, and no dew applies, without stream
The defects of pendant；Spraying process condition is：Using 1.1mm spray guns, 10% absolute ethyl alcohol of addition before spraying, spray gun distance about 25cm,
When plate face is perpendicular to the ground, spray gun is sprayed with plate face in 60 ° of angles；Painting environments are：Under the conditions of 28 DEG C, using one time three
Continuous spray technique, spraying rate 60cm/s.
After testing, the performance test results of nano protecting layer such as table 1.
The performance test results of 1 nano protecting layer of table
Step 6：Spanish furnish
It is required to carry out decoration positioning according to art designing；Specifically, 150mm wide, the construction of orange pad pasting are carried out, it is desirable that position location
Accurately, the defects of pad pasting is without bulge, and corner is without tilting.
After testing, the performance test results of pad pasting such as table 2.
The performance test results of 2 pad pasting of table
Embodiment 2
The aluminum alloy railway vehicle manufacturing method of the present embodiment, includes the following steps：
Step 1：Car body welds
Specifically, after fixing device assembly in place is respectively adopted in car body roof, framed side wallboard, end wall panel, body frame, in perseverance
Determine to be stirred the weldering of friction welding group under intrusion, soldering tip rotating speed and speed of welding；Wherein, framed side wallboard is as decorative cover, weldering
Follow-up exterior decorative effect will be influenced by connecing quality, in order to eliminate the influence that effective bearing area is stitched in the Reducing thickness butt welding, framed side wallboard
Selection routine increases a convex configuration in welded seam area, and the height of the convex configuration is 0.5mm, width 6mm；In addition,
Control intrusion is 0.5mm, and soldering tip rotating speed is 1500r/min, speed of welding 500mm/min.
After testing, the flatness of aluminum alloy bodywork reaches 1mm/m.
Step 2：Car body surface mechanical treatment
Specifically, mechanical surface treatment includes the following steps：
(1) it uses 80# emery cloths or other milling tools to polish weld seam, polishing is avoided to injure base material and convenient for follow-up
Mechanical smooth polishing, weldering meat height are higher by base material, control this highly in 0.5mm；
(2) 120# emery cloths or other milling tools is used to carry out whole corase grinding, control rotating speed is 2200 turns/min, feeding speed
Degree is 9m/min, and volume under pressure 6mm, head track route is snakelike route and two kinds of route of straight trip；
(3) 400# emery cloths or thousand wheels is used to carry out the polishing of surface exquisiteness uniform state, control rotating speed is 1700 turns/min,
Feed speed is 6m/min, and volume under pressure 5mm, head track route is snakelike route and two kinds of route of straight trip；
(4) decoration wire drawing is carried out using thousand wheels of 120#, amplitude, wavelength, motor speed, indentation is adjusted according to decorative appearance
The parameters such as amount, straight-line feed amount, it is 5mm, wavelength 5mm, motor that the present embodiment, which uses the wire drawing appearance of snowflake silk, adjustment amplitude,
Rotating speed is 2000 turns, intrusion 3mm, and straight-line feed amount is 5m/min.
After above-mentioned surface mechanical treatment, a kind of flakes decorative appearance is formed on aluminum alloy bodywork surface；In addition, through inspection
It surveys, the roughness of aluminum alloy bodywork is 1.0 μm or so.
Step 3：Cleaning
First, the dust on the aluminum alloy bodywork surface after above-mentioned surface mechanical treatment is cleaned, then uses environmental protection
Type volatile cleaning agent cleans the impression of the hand and greasy dirt on aluminum alloy bodywork surface.
Step 4：Protection
Using protection adhesive tape close protection is carried out to being not required to corrosion-resistant position on aluminum alloy bodywork.
Step 5：Preservative treatment
To the aluminum alloy bodywork surface spraying nanometered disposal liquid NC305 through above-mentioned protection, formed on aluminum alloy bodywork surface
The nano protecting layer that thickness is 10 μm or so.
Specifically, spray coating constructing technique is：Under a clean ventilated environment, carried out for 0.8mm spray guns using bore
Spraying, it is desirable that spraying is uniform, and spray gun is vertical with car body surface, move rifle speed at the uniform velocity, intersects spraying for twice, and no dew is applied, fallen without stream
The defects of；Spraying process condition is：Using 1.1mm spray guns, 20% absolute ethyl alcohol of addition before spraying, spray gun distance about 25cm, when
When plate face is perpendicular to the ground, spray gun is sprayed with plate face in 90 ° of angles；Painting environments are：Under the conditions of 28 DEG C, connected using one time three
Continuous spraying process, spraying rate 60cm/s.
Step 6：Spanish furnish
It is required to carry out decoration positioning according to art designing；Specifically, 150mm wide, the construction of orange pad pasting are carried out, it is desirable that position location
Accurately, the defects of pad pasting is without bulge, and corner is without tilting.
After testing, the performance of nano protecting layer meets 1 technical indicator of table；The performance of pad pasting meets 2 technical indicator of table.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of aluminum alloy railway vehicle manufacturing method, which is characterized in that include the following steps：
1) aluminum alloy bodywork is welded by agitating friction welding group；
2) mechanical surface treatment is carried out to the aluminum alloy bodywork；
3) it in the aluminum alloy bodywork surface spraying nanometered disposal liquid through the mechanical surface treatment, is formed on aluminum alloy bodywork surface
Nano protecting layer；
4) Spanish furnish is carried out to the aluminum alloy bodywork for being formed with the nano protecting layer.
2. aluminum alloy railway vehicle manufacturing method according to claim 1, which is characterized in that the aluminum alloy bodywork is put down
Whole degree is≤2mm/m.
3. aluminum alloy railway vehicle manufacturing method according to claim 1 or 2, which is characterized in that the control stirring rubs
The intrusion for wiping welding is 0.3~0.5mm, and soldering tip rotating speed is 1500~1700r/min, and speed of welding is 500~700mm/
min。
4. aluminum alloy railway vehicle manufacturing method according to claim 1, which is characterized in that through the mechanical surface treatment
Aluminum alloy bodywork roughness be 0.5~1.2 μm.
5. aluminum alloy railway vehicle manufacturing method according to claim 1 or 4, which is characterized in that at the mechanical surface
Reason includes the following steps：
The aluminum alloy bodywork is roughly ground, wherein control rotating speed is 1800~2200r/min, feed speed is 8~9m/
Min, volume under pressure are 5~6mm；
Fine grinding is carried out to the aluminum alloy bodywork, wherein control rotating speed is 1500~1700r/min, feed speed is 5~6m/
Min, volume under pressure 5mm.
6. aluminum alloy railway vehicle manufacturing method according to claim 1, which is characterized in that the nanometered disposal liquid is
NC305, grain size are 19~90nm.
7. aluminum alloy railway vehicle manufacturing method according to claim 1 or 6, which is characterized in that the nano protecting layer
Thickness be 3~10 μm.
8. aluminum alloy railway vehicle manufacturing method according to claim 7, which is characterized in that the lead of the nano protecting layer
Hardness is 7H or more, and salt spray resistance is 800h or more.
9. aluminum alloy railway vehicle manufacturing method according to claim 1 or 6, which is characterized in that when carrying out the spraying,
It is 60~90 ° to control angle of gun, and spraying rate is 60~80cm/s.
10. aluminum alloy railway vehicle manufacturing method according to claim 1, which is characterized in that the Spanish furnish is patch
Film.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560394A (en) * | 2004-02-27 | 2005-01-05 | 王其昌 | Making method of nano aluminium alloy movable dwellings |
| CN101691978A (en) * | 2009-09-30 | 2010-04-07 | 重庆大学 | Aluminum honeycomb type evaporation plate and processing molding method thereof |
| CN102179613A (en) * | 2011-03-08 | 2011-09-14 | 张昆 | Method for preparing welding layer and coating layer on surface of steel rail and soldering flux thereof |
| CN103642365A (en) * | 2013-11-18 | 2014-03-19 | 中国人民解放军92537部队 | Aluminium alloy corrosion self-repair intelligent coating for boats and preparation method thereof |
-
2017
- 2017-12-27 CN CN201711451200.9A patent/CN108326511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560394A (en) * | 2004-02-27 | 2005-01-05 | 王其昌 | Making method of nano aluminium alloy movable dwellings |
| CN101691978A (en) * | 2009-09-30 | 2010-04-07 | 重庆大学 | Aluminum honeycomb type evaporation plate and processing molding method thereof |
| CN102179613A (en) * | 2011-03-08 | 2011-09-14 | 张昆 | Method for preparing welding layer and coating layer on surface of steel rail and soldering flux thereof |
| CN103642365A (en) * | 2013-11-18 | 2014-03-19 | 中国人民解放军92537部队 | Aluminium alloy corrosion self-repair intelligent coating for boats and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 王炎金 等: "铝合金车体制造关键技术研究", 《焊接》 * |
| 肖庆丹 等: "铝合金轮毂表面处理新技术", 《现代零部件》 * |
| 谢建新: "《材料加工新技术与新工艺》", 30 March 2004, 冶金工业出版社 * |
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