CN106676455B - The method of raising contact fatigue property is combined in a kind of texturing with coating process optimization - Google Patents
The method of raising contact fatigue property is combined in a kind of texturing with coating process optimization Download PDFInfo
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- CN106676455B CN106676455B CN201510740995.XA CN201510740995A CN106676455B CN 106676455 B CN106676455 B CN 106676455B CN 201510740995 A CN201510740995 A CN 201510740995A CN 106676455 B CN106676455 B CN 106676455B
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- coating
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- spraying
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- texturing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Abstract
The present invention provides a kind of texturings to combine the method for improving contact fatigue property with coating process optimization, this method is parameter in control spraying process, spray-on coating is set to have certain light and shade layer spacer structure, then it is simulated by bionics, prepares the textured pattern of different-shape on spray-on coating surface.Coat side texturing of the invention is matched with coating itself light and shade phase structure to be formed textured pattern and can be improved the military service performance and anti-fatigue performance of coating.The spacing and thickness of light and shade layer by controlling coating of the invention, the performance of coating can be made to be optimized, while improving the military service performance and anti-fatigue performance of entire spray-on coating using the method that coat inside light and shade interlamellar spacing is matched with coating surface texturing.
Description
Technical field
The present invention relates to sprayed on material technical fields, and in particular to a kind of texturing combine to improve with coating process optimization to be connect
The method for touching fatigue behaviour.
Background technique
Since spray-on coating itself has voidage relatively high, there is the defects of being mingled with, fiber crack, so that spraying applies
Layer easily forms crack propagation during military service, leads to service life reduction.The promotion of existing surface covering performance is mainly being applied
Using secondary operation technologies such as laser remolten, surface peenings after layer forming, although promotion of these technological means to coating performance
Certain effect is played, but macro property is the exterior representations of material internal structure and quality, so these technologies can not be right
The military service performance for having formed fixing internal structure coating inherently has a distinct increment.
Supersonic Plasma Spraying technology is answered extensively because it can prepare the coating of thicker degree on heavy parts
Used in Practical Project field, the coating of material difference system in more may be implemented by plasma spraying technology, such as metal and conjunction
Gold, ceramics, cermet and plastics etc., and spray-on coating also embodies different functions, such as wear-resisting, thermal boundary, conduction, anti-spoke
It penetrates.But since spray-on coating itself has voidage relatively high, there is the defects of being mingled with, fiber crack, so that spraying
Coating easily forms crack propagation during military service, leads to service life reduction.
Texturing has been widely used in the research of antifriction antiwear, and is had been realized in by textured method
The main reason for performance of material increases substantially, and texturing can be improved material friction performance is because it can store mill
Bits and lubricating oil provide continuous lubrication to friction surface, but texture are improved spraying as a kind of spraying pre-treatment means
The binding force of coating, as a kind of post-processing means come improve spray-on coating anti-fatigue performance and by textured pattern with
Spray-on coating light and shade phase structure matches to realize that the textured locking action of the Trinity finally realizes coating military service performance
The research of raising is less.
Summary of the invention
In order to improve the service life of coating, the performance of coating is extended, the object of the present invention is to provide a kind of texture
Change and combines the method for improving contact fatigue property with coating process optimization.
Another object of the present invention is to provide a kind of texturing figure that can effectively improve spray-on coating anti-fatigue performance
Case.
In order to achieve the object of the present invention, optimize joint raising with coating process the present invention provides a kind of texturing to contact
The method of fatigue behaviour, this method are to control parameter in spraying process to make to control the spacing and thickness of the light and shade layer of coating
Spray-on coating has certain light and shade layer spacer structure, is then simulated by bionics, prepares not on spray-on coating surface
With the textured pattern of pattern.The light and shade layer is also known as white black layer, is the white coating structure alternate with black layer；Wherein bright layer is
White is to seem brighter part, and wherein blindstory, that is, black layer is seemed than darker part.
Specifically, the method for the present invention includes following steps:
(1) matrix is sprayed using Supersonic Plasma Spraying method, in spraying process, constantly adjustment sprays work
Skill parameter makes entire coating have certain thickness light and shade layer spacer structure；
(2) texturing processing is carried out to coating surface using laser process.
Preferably, the matrix in this method step (1) further includes cleaning grinding process.The preferred stainless steel of described matrix, tool
Body selects FV520B.
Preferably, spraying selected coating is NiCrBSi ceramic coating, Supersonic Plasma Spraying obtain with a thickness of
100 microns of spray-on coating, wherein the granularity of NiCrBSi powder is 50-60 microns.
Preferably, the spraying parameter are as follows: spray power 45-85kW；Wherein, the black layer, spray distance 80-
140mm, spraying rate 6-10g/min；The white, spray distance 120-160mm, spraying rate 9-12g/min.
It is furthermore preferred that the spray distance of the black layer is 140mm, spraying rate 10g/min；The spraying of the white away from
From 100mm, spraying rate 8g/min.
Preferably, the white and black layer with a thickness of 1-7 μm.
It is furthermore preferred that the white is with a thickness of 4-6 μm, black layer is with a thickness of 2-7 μm.
Preferably, in step (2) laser process specific process parameter are as follows: laser power 80-120W, surface sweeping speed are
600-900mm/s, frequency 15-25HZ.The depth that selected texture is controlled by controlling the energy of laser, passes through laser texturing
The regular textured pattern of the available certain size of change method, certain density.
Further, the present invention provides the textured patterns that one kind can effectively improve spray-on coating anti-fatigue performance.
The pattern includes the combination of any geometrical pattern or several geometrical patterns, such as circle, triangle, hexagon, ditch flute profile, grid
Shape, arrow-shaped or stripe-shaped etc..
Preferably, the textured pattern is arrow-shaped.
It is furthermore preferred that the density of the textured pattern is greater than 0%, and less than 50%；Textured pattern is in matrix
Or area ratio, that is, density shared by coating surface.
Laser used in the present invention is pulse laser, and energy used and processing times decide the depth of textured pattern
Degree, the drawing software carried by system, can be by required certain size certain shapes according to the texturing of a fixed spacing
Pattern is drawn in advance, is then processed to specimen surface, the textured pattern of available fine size structure.
Beneficial effects of the present invention are as follows:
The spacing and thickness of light and shade layer by controlling coating of the invention, can be such that the performance of coating is optimized, together
The method that Shi Liyong coat inside light and shade interlamellar spacing is matched with coating surface texturing improves the military service of entire spray-on coating
Performance and anti-fatigue performance.
Detailed description of the invention
The firmness change of Fig. 1 different-thickness light and shade layer coating of the present invention；
Fig. 2 coating surface fatigue strength of the present invention with hardness variation；
The fatigue strength of coating under Fig. 3 coating surface difference texture shape of the present invention；
Fig. 4 fatigue strength of the present invention with arrow-shaped texture angle variation；
Fig. 5 coating light and shade layer of the present invention and coating surface texturing schematic diagram.
Appended drawing reference is as follows:
Matrix 1, coating 2, matrix surface texturing 3, coating surface texturing 4.
Specific embodiment
Further describe beneficial effects of the present invention by the following examples, it should be understood that these embodiments are only
For illustration purposes, it is never limited in protection scope of the present invention.
Embodiment 1 prepares the coating of three layer textures coupling
Step 1:
Cleaning grinding process is carried out to matrix first, the preferred stainless steel of described matrix specifically selects FV520B.
Second step
Spraying equipment selects mining and metallurgy to study the efficient GTV F6 plasma spraying equipment of total institute in the step (2), sprays
Applying selected coating is NiCrBSi ceramic coating, and Supersonic Plasma Spraying obtains applying with a thickness of the spraying of 100 microns
Layer, wherein the granularity of NiCrBSi powder is 56 microns.
Spraying parameter is spray power 80kW, and the spray distance of the black layer is 140mm, spraying rate 10g/
min；The spray distance 100mm of the white, spraying rate 8g/min；Obtain the light and shade thickness degree of coating are as follows: 5 μm of white, black
4 μm of layer.
Third step
Texturing processing is carried out to coating surface using laser process
Laser power is 80W, scanning speed 600mm/s, frequency 20HZ, available by the method for laser texturing
Depth is 60 microns, the textured pattern that density is 40%, specific pattern are as follows: round and stripe-shaped, hexagon, triangle, arrow
Capitiform, stripe-shaped.
Wherein round to combine with stripe-shaped, stripe-shaped width is 50 microns, and fringe spacing is 70 microns, and circle is uniformly distributed
Among stripe-shaped texture, diameter is 50 microns；
Hexagonal side length is 60 microns, and spacing is 70 microns；
A length of 95 microns of triangle edges, two triangle base fixed point spacing are 70 microns；
Arrow-shaped width is 60 microns, and width is the vertical range on two sides, and the spacing of each arrow is 70 microns；
Stripe-shaped width is 50 microns, and spacing is 70 microns.
Wherein, matrix surface is grid-shaped coating surface, and coating surface is that the sagittate double-deck texturing couples coating
Schematic diagram refers to attached drawing 5.
2 comparative example of embodiment
In 1 identical conditional parameter of embodiment, spray-on coating is prepared on no textured matrix and is carried out in fact
Test comparison.
Embodiment 3 carries out rolling contact fatigue test to coating prepared by embodiment 1, and changes the slippage of contact fatigue
Rate observes the anti-fatigue performance of coating under the conditions of different slips.
In order to measure the properties of coating, after the observation spraying of Nova NanoSEM450 type scanning electron microscope
The geometrical morphology of texture.
In order to test influence of the different textured patterns to the anti-fatigue performance of spray-on coating, tried using rolling contact fatigue
Machine is tested to test the fatigue behaviour of spray-on coating.
It 1, is coating hardness with the variation of white thickness in coating light and shade phase
It the use of fatigue tester is respectively 1-3 microns to white thickness in coating, 2-4 microns, 3-5 microns, 4-6 microns,
5-7 microns of coating carries out testing fatigue, and test results are shown in figure 1, it is found that the fatigue strength of coating is with white in coating
The thickness of layer and change, when white is in coating with a thickness of 4-6 micron, the fatigue strength of coating is maximum, for 780HV.
It 2, is the fatigue resistance of coating with the variation of hardness
Testing fatigue is carried out to the coating of different hardness, using rolling contact fatigue-testing machine, it is found that the fatigue of coating is strong
Degree increases with the increase of the hardness of coating, and test results are shown in figure 2, so light and shade thickness corresponding to selection hardness maximum
Degree, i.e., white 4-6 microns, to obtain preferably anti-fatigue performance.
3, under coating surface difference texture shape coating fatigue strength
Influence for testing coating textured pattern to anchoring strength of coating carries out fatigue strength to textured coating
Test, device therefor are common fatigue tester.Test results are shown in figure 3, the bond strength without textured coating surface
For 500MPa, and the fatigue strength under coating surface different shape texture is between 500MPa to 600MPa, relative to no texture
The coating surface of change has the coating surface of textured pattern to have preferable fatigue resistance, and the fatigue strength of coating is with knitting
The shape of structure pattern and change, in selected figure, arrow-shaped texture have optimal fatigue strength, be 590MPa.
4, fatigue strength with arrow-shaped texture angle variation
For influence of the angle to coating fatigue strength of arrow-shaped texture in test case 3 the 2nd point, change arrow-shaped
Angle, prepared arrow-shaped angle is 15 degree, 25 degree, 35 degree, 45 degree, to the sagittate pattern of the different angle of preparation into
It is consistent in the 2nd point in row testing fatigue, testing machine used and example 3.Test results are shown in figure 5, is the fatigue strength of coating
With the variation of arrow texture angle, it can be seen that the fatigue strength of coating is changed with texturing angle, and texturing angle
Degree has an optimal value, when arrow texture angle is at 35 degree, the fatigue strength highest of coating.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of texturing combines the method for improving contact fatigue property with coating process optimization, which is characterized in that this method
It is to control parameter in spraying process to make spray-on coating have certain light and shade layer to control the spacing and thickness of the light and shade layer of coating
Spacer structure, wherein the spray distance 80-140mm of black layer, spraying rate 6-10g/min；The spray distance of white is 120-
160mm, spraying rate 9-12g/min；Then it is simulated by bionics, prepares different-shape on spray-on coating surface
Textured pattern.
2. the method as described in claim 1, which is characterized in that this method comprises the following steps:
(1) matrix is sprayed using Supersonic Plasma Spraying method, in spraying process, constantly adjusts spraying process ginseng
Number, makes entire coating have certain thickness light and shade layer spacer structure；
(2) texturing processing is carried out to coating surface using laser process.
3. method according to claim 2, which is characterized in that the matrix in this method step (1) further includes cleaning burnishing part
Reason.
4. the method as described in claims 1 to 3 any one, which is characterized in that spray selected coating as NiCrBSi pottery
Porcelain coating, Supersonic Plasma Spraying obtain the spray-on coating with a thickness of 100 microns, and wherein the granularity of NiCrBSi powder is 50-
60 microns.
5. the method as described in claims 1 to 3 any one, which is characterized in that the spraying parameter are as follows: spray power
45-85kW。
6. the method as described in claim 2~3 any one, which is characterized in that white described in step (1) is with a thickness of 4-6 μ
M, black layer is with a thickness of 2-7 μm.
7. the method as described in claim 2~3 any one, which is characterized in that the concrete technology of laser process in step (2)
Parameter are as follows: laser power 80-120W, scanning speed 600-900mm/s, frequency 15-25HZ.
8. the method as described in claim 2~3 any one, which is characterized in that described matrix is stainless steel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740995.XA CN106676455B (en) | 2015-11-04 | 2015-11-04 | The method of raising contact fatigue property is combined in a kind of texturing with coating process optimization |
| US15/341,581 US20170121808A1 (en) | 2015-11-04 | 2016-11-02 | Method for enhancing anti-fatigue performance of coating |
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| CN201510740995.XA CN106676455B (en) | 2015-11-04 | 2015-11-04 | The method of raising contact fatigue property is combined in a kind of texturing with coating process optimization |
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| CN106676455B true CN106676455B (en) | 2019-08-02 |
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| CN107761042A (en) * | 2017-10-09 | 2018-03-06 | 江苏大学 | A kind of short groove array processing method for going deep into coated substrate |
| CN110468364B (en) * | 2019-09-11 | 2021-08-06 | 苏州大学 | Treatment method for promoting mechanical and metallurgical bonding between film-substrate interfaces of thermal spraying coating |
| CN116045791B (en) * | 2023-04-03 | 2023-07-21 | 成都飞机工业（集团）有限责任公司 | Metal paint coating thickness assessment method |
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