CN109023211A - A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and preparation method thereof - Google Patents
A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and preparation method thereof Download PDFInfo
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- CN109023211A CN109023211A CN201811188637.2A CN201811188637A CN109023211A CN 109023211 A CN109023211 A CN 109023211A CN 201811188637 A CN201811188637 A CN 201811188637A CN 109023211 A CN109023211 A CN 109023211A
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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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
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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
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
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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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/123—Spraying molten metal
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The present invention relates to a kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coatings and preparation method thereof, belong to technical field of material surface treatment.The preparation method includes: to spray iron oxide yellow copper powders in hydraulic actuator matrix surface using air-breathing supersonic flame spraying method, and the temperature of matrix is cooled to not higher than 180 DEG C using compressed air, is ground and is polished after the completion of spraying by spraying process.This method is simple and reliable, and preparation efficiency is high, and production cost is low, and environmental pollution is small.The hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating bond strength with higher being obtained by this method, even tissue is fine and close, and hardness is moderate, and wear resistant friction reducing is had excellent performance.
Description
Technical field
The invention belongs to technical field of material surface treatment, and in particular to a kind of hydraulic actuator wear resistant friction reducing iron brass
Coating and preparation method thereof.
Background technique
Pressurized strut is to control all types of control planes or the driving device of other component movement on aircraft, it can be by input
Hydraulic energy is changed into mechanical energy, is the executive component for realizing operating mechanism's straight reciprocating motion or pendulum motion.In aircraft
In hydraulic system, pressurized strut is answered the features such as easy maintenance extensively since structure is simple, design and manufacture are easier
For the manipulation of rudder face, the folding and unfolding of undercarriage, wing flap and flap, engine tail nozzle, THR REV, inlet cone and fuel pump
The occasions such as manipulation.It is set in addition, pressurized strut is also widely used in engineering machinery, mining machinery, agricultural machinery, ship, metallurgy
In standby and other automation equipment devices.
Pressurized strut is component indispensable in hydraulic control system, regardless of its structure type, the basic composition of pressurized strut
Substantially it is made of components such as cylinder, piston, piston rod, end cap, sealing and inlet and outlet pipings.During military service, piston is by oil pressure
It acts in cylinder barrel and moves reciprocatingly, therefore piston must have certain intensity, gap is only leaned on for no sealing device
Guarantee the piston of sealing performance, should also there is good wear-resisting property.Piston rod is then the biography for connecting piston and workpiece
Power part, it must have enough strength and stiffness.Back and forth movement, periphery should also be as having resistance in guide sleeve when work
Grind performance.During long service, pistons end or piston rod easily occur scratching or clashing and breaking phenomenon, if it exceeds defined match
When closing gap, the sealing rubber ring in pressurized strut can be damaged, leads to oil leak, and then influence pressurized strut performance, or even threatens flight peace
Entirely.
Usually damaged location is repaired by the way of polishing or grinding, if but being more than that when providing fit clearance, will report
Useless processing, loses huge.To solve this problem, coating one layer of wear resistant friction reducing coating in working face is economically viable method.Electricity
Hard chrome is plated as a kind of common surface peening mode, the criss-cross micro-crack network in coating inside can effectively reduce remnants and answer
Power is simultaneously conducive to storage lubricating oil, has remarkable effect to abrasion is reduced.However, the technology, which reduces, bears larger alternating load zero
The flexible life of part, wearability is also difficult to meet higher and higher requirement, and preparation process has serious dirt to environment
Dye, it is trend of the times that the more environmentally friendly technology of use, which carries out surface treatment,.Chemical plating and gas phase deposition technology are also because of deposition speed
Spend that relatively low, coating internal stress is higher to be caused easily to occur adhering to and crack problem, under top load service condition coating be easy to fall off or
It collapses and limits the application in pressurized strut.
Iron brass is excellent wear resistant friction reducing, anti-corrosion and hold because having a high intensity, toughness, good machinability
It carries performance and can be used as the friction pair materials of the components such as hydraulic actuator.However, if directly using casting iron oxide yellow copper alloy, just
Degree and wear-resisting property are still difficult to meet more and more harsh military service demand.It is one in steel matrix that iron oxide yellow copper-manganese oxide, which is attached to,
The effective means of kind.However, the liquid phases interconnection technique such as welding is difficult to overcome steel matrix heat treatment temperature molten lower than copper alloy
The contradiction of point, will cause substrate performance sharp fall and deformation.Diffusion welding craft temperature is not high, but the heat of matrix and copper alloy
The coefficient of expansion differs greatly, and copper alloy is often difficult to keep good with matrix to contact when the temperature increases, causes welding defect, at
Product rate is extremely low.Friction welding (FW) is difficult to the connection of hydraulic actuator matrix and iron brass due to complex operation etc..
Therefore, it is necessary to seek a kind of iron brass coating production for effectively improving pressurized strut wear resistant friction reducing performance.
Summary of the invention
One of the objects of the present invention is to provide a kind of preparation methods of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating, should
Method is simple and reliable, and preparation efficiency is high, and production cost is low, and environmental pollution is small.
Another object of the present invention is to provide a kind of hydraulic actuator wear resistant friction reducing iron prepared by the above method
Brass coating, the hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating bond strength with higher, even tissue is fine and close, and hardness is suitable
In, wear resistant friction reducing is had excellent performance.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The present invention proposes a kind of preparation method of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating, comprising the following steps: adopts
Iron oxide yellow copper powders are sprayed in the matrix surface of hydraulic actuator with air-breathing supersonic flame spraying method, spraying process uses
The temperature of matrix is cooled to not higher than 180 DEG C by compressed air, is ground and is polished after the completion of spraying.
The present invention also proposes a kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating being prepared by above-mentioned preparation method.
In preferred embodiments, the oxygen content for preparing resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is less than
0.5%；Or the porosity of resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is less than 1.0%；Or resulting hydraulic actuation
The hardness of cylinder wear resistant friction reducing iron oxide yellow copper coating is 200-250HV0.3；Or resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating
It is greater than 50MPa with the bond strength of matrix.
The hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and preparation method thereof that present pre-ferred embodiments provide it is beneficial
Effect includes:
The preparation method for the hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating that present pre-ferred embodiments provide is simple and reliable,
Preparation efficiency is high, and production cost is low, and environmental pollution is small.Thus obtained hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating has
Higher bond strength, even tissue is fine and close, and hardness is moderate, and wear resistant friction reducing is had excellent performance.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is iron oxide yellow copper powders used in embodiment 1 and prepares resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating
Object phase composition figure；
Fig. 2 is the Cross Section Morphology figure that embodiment 1 prepares resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating；
Fig. 3 is that embodiment 1 prepares the surface shape after resulting hydraulic actuator wear resistant friction reducing iron brass coating abrasion test
Looks figure.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating of the embodiment of the present invention and preparation method thereof is carried out below specific
Explanation.
Hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating provided by the present application, is mainly attached to the matrix table of pressurized strut
Face and formed.
In this application, hydraulic actuator of the pressurized strut as straight reciprocating motion or pendulum motion should have enough
Intensity, it is each as caused by hydraulic, vibration, acceleration, temperature change to guarantee when can bear work in entire lifetime
Kind load and load combinations.Actuation cylinder piston or the material of piston rod can be high-intensitive structural alloy steel, such as can wrap
Include 30CrMnSiNi2A, 18Cr2Ni4WA or 30CrMnSiA etc..
It can refer to, the preparation method of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is the following steps are included: using air
Combustion-supporting supersonic flame spraying method sprays iron oxide yellow copper powders in the matrix surface of hydraulic actuator, and spraying process is empty using compression
The temperature of matrix is cooled to not higher than 180 DEG C by gas, is ground and is polished after the completion of spraying.
It can be avoided using air-breathing supersonic flame spraying method and prepare iron oxide yellow copper coating in the following ways and deposited
Various problems: low-voltage plasma spraying carries out in vacuum chamber, and inconvenient and efficiency is lower；Cold spraying due to spray away from
Short, when spraying complex profile workpiece and small size inner hole, there are larger difficulty；It is prepared by electric arc spraying, air plasma spraying
Coating porosity is high, and oxidation is serious；Easily there is nozzle adhesion and low melting point element burning phenomenon in conventional supersonic flame spraying,
Spray efficiency and coating quality all can be by large effects.
In this application, it is 75- that the spraying conditions of air-breathing supersonic flame spraying, which include: the pressure of primary fuel stream,
95psi and/or compressed air pressure are 75-95psi and/or nitrogen flow is 35-50L/min and/or hydrogen flowing quantity is 7-
12L/min and/or powder feeding rate are 30-60g/min, and/or spray away from being for 150-250mm and/or workpiece rotation speed
150-300rpm and/or spray gun movement speed are 10-30mm/s；Primary fuel stream includes propane or propylene.
Above-mentioned spraying process is with air-breathing, and flame has the characteristics that temperature is lower and oxidisability is weaker, in conjunction with above-mentioned
The spraying conditions of spray gun can make the speed with higher of the particle in flame and lower temperature, so that powder be effectively reduced
The oxidation and decomposition of coating material.Resulting residual stress in coating is small after spraying through the above way, the thickness of spray-on coating
Degree be it is unapproachable with general heat spraying method, hydraulic actuator wear resistant friction reducing iron brass coating layer thickness after spraying can be with
Reach 0.8-2.2mm or even 10mm.
In addition, spraying process carries out pressure cooling using compressed air, substrate temperature is strict controlled in 180 DEG C hereinafter, same
It Shi Jia great compressed air intensity of cooling and reduces to the greatest extent in same position spraying process and stops rifle number, coating point can be effectively prevented
The phenomenon that layer.
In this application, by by iron brass powder spray in matrix surface, iron brass intensity with higher and toughness,
Good machinability, corrosion resistance, wear resistant friction reducing and load-carrying properties.Wherein, iron is mainly to add in iron oxide yellow ketone powder
Element can be precipitated in brass with the particle of Fe-riched phase, as the cast sturcture of " nucleus " refinement brass, and can prevent to tie again
Jingjing grain length is big, to improve the mechanical property and processing performance of coating.
In some preferred embodiments, iron oxide yellow copper powders use the preparation of aerosolization method to form spherical powder, thus
It can guarantee powder sphericity with higher and preferable mobility, the particle beams be conducive in spraying process and is concentrated, to have
Effect improves its deposition efficiency, reduces the melting loss of elements in spraying process.
Since iron brass contains the elements such as Zn, Sn and Al of low melting point, powder particle in melted by heat flight course, if
Fine particle is excessive or in irregular shape, easily causes nozzle adhesion phenomenon, and then influence whether spray efficiency and coating quality,
The problem of increasing production and maintenance cost.Preferably, the granularity of iron oxide yellow copper powders is -60+15 μm in the application, grain is strictly limited
Diameter is in 10 μm of fine powders below.Iron oxide yellow copper powders in above range can be removed fine powder therein by gradation sizing and be obtained.
It is worth noting that application scheme in implementation process, is preferably matched in the ingredient of original spraying iron oxide yellow copper powders
Than upper, including Zn, Mn and Cu in spraying process etc. the easily costing bio disturbance of scaling loss element, realize that the scaling loss amount in spraying process is steady
It is fixed, to guarantee coating composition within acceptability limit.
It further include that oil removing, blasting treatment and the pre-heat treatment are carried out to matrix before spraying iron oxide yellow copper powders in the application.
It can refer to ground, use alcohol washes after workpiece to be sprayed is used gasoline or acetone degreasing degreasing, and press from both sides using tooling
Tool or adhesive tape carry out masking protection to non-spraying position.Blasting treatment is made to spraying position using 24-46# fused alumina zirconia, remove to
Spraying surface oxidized skin improves the bond strength between coating and matrix to increase surface-active.Blasting pressure is controllable to 0.3-
0.5MPa.Remaining sand grains or dust are blown off with compressed air after blasting treatment, make sprayed surface roughness uniformity and nothing
Metallic luster and pollution-free.
Further, the workpiece through sandblasting is mounted in suitable frock clamp, spray is utilized under conditions of non-powder feeding
Rifle flame stream carries out the pre-heat treatment to matrix, to improve the temperature that coating is contacted with matrix surface, reduces the heat because of matrix and coating
The stress that differences in expansion generates enhances the bond strength of coating and matrix.The pre-heat treatment that the present invention uses is the art
General technology, the specific processing parameter present invention to it without limitation.
After completing preheating, powder feeder is opened rapidly, and starting spray procedure starts spraying after powder feeding is stablized.
Further, the application is after spray coating also ground coating and polishing treatment, to avoid pressurized strut in conduct
In the hydraulic actuator motion process of straight reciprocating motion or pendulum motion, piston or piston rod are in matching cylinder barrel
Wall or guide sleeve cause scuffing or clashing and breaking.
In the application, the surface roughness Ra of iron oxide yellow copper coating is mainly adjusted to 0.5-0.8 μm by grinding.It can refer to
Ground, grinding can successively include corase grinding and fine grinding, and it is 20- that corase grinding, which can be with 46-60# black silicon carbide grinding wheel in workpiece rotational frequency,
It is carried out under conditions of 50rpm, fine grinding can be with 80-120# black silicon carbide grinding wheel under conditions of workpiece rotational frequency is 20-50rpm
It carries out.
Further, coating can be also processed by shot blasting after fine grinding, polishing treatment is mainly by the table of iron oxide yellow copper coating
Surface roughness Ra is adjusted to not higher than 0.2 μm.It can refer to ground, polishing treatment can be in the item that workpiece rotational frequency is 400-800rpm
Under part, successively polished using 60,30 and 15 μm of diamond polishing band.
The thickness of iron oxide yellow copper coating after polishing is up to 0.5-2.0mm.
Preferably, the oxygen content of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating obtained in the application is less than 0.5%, or
The porosity of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is less than 1% or hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating
Hardness is 200-250HV0.3Or the bond strength of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and matrix is greater than 50MPa.
It holds, the preparation method of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating provided herein is to be helped using air
It fires supersonic flame spraying method and sprays iron oxide yellow copper powders in hydraulic actuator matrix surface.Wherein, air-breathing supersonic speed fire
The flame temperature of flame spraying is reduced compared with the combustion-supporting supersonic flame spraying of typical oxygen, and oxidisability weakens；It is corresponding, in flame
Particle speed with higher and lower temperature can be effectively reduced the oxidation and decomposition of coating material.Meanwhile dusty spray
The aerosolization spherical powder for selecting partial size more suitable, effectively prevents the nozzle adhesion phenomenon in spraying process.
Including the costing bio disturbance of the elements such as Zn, Mn and Cu in spraying process in starting powder composition proportion, by
Increase easy scaling loss ingredient in starting powder, while by carrying out accurate grading control to powder size distribution, it is ensured that spraying
Scaling loss amount in the process is stablized, and the requirement of coating composition is reached.
Thus obtained hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating has bond strength height, good compactness, hardness suitable
The features such as middle.Residual stress is small in coating, is suitable for preparing big thickness coatings.Particularly, the hydraulic actuator being prepared is resistance to
The iron brass coating microhardness that rubs is worn away higher than as cast condition iron brass, there are the oxidation product hard of a small amount of Dispersed precipitate for coat inside
Point and the lubricating oil of the equally distributed micro-pore storage of coat inside can play lubrication well in friction process and make
With so that prepared iron oxide yellow copper coating be made to have excellent wear resistant friction reducing performance.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is present embodiments provided, preparation method includes:
1. by the way that starting powder gradation sizing is removed attritive powder, by powder size control in -45+15 μ m.
2. after the 30CrMnSiA alloy structure steel workpiece degreasing degreasing of Φ 57mm, using frock clamp or adhesive tape to non-
Spraying position carries out masking protection, carries out blasting treatment to spray-coating surface, sand material is 24# fused alumina zirconia, and the control of blast pressure exists
0.35MPa, specimen surface roughness uniformity after blast, and sand grains remained on surface is blown away with compressed air.
3. primary fuel stream propane pressure is 82psi, compressed air pressure is 86psi, nitrogen flow 43L/min, hydrogen
Throughput is 10L/min, powder feeding rate 35g/min, and spray is away from being 200mm, and workpiece rotation speed is 200rpm, and spray gun is mobile fast
Degree is 18mm/s, and the thickness of the iron oxide yellow copper coating after spraying reaches 1.5mm.
4. successively being roughly ground and being refined using 46# and 80# black silicon carbide grinding wheel, in the condition that workpiece rotational frequency is 35rpm
Under, grinding iron oxide yellow copper coating to surface roughness Ra is 0.75 μm.Under conditions of workpiece rotational frequency is 600rpm, successively use
60,30 and 15 μm of diamond polishing band is polished, until the surface roughness Ra of iron oxide yellow copper coating is 0.15 μm.Apply thickness
Degree is 1.2mm, then carries out degreasing degreasing processing.
Embodiment 2
A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is present embodiments provided, preparation method includes:
1. by the way that starting powder gradation sizing is removed attritive powder, by powder size control in -60+20 μ m.
2. utilizing frock clamp or adhesive tape pair after the 30CrMnSiNi2A alloy structure steel workpiece degreasing degreasing of Φ 45mm
Non-spraying position carries out masking protection, carries out blasting treatment to spray-coating surface, sand material is 46# fused alumina zirconia, the control of blast pressure
The specimen surface roughness uniformity after 0.45MPa, blast, and sand grains remained on surface is blown away with compressed air.
3. primary fuel stream propylene pressure is 85psi, compressed air pressure is 90psi, nitrogen flow 38L/min, hydrogen
Throughput is 12L/min, powder feeding rate 50g/min, and spray is away from being 240mm, and workpiece rotation speed is 250rpm, and spray gun is mobile fast
Degree is 25mm/s, and the thickness of the iron oxide yellow copper coating after spraying reaches 2.0mm.
4. successively being roughly ground and being refined using 54# and 90# black silicon carbide grinding wheel, in the condition that workpiece rotational frequency is 40rpm
Under, grinding iron oxide yellow copper coating to surface roughness Ra is 0.70 μm.Under conditions of workpiece rotational frequency is 700rpm, successively use
60,30 and 15 μm of diamond polishing band is polished, until the surface roughness Ra of iron oxide yellow copper coating is 0.08 μm.Apply thickness
Degree is 1.7mm, then carries out degreasing degreasing processing.
Embodiment 3
A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is present embodiments provided, preparation method includes:
1. by the way that starting powder gradation sizing is removed attritive powder, by powder size control in -60+15 μ m.
2. after the 18Cr2Ni4WA alloy structure steel workpiece degreasing degreasing of Φ 60mm, using frock clamp or adhesive tape to non-
Spraying position carries out masking protection, carries out blasting treatment to spray-coating surface, sand material is 30# fused alumina zirconia, and the control of blast pressure exists
0.40MPa, specimen surface roughness uniformity after blast, and sand grains remained on surface is blown away with compressed air.
3. primary fuel stream propane pressure is 87psi, compressed air pressure is 87psi, nitrogen flow 46L/min, hydrogen
Throughput is 8L/min, powder feeding rate 42g/min, and spray is away from being 170mm, and workpiece rotation speed is 180rpm, and spray gun is mobile fast
Degree is 16mm/s, and the thickness of the iron oxide yellow copper coating after spraying reaches 0.8mm.
4. successively being roughly ground and being refined using 60# and 120# black silicon carbide grinding wheel, in the condition that workpiece rotational frequency is 40rpm
Under, grinding iron oxide yellow copper coating to surface roughness Ra is 0.77 μm.Under conditions of workpiece rotational frequency is 500rpm, successively use
60,30 and 15 μm of diamond polishing band is polished, until the surface roughness Ra of iron oxide yellow copper coating is 0.12 μm.Apply thickness
Degree is 0.6mm, then carries out degreasing degreasing processing.
Embodiment 4
The present embodiment and the difference of embodiment 3 are:
Blasting pressure is 0.3MPa.
Spraying conditions include: that the pressure of primary fuel stream is 75psi, and compressed air pressure is 75psi, and nitrogen flow is
35L/min, hydrogen flowing quantity 7L/min, powder feeding rate 30g/min, spray away from be 150mm, workpiece rotation speed be 150rpm,
Spray gun movement speed is 10mm/s.
Corase grinding and fine grinding carry out under conditions of workpiece rotational frequency is 20rpm, polish in the item that workpiece rotational frequency is 400rpm
It is carried out under part.
Embodiment 5
The present embodiment and the difference of embodiment 3 are:
Blasting pressure is 0.5MPa.
Spraying conditions include: that the pressure of primary fuel stream is 95psi, and compressed air pressure is 95psi, and nitrogen flow is
50L/min, hydrogen flowing quantity 12L/min, powder feeding rate 60g/min, spray away from be 250mm, workpiece rotation speed be 300rpm,
Spray gun movement speed is 30mm/s.
Corase grinding and fine grinding carry out under conditions of workpiece rotational frequency is 50rpm, polish in the item that workpiece rotational frequency is 800rpm
It is carried out under part.
Test example 1
By taking embodiment 1 as an example, to iron oxide yellow copper powders used in embodiment 1 and prepare that resulting hydraulic actuator is resistance to be worn away
The iron oxide yellow copper coating that rubs carries out Analysis of components, and result is as shown in Figure 1, the phase composition of spraying front and back material is all solid for Cu-Zn
Solution, but the more former iron oxide yellow copper powders of diffraction maximum of resulting coating are significantly broadened after spraying, and illustrate the crystal grain of coating after spraying
There is refinement trend.
Prepared by resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating to embodiment 1 and carries out Cross Section Morphology analysis, knot
Fruit is as shown in Fig. 2, iron brass coating cross sections are uniform, compact structure, and porosity is low.
Prepared by resulting hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating to embodiment 1 and carries out friction-wear test, and is seen
The pattern that it has after testing is examined, result is as shown in figure 3, the wear-resisting property of iron oxide yellow copper coating is good.
Test example 2
By taking embodiment 1-3 as an example, comparative example is arranged: comparative example is the difference from embodiment 1 is that material is as cast condition iron brass.
The bond strength that ASTM C633 testing coating is pressed to resulting each coating and as cast condition iron brass, is tested by ASTM E2109 and is applied
The porosity of layer is pressed by the oxygen content of GB/T4698.7-2011 measurement coating by the microhardness of ASTM E384 testing coating
The friction and wear behavior of ASTM G98-2002 testing coating, wherein load is 100N, speed 60rpm, time 120min, opposite grinding
Material 30CrMnSiA is lubricated using 10# aeroengine oil.Test result is as shown in table 1:
1 coating performance characterization result of table
As can be seen from Table 1, bond strength > 50MPa of iron oxide yellow copper coating and matrix provided in an embodiment of the present invention, hole
Rate < 1%, oxygen content < 0.5%, hardness 200-250HV0.3, show that the coating of preparation is well combined with matrix, even tissue
Densification, oxygen content is low, and hardness is moderate.By being compared with comparative example 1, although iron oxide yellow copper coating and as cast condition iron brass are in fretting wear
To friction pair almost without abrasion in experiment, but iron oxide yellow copper coating Wear track depth, width and abrasion loss are all significantly lower than as cast condition
Iron brass illustrates there is excellent wear resistant friction reducing performance using the iron oxide yellow copper coating of air-breathing supersonic flame spraying.
In conclusion the preparation method for the hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating that present pre-ferred embodiments provide
Simple and reliable, preparation efficiency is high, and production cost is low, and environmental pollution is small.Thus obtained hydraulic actuator wear resistant friction reducing iron oxide yellow
Copper coating bond strength with higher, even tissue is fine and close, and hardness is moderate, and wear resistant friction reducing is had excellent performance.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating, which comprises the following steps: use
Air-breathing supersonic flame spraying method sprays iron oxide yellow copper powders in hydraulic actuator matrix surface, and spraying process is using compression
The temperature of described matrix is cooled to not higher than 180 DEG C by air, is ground and is polished after the completion of spraying.
2. preparation method according to claim 1, which is characterized in that spraying conditions include: that the pressure of primary fuel stream is
75-95psi and/or compressed air pressure are 75-95psi and/or nitrogen flow is 35-50L/min and/or hydrogen flowing quantity
It is 30-60g/min for 7-12L/min and/or powder feeding rate, and/or spray is away from for 150-250mm and/or workpiece rotation speed
It is 10-30mm/s for 150-300rpm and/or spray gun movement speed；The primary fuel stream includes propane or propylene.
3. preparation method according to claim 1, which is characterized in that the iron oxide yellow copper powders are using aerosolization method system
Standby spherical powder；
Preferably, the granularity of the iron oxide yellow copper powders is -60+15 μm.
4. preparation method according to claim 1, which is characterized in that before spraying the iron oxide yellow copper powders, to described matrix
Carry out oil removing, sandblasting and the pre-heat treatment.
5. preparation method according to claim 1, which is characterized in that grinding includes corase grinding and fine grinding, and corase grinding is to use 46-
60# black silicon carbide grinding wheel carries out under conditions of workpiece rotational frequency is 20-50rpm, and fine grinding is existed with 80-120# black silicon carbide grinding wheel
Workpiece rotational frequency carries out under conditions of being 20-50rpm.
6. preparation method according to claim 1, which is characterized in that the roughness Ra of coating surface is 0.5- after grinding
0.8μm。
7. preparation method according to claim 1, which is characterized in that it is 400-800rpm that polishing, which includes: in workpiece rotational frequency,
Under conditions of, successively handled using 60,30 and 15 μm of diamond polishing band.
8. preparation method according to claim 1, which is characterized in that the roughness Ra of coating surface is not higher than after polishing
0.2μm。
9. a kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating, which is characterized in that the hydraulic actuator wear resistant friction reducing iron oxide yellow
Copper coating is prepared by the described in any item preparation methods of claim 1-8.
10. hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating according to claim 9, which is characterized in that the hydraulic work
The oxygen content of dynamic cylinder wear resistant friction reducing iron oxide yellow copper coating is less than 0.5% or the hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating
Porosity is less than 1% or the hardness of the hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating is 200-250HV0.3Or the liquid
The bond strength of pressurized strut wear resistant friction reducing iron oxide yellow copper coating and matrix is pressed to be greater than 50MPa.
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| CN201811188637.2A CN109023211A (en) | 2018-10-12 | 2018-10-12 | A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and preparation method thereof |
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| CN201811188637.2A CN109023211A (en) | 2018-10-12 | 2018-10-12 | A kind of hydraulic actuator wear resistant friction reducing iron oxide yellow copper coating and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952060A (en) * | 2019-12-19 | 2020-04-03 | 广东省新材料研究所 | Surface treatment method and coating for power transmission shaft of speed reducer |
| CN111304645A (en) * | 2020-04-02 | 2020-06-19 | 季华实验室 | Preparation method of tin brass-carbon steel composite material and tin brass-carbon steel composite material |
| CN111996524A (en) * | 2020-07-21 | 2020-11-27 | 国营芜湖机械厂 | Method for repairing damage of wear-resistant layer of aluminum alloy piston rod of airplane hydraulic system |
| DE102020000594A1 (en) | 2020-01-30 | 2021-08-05 | Daimler Ag | Thermally applied coating |
| CN114799068A (en) * | 2022-05-11 | 2022-07-29 | 宁波大学 | Sand casting mold and manufacturing equipment and manufacturing method thereof |
| CN115537708A (en) * | 2022-09-21 | 2022-12-30 | 中国航发北京航空材料研究院 | Porous anti-friction coating with high surface finish, preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203586916U (en) * | 2013-10-28 | 2014-05-07 | 天津市环亚船用热交换器有限公司 | Anti-corrosive pipe plate for shell-and-tube type heat exchanger |
| CN104551333A (en) * | 2013-10-28 | 2015-04-29 | 天津市环亚船用热交换器有限公司 | Processing technique for anticorrosion pipe plate of tube shell type heat exchanger |
-
2018
- 2018-10-12 CN CN201811188637.2A patent/CN109023211A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203586916U (en) * | 2013-10-28 | 2014-05-07 | 天津市环亚船用热交换器有限公司 | Anti-corrosive pipe plate for shell-and-tube type heat exchanger |
| CN104551333A (en) * | 2013-10-28 | 2015-04-29 | 天津市环亚船用热交换器有限公司 | Processing technique for anticorrosion pipe plate of tube shell type heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 邓畅光等: ""钢基体表面空气助燃超音速火焰喷涂制备铁黄铜涂层的组织和性能"", 《机械工程材料》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952060A (en) * | 2019-12-19 | 2020-04-03 | 广东省新材料研究所 | Surface treatment method and coating for power transmission shaft of speed reducer |
| DE102020000594A1 (en) | 2020-01-30 | 2021-08-05 | Daimler Ag | Thermally applied coating |
| CN111304645A (en) * | 2020-04-02 | 2020-06-19 | 季华实验室 | Preparation method of tin brass-carbon steel composite material and tin brass-carbon steel composite material |
| CN111304645B (en) * | 2020-04-02 | 2022-03-25 | 季华实验室 | Preparation method of tin brass-carbon steel composite material and tin brass-carbon steel composite material |
| CN111996524A (en) * | 2020-07-21 | 2020-11-27 | 国营芜湖机械厂 | Method for repairing damage of wear-resistant layer of aluminum alloy piston rod of airplane hydraulic system |
| CN114799068A (en) * | 2022-05-11 | 2022-07-29 | 宁波大学 | Sand casting mold and manufacturing equipment and manufacturing method thereof |
| CN114799068B (en) * | 2022-05-11 | 2024-05-10 | 宁波大学 | Sand casting mold and manufacturing equipment and manufacturing method thereof |
| CN115537708A (en) * | 2022-09-21 | 2022-12-30 | 中国航发北京航空材料研究院 | Porous anti-friction coating with high surface finish, preparation method and application thereof |
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Application publication date: 20181218 |