CN109139705A - A kind of bearing inner race and its preparation process and self-lubricating knuckle bearing - Google Patents
A kind of bearing inner race and its preparation process and self-lubricating knuckle bearing Download PDFInfo
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- CN109139705A CN109139705A CN201811288655.8A CN201811288655A CN109139705A CN 109139705 A CN109139705 A CN 109139705A CN 201811288655 A CN201811288655 A CN 201811288655A CN 109139705 A CN109139705 A CN 109139705A
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- inner race
- bearing inner
- bearing
- nitriding
- layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
- C23C8/38—Treatment of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The present invention relates to a kind of bearing inner race and its preparation process and self-lubricating knuckle bearings, belong to oscillating bearing technical field.A kind of bearing inner race includes bearing inner race matrix and film plating layer, and bearing inner race matrix surface has the nitriding layer by Nitrizing Treatment, and film plating layer is set to nitriding layer surface.The nitriding layer of bearing inner race matrix surface can effectively improve the surface hardness of bearing inner race matrix surface, the film plating layer of nitriding layer surface further increases the surface hardness and wearability on bearing inner race surface, the coefficient of friction on bearing inner race surface is reduced, the anti-liner for improving bearing inner race surface scrapes ability.The preparation process of bearing inner race includes preparing nitriding layer in bearing inner race matrix surface using vacuum plasma nitriding process, then prepare film plating layer in nitriding layer surface using physical vapor deposition.A kind of self-lubricating bearing, bearing inner race and selflubricating liner form friction pair, mitigate the rate of wear of liner, improve the service life of oscillating bearing.
Description
Technical field
The present invention relates to oscillating bearing technical fields, in particular to a kind of bearing inner race and its preparation process and certainly
Lubricating joint bearing.
Background technique
Oscillating bearing is a kind of spherical bearing, and sliding contact surface is an Internal Spherical Surface and a spherical outside surface, fortune
It can be in any angle rotary oscillation, at a variety of special process such as it uses alramenting, cracks, squeezes, inlaying pad, spraying when dynamic
Reason method is made.The spies such as oscillating bearing has load-carrying ability big, shock resistance, and anticorrosive, wear-resistant, Self-aligning, lubrication are good
Point.
In many impact operating conditions, such as undercarriage position, the lasso of oscillating bearing needs impact-resistant requirement, because
This requires lasso surface hardness cannot be too high and has preferable endurance impact property.But in existing self-lubricating knuckle bearing
Circle usually selects stainless steel, and surface hardness is usually 45HRC or so, and antiwear property is weaker in use, spherical surface easily quilt
Wear-out failure causes service life insufficient to can accelerate the rate of wear of selflubricating liner.
Summary of the invention
The first object of the present invention is to provide a kind of bearing inner race, is used for oscillating bearing, improves the surface of bearing inner race
Hardness and wearability reduce coefficient of friction.
The second object of the present invention is to provide a kind of preparation process of bearing inner race, by carrying out nitriding to bearing inner race
Processing and physical vapour deposition (PVD) process improve bearing inner race surface hardness.
The third object of the present invention is to provide a kind of self-lubricating knuckle bearing, this oscillating bearing wearability is good, in bearing
Coefficient of friction between circle and selflubricating liner is low.
The embodiment of the present invention is achieved in that
A kind of bearing inner race comprising bearing inner race matrix and film plating layer, bearing inner race matrix surface, which has, passes through nitriding
The nitriding layer of processing, film plating layer are set to nitriding layer surface；
Surface hardness >=1500HV of bearing inner race.
Further, the material of bearing inner race matrix is PH13-8Mo stainless steel.
Further, nitriding layer with a thickness of 100~200 μm.
Further, film plating layer is titanium carbonitride coating or diamond-like coating.
A kind of preparation process of bearing inner race comprising using vacuum plasma nitriding process in bearing inner race matrix surface system
Standby nitriding layer, then film plating layer is prepared in nitriding layer surface using physical vaporous deposition.
Further, physical gas-phase deposite method includes vacuum magnetic-control sputtering method.
Further, bearing inner race is after vacuum plasma nitriding process prepares nitriding layer, surface hardness >=950HV, axis
Inner ring is held after physical vaporous deposition prepares film plating layer, surface hardness >=1500HV.
A kind of self-lubricating knuckle bearing comprising bearing outer ring, selflubricating liner and such as above-mentioned bearing inner race, in bearing
Snare is set to the inside of bearing outer ring, and selflubricating liner is set to the inner wall of bearing outer ring, and forms a pair with bearing inner race
Friction is secondary.
Further, selflubricating liner is adhered to the inner wall of bearing outer ring.
Further, selflubricating liner is polytetrafluoroethylene (PTFE) fabric liner or molding liner.
The beneficial effect of the embodiment of the present invention is:
A kind of bearing inner race provided by the invention is used for oscillating bearing.The nitriding layer of bearing inner race matrix surface can have
Effect improves the surface hardness of bearing inner race matrix surface, and the film plating layer of nitriding layer surface can further increase bearing inner race surface
Surface hardness and wearability, so that its surface hardness is reached 1500HV or more, reduce the coefficient of friction on bearing inner race surface, significantly
The anti-liner for improving bearing inner race surface scrapes ability.
The preparation process of a kind of bearing inner race provided by the invention, by using empty plasma nitriding method in bearing inner race base
Body surface wheat flour improves the surface hardness of bearing inner race matrix surface for nitriding layer；Exist again by using physical vaporous deposition
Nitriding layer surface prepares film plating layer, and the surface hardness and wearability on bearing inner race surface further increase, and reaches its surface hardness
To 1500HV or more.The preparation process of aluminium alloy oscillating bearing provided by the invention is simple.
A kind of self-lubricating bearing provided by the invention, using the higher bearing inner race of surface hardness.Bearing inner race and Zi Run
Sliding liner forms friction pair, can reduce the rate of wear of liner, improves the service life of oscillating bearing.
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 the structural schematic diagram of bearing inner race provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the only bearing inner race of nitriding layer provided in an embodiment of the present invention；
Fig. 3 is the partial structural diagram of bearing inner race provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of oscillating bearing provided in an embodiment of the present invention.
Icon: 100- bearing inner race；110- bearing inner race matrix；120- nitriding layer；130- film plating layer；Outside 200- bearing
Circle；300- selflubricating liner.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " first ", " second " " third " etc. are only used for distinguishing and retouch
It states, is not understood to indicate or imply relative importance.
The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" is based on shown in attached drawing
Orientation or positional relationship or the invention product using when the orientation or positional relationship usually put, be merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, the terms such as " vertical " are not offered as requiring absolute upright between component, but can be slightly tilted.As " hung down
Directly " only refer to that its direction is in contrast more vertical, be not indicate the structure have to it is completely vertical, but can be slightly
Inclination.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " etc. shall be understood in a broad sense.For example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
Referring to Fig. 1, the present invention provides a kind of bearing inner race 100 comprising bearing inner race matrix 110,120 and of nitriding layer
Film plating layer 130.
The material of bearing inner race matrix 110 is PH13-8Mo stainless steel, and PH13-8Mo stainless steel is U.S.'s precipitation hardenable
Stainless steel, using the high strength martensitic precipitation-hardening stainless steel of double vacuum metlings.PH13-8Mo stainless steel has excellent break
Toughness, good horizontal mechanical performance and the anticorrosion stress-resistant performance in marine environment are split, aerospace, nuclear reaction are widely used in
The fields such as heap and petrochemical industry.
Referring to Fig. 2, nitriding layer 120 is to be obtained by 110 surface of bearing inner race matrix by Nitrizing Treatment.Nitrizing Treatment
It is the chemical heat treatment process for making in certain medium nitrogen-atoms penetrate into workpiece surface at a certain temperature.Penetrate into one side of nitrogen in steel
Face from outward appearance to inner essence forms the nitrided iron of different nitrogen contents from iron, and various alloy nitrogen are on the one hand formed in conjunction with the alloying element in steel
Compound, especially aluminium nitride, chromium nitride.These nitride have very high surface hardness, thermal stability and the very high spread,
Steel part after nitriding can thus be made obtains high surface hardness, wearability, fatigue strength, seizure resistance, anti-atmosphere and overheat and steams
Vapour corrosive power, anti-temper softening ability, and reduce notch sensitivity.Nitriding there are many method, the most commonly used is gas nitriding and
Glow discharge nitriding.
Further, the present invention is handled 110 surface of bearing inner race matrix using ion-nitridation method, obtained nitriding
Layer 120 greatly improves the surface hardness and wearability on 100 surface of bearing inner race.
Further, nitriding layer 120 with a thickness of 100~200 μm.It is hard by 100 surface of bearing inner race of Nitrizing Treatment
Degree >=950HV, Ra≤0.08 of the Internal Spherical Surface of bearing inner race 100.
Please refer to Fig. 1 and Fig. 3, film plating layer 130 is 120 surface of nitriding layer by obtaining by Nitrizing Treatment using physics
Vapour deposition process handles to obtain.Physical vapour deposition (PVD) is under vacuum conditions, using the method for physics by material source --- solid
Or liquid surface is gasificated into gaseous atom, molecule or partial ionization into ion, and passes through low-pressure gas (or plasma) process,
There is the technology of the film of certain specific function in matrix surface deposition.In addition to traditional vacuum evaporation and sputter-deposition technology,
It further include vacuum evaporation, sputtering plating, ion plating etc..
Further, the present invention using vacuum magnetic-control sputtering method to 120 surface of nitriding layer of bearing inner race 100 at
Reason, obtained film plating layer 130 further increase the surface hardness and wearability on 100 surface of bearing inner race, reduce bearing inner race 100
The coefficient of friction on surface, the anti-liner for significantly improving 100 surface of bearing inner race scrape ability.
Further, film plating layer 130 is titanium carbonitride coating or diamond-like coating.By physical vapour deposition (PVD) process
100 surface hardnesses of bearing inner race >=1500HV.
The present invention provides a kind of preparation process of bearing inner race 100 comprising prepares nitriding layer 120 and prepares film plating layer
130:
1. preparing nitriding layer 120
The nitriding layer of 100~200 μ m thicks is prepared on 110 surface of bearing inner race matrix using vacuum plasma nitriding process
120.The nitriding layer 120 of grinding and polishing bearing inner race 100, makes Ra≤0.08 of its Internal Spherical Surface.Made by the techniques such as grinding, polishing
Inner ring size and surface roughness are met the requirements.
2. preparing film plating layer 130
Film plating layer 130 is prepared on 120 surface of nitriding layer using vacuum magnetic-control sputtering method.
Referring to Fig. 4, the present invention also provides a kind of self-lubricating knuckle bearings comprising bearing outer ring 200, selflubricating liner
300 and such as above-mentioned bearing inner race 100, bearing inner race 100 is sheathed on the inside of bearing outer ring 200, and selflubricating liner 300 is bonded
Friction pair is formed in the inner wall of bearing outer ring 200, and with bearing inner race 100.
Selflubricating liner 300 has lower coefficient of friction and preferable antiwear characteristic, since its softness is good, institute
Can be used as the isolation film of metal Yu metal opposite grinding, gapless, noiseless, oil-free lubrication, service free, free of contamination reason are realized
Think purpose.
Coefficient of friction between bearing inner race 100 and selflubricating liner 300 with nitriding layer 120 and film plating layer 130 compared with
It is small, to guarantee that spherical surface is in smooth state always, reduces the rate of wear of selflubricating liner 300, finally extend joint shaft
The service life held.
Further, selflubricating liner 300 is polytetrafluoroethylene (PTFE) fabric liner or molding liner.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
1. preparing nitriding layer 120
The nitriding layer 120 of 150 μ m thicks is prepared on 110 surface of bearing inner race matrix using vacuum plasma nitriding process.It grinds
The nitriding layer 120 of grinding and polishing light bearing inner race 100.
2. preparing film plating layer 130
Titanium carbonitride coating is prepared on 120 surface of nitriding layer using vacuum magnetic-control sputtering method.
Bearing outer ring 200, bearing inner race 100 and polytetrafluoroethylene (PTFE) fabric liner are assembled into oscillating bearing.
Embodiment 2
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
1. preparing nitriding layer 120
The nitriding layer 120 of 100 μ m thicks is prepared on 110 surface of bearing inner race matrix using vacuum plasma nitriding process.It grinds
The nitriding layer 120 of grinding and polishing light bearing inner race 100.
2. preparing film plating layer 130
Titanium carbonitride coating is prepared on 120 surface of nitriding layer using vacuum magnetic-control sputtering method.
Bearing outer ring 200, bearing inner race 100 and polytetrafluoroethylene (PTFE) fabric liner are assembled into oscillating bearing.
Embodiment 3
Embodiment 1
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
1. preparing nitriding layer 120
The nitriding layer 120 of 200 μ m thicks is prepared on 110 surface of bearing inner race matrix using vacuum plasma nitriding process.It grinds
The nitriding layer 120 of grinding and polishing light bearing inner race 100.
2. preparing film plating layer 130
Using vacuum magnetic-control sputtering method in 120 preparing diamond-like coating on surface of nitriding layer.
Bearing outer ring 200, bearing inner race 100 and molding liner are assembled into oscillating bearing.
Comparative example 1
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
Bearing outer ring 200, bearing inner race 100 and polytetrafluoroethylene (PTFE) fabric liner are assembled into oscillating bearing.
Comparative example 2
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
1. preparing nitriding layer 120
The nitriding layer 120 of 150 μ m thicks is prepared on 110 surface of bearing inner race matrix using vacuum plasma nitriding process.It grinds
The nitriding layer 120 of grinding and polishing light bearing inner race 100.
Bearing outer ring 200, bearing inner race 100 and polytetrafluoroethylene (PTFE) fabric liner are assembled into oscillating bearing.
Comparative example 3
The embodiment of the present invention provides a kind of bearing inner race 100 and its preparation process and self-lubricating knuckle bearing.
1. preparing film plating layer 130
Titanium carbonitride coating is prepared on 110 surface of bearing inner race matrix using vacuum magnetic-control sputtering method.
Bearing outer ring 200, bearing inner race 100 and polytetrafluoroethylene (PTFE) fabric liner are assembled into oscillating bearing.
It is hard that self-lubricating knuckle bearing made from difference Example 1~3 and comparative example 1~3 carries out 100 surface of bearing inner race
Degree test and wearability test, as shown in table 1:
The test of 1 bearing inner race of table, 100 surface hardness and wearability test
It can be obtained by Examples 1 to 3 and the comparison of comparative example 1, by the bearing of nitriding and physical vapour deposition (PVD) Duplex treatment
The surface hardness of circle 100 can be increased to 1500HV or more from 440HV, and the surface hardness of bearing inner race 100 is greatly improved,
The coefficient of friction for reducing by 100 surface of bearing inner race, the anti-liner for significantly improving 100 surface of bearing inner race scrape ability, while resistance to
Mill property improves.It can be obtained by Examples 1 to 3 and the comparison of comparative example 2,3, individually by nitriding or the bearing of physical vapour deposition (PVD) process
The surface hardness of inner ring 100 can only be increased to 950HV or so from 440HV, and effect does not have nitriding and the dual place of physical vapour deposition (PVD)
That manages is good.
In conclusion a kind of bearing inner race 100 provided in an embodiment of the present invention, is used for oscillating bearing.Bearing inner race matrix
110 surfaces form nitriding layer 120 by Nitrizing Treatment, can effectively improve the surface hardness on 110 surface of bearing inner race matrix, seep
The film plating layer 130 on 120 surface of nitrogen layer can further increase the surface hardness and wearability on 100 surface of bearing inner race, nitriding layer
120 and the interaction of film plating layer 130 100 surface hardness of bearing inner race can be made to reach 1500HV or more, reduce bearing inner race
The coefficient of friction on 100 surfaces, the anti-liner for improving 100 surface of bearing inner race scrape ability.
A kind of preparation process of bearing inner race 100 provided in an embodiment of the present invention exists by using empty plasma nitriding method
110 surface of bearing inner race matrix prepares nitriding layer 120, improves the surface hardness on 110 surface of bearing inner race matrix, by grinding
After the techniques such as mill, polishing meet the requirements inner ring size and surface roughness, then by using physical vaporous deposition in nitriding
120 surface of layer prepare film plating layer 130, and the surface hardness and wearability on 100 surface of bearing inner race further increase.
A kind of self-lubricating bearing provided in an embodiment of the present invention, the bearing inner race with nitriding layer 120 and film plating layer 130
Coefficient of friction between 100 and selflubricating liner 300 is smaller, to guarantee that spherical surface is in smooth state always, reduces from profit
The rate of wear of sliding liner 300, the final service life for extending oscillating bearing.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of bearing inner race, which is characterized in that the bearing inner race includes bearing inner race matrix and film plating layer, in the bearing
Cycle basis body surface face has the nitriding layer by Nitrizing Treatment, and the film plating layer is set to the nitriding layer surface；
Surface hardness >=1500HV of the bearing inner race.
2. bearing inner race according to claim 1, which is characterized in that the material of the bearing inner race matrix is PH13-8Mo
Stainless steel.
3. bearing inner race according to claim 1, which is characterized in that the nitriding layer with a thickness of 100~200 μm.
4. bearing inner race according to claim 1, which is characterized in that the film plating layer is titanium carbonitride coating or diamond-like
Stone coating.
5. a kind of prepare the preparation process such as the described in any item bearing inner races of Claims 1 to 4, which is characterized in that the axis
The preparation method for holding inner ring includes preparing the nitriding layer in the bearing inner race matrix surface using vacuum plasma nitriding process,
The film plating layer is prepared in the nitriding layer surface using physical vaporous deposition again.
6. the preparation process of bearing inner race according to claim 5, which is characterized in that the physical gas-phase deposite method packet
Include vacuum magnetic-control sputtering method.
7. the preparation process of bearing inner race according to claim 5, which is characterized in that the bearing inner race is by described true
After empty plasma nitriding method prepares the nitriding layer, surface hardness >=950HV, the bearing inner race sinks by the physical vapor
After area method prepares the film plating layer, surface hardness >=1500HV.
8. a kind of self-lubricating knuckle bearing, which is characterized in that the self-lubricating knuckle bearing includes bearing outer ring, selflubricating liner
And such as the described in any item bearing inner races of Claims 1 to 4, the bearing inner race are sheathed on the inside of the bearing outer ring, institute
The inner wall that selflubricating liner is set to the bearing outer ring is stated, and forms friction pair with the bearing inner race.
9. self-lubricating knuckle bearing according to claim 8, which is characterized in that the selflubricating liner is adhered to the axis
The inner wall of bearing outer-ring.
10. self-lubricating knuckle bearing according to claim 8, which is characterized in that the selflubricating liner is polytetrafluoroethyl-ne
Alkene fabric liner or molding liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288655.8A CN109139705A (en) | 2018-10-31 | 2018-10-31 | A kind of bearing inner race and its preparation process and self-lubricating knuckle bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288655.8A CN109139705A (en) | 2018-10-31 | 2018-10-31 | A kind of bearing inner race and its preparation process and self-lubricating knuckle bearing |
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| CN109139705A true CN109139705A (en) | 2019-01-04 |
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| CN201811288655.8A Pending CN109139705A (en) | 2018-10-31 | 2018-10-31 | A kind of bearing inner race and its preparation process and self-lubricating knuckle bearing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021008133A1 (en) * | 2019-07-17 | 2021-01-21 | 浙江中达精密部件股份有限公司 | Metal sliding member and preparation method therefor |
| CN112553584A (en) * | 2020-11-04 | 2021-03-26 | 河北汉光重工有限责任公司 | Method for depositing diamond-like carbon film on outer surface of inner ring of knuckle bearing |
| CN112709759A (en) * | 2019-10-24 | 2021-04-27 | 斯凯孚公司 | Sliding bearing and method for manufacturing the same |
| EP4184027A1 (en) * | 2021-11-17 | 2023-05-24 | Schaublin SA | Self-lubricating bearing |
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| EP4184027A1 (en) * | 2021-11-17 | 2023-05-24 | Schaublin SA | Self-lubricating bearing |
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