CN110259831A - Bearing, bearing race and preparation method thereof - Google Patents
Bearing, bearing race and preparation method thereof Download PDFInfo
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- CN110259831A CN110259831A CN201910579465.XA CN201910579465A CN110259831A CN 110259831 A CN110259831 A CN 110259831A CN 201910579465 A CN201910579465 A CN 201910579465A CN 110259831 A CN110259831 A CN 110259831A
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- Prior art keywords
- bearing race
- bearing
- raceway
- corrosion
- matrix
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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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
-
- 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
- F16C33/64—Special methods of manufacture
Abstract
A kind of bearing, bearing race and preparation method thereof, the preparation method of bearing race include: to provide bearing race matrix；Cladding is carried out to face where the raceway of bearing race matrix, anti-corrosion layer is formed, obtains corrosion resisting bearing circle.Cladding is carried out to face where the raceway of bearing race matrix by using melting and coating process, consistency height and the anti-corrosion layer with the matrix metallurgical bonding of bearing race is formed, there is good wear-corrosion resistance.Further, since face carries out cladding where the raceway only to bearing race matrix, remaining region of bearing race matrix can use common bearing material, it avoids and processes entire bearing race matrix using corrosion-resistant raw material, the corrosion-resistant raw material of consumption are less, low energy consumption for production process, to reduce production cost.
Description
Technical field
The present embodiments relate to technical field of bearings more particularly to a kind of bearing, bearing race and preparation method thereof.
Background technique
Under some special operating conditions, bearing needs work under the medium for having corrosiveness, such as seawater, refrigerant etc.,
These media have strong corrosivity, and common bearing material is very low in the service life of such medium lower bearing.
High nitrogen martensitic stain less steel, high carbon and chromium martensitic stainless steel such as 9Cr18 etc. are used as bearing material, have centainly
Corrosion resistance, but under the working media as seawater, the chloride ion of seawater will destroy the chromium oxide passivation film of bearing surface,
Therefore under Seawater, the bearing service life of stainless steel is also very low.Nickel-base alloy has good corrosion resistance, wherein titaniferous
40% Nitinol has very good mechanical performance and corrosion resistance, has very good effect applied to bearing.
However, being usually to prepare bearing inner race and bearing outer ring using powder metallurgical technique and the method for molding, can consume
A large amount of expensive Nitinol powder, cause increased costs.
Therefore, the technical issues of corrosion resistant bearing is to reduce cost, become urgent need to resolve how is prepared.
Summary of the invention
The technical issues of embodiment of the present invention solves is to prepare corrosion resistant bearing to reduce cost.
To solve the above problems, the embodiment of the present invention provides a kind of preparation method of bearing race, comprising:
Bearing race matrix is provided；
Cladding is carried out to face where the raceway of bearing race matrix, anti-corrosion layer is formed, obtains corrosion resisting bearing circle.
Optionally, face where the raceway of the bearing race matrix offers raceway annular groove；
The step of face where the raceway to bearing race matrix carries out cladding, forms anti-corrosion layer, comprising:
Cladding is carried out to the raceway annular groove, forms anti-corrosion layer on the raceway annular groove.
Optionally, face where the raceway to bearing race matrix carries out cladding, forms anti-corrosion layer, obtains corrosion resistant
The step of bearing race, comprising:
Cladding is carried out to face where the raceway of bearing race matrix, forms anti-corrosion layer；
The anti-corrosion layer is ground, the corrosion resisting bearing circle being ground.
Optionally, after described the step of carrying out cladding to face where the raceway of bearing race matrix, forming anti-corrosion layer,
The anti-corrosion layer is ground described, the step of the corrosion resisting bearing circle being ground before, further includes:
Surface heat rolling is carried out to the anti-corrosion layer, obtains heat rolling bearing race；
Described to be ground to the anti-corrosion layer, the step of corrosion resisting bearing circle being ground, includes:
The anti-corrosion layer of the heat rolling bearing race is ground, the corrosion resisting bearing circle being ground.
Optionally, after described the step of carrying out cladding to face where the raceway of bearing race matrix, forming anti-corrosion layer,
It is described that the anti-corrosion layer is ground, the step of the corrosion resisting bearing circle being ground before, further includes:
The anti-corrosion layer is heat-treated, heat treatment bearing race is obtained；
Described to be ground to the anti-corrosion layer, the step of corrosion resisting bearing circle being ground, includes:
The anti-corrosion layer of the heat treatment bearing race is ground, the corrosion resisting bearing circle being ground.
Optionally, face progress cladding includes: where the raceway to bearing race matrix
Cladding is carried out to face where the raceway of bearing race matrix using Nitinol powder.
Optionally, the granular size range of the Nitinol powder is 75 μm -150 μm.
Optionally, the depth of the raceway annular groove is greater than or equal to the rolling element diameter of bearing applied by bearing race
5%.
To solve the above problems, the embodiment of the present invention provides a kind of bearing race, processed by above-mentioned preparation method.
Optionally, the bearing race includes bearing inner race and bearing outer ring.
To solve the above problems, the embodiment of the present invention provides a kind of bearing, including above-mentioned bearing race.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantage that
The preparation method of bearing race provided by the embodiment of the present invention, comprising: bearing race matrix is provided；To bearing race matrix
Raceway where face carry out cladding, formed anti-corrosion layer, obtain corrosion resisting bearing circle.Bearing provided by the embodiment of the present invention
Circle, during the work time, the roller surface of only bearing race contacted with rolling element bear fatigue stress and are then easy to corrode, and axis
Other regions for holding circle are not easy to corrode because being not subject to load, because face where the raceway of bearing race matrix includes roller surface, lead to
It crosses and cladding is carried out to face where the raceway of bearing race matrix using melting and coating process, form consistency height and the matrix smelting with bearing race
Gold combine anti-corrosion layer, due to the bearing race matrix after cladding raceway where face region be directly exposed in air it is naturally cold
But, the cooled and solidified speed of the anti-corrosion layer after cladding is fast, and the tissue of the corrosion resistant bearing race of preparation is fine and closely woven, has good
Wear-corrosion resistance, further, since only face where raceway to bearing race matrix carries out cladding, bearing race matrix its
Remaining region can use common bearing material, avoid and process entire bearing race matrix using corrosion-resistant raw material, consumption
Corrosion-resistant raw material are less, and low energy consumption for production process, to reduce production cost, and since the bearing race matrix to cladding can
To be processed in advance by traditional bearing race manufacturing process, face where the raceway of bearing race is melted using cladding method again later
Coated with anti-corrosion layer is obtained, the tooling using compacting tool set etc is avoided, further reduced being produced into for single-piece bearing race
This.
In optinal plan, face where the raceway of the bearing race matrix offers raceway annular groove；It is described to bearing race
The step of face carries out cladding where the raceway of matrix, forms anti-corrosion layer, comprising: cladding is carried out to the raceway annular groove,
Anti-corrosion layer is formed on the raceway annular groove.Because the roller surface only contacted with rolling element in bearing race bears fatigue
Stress, by opening up raceway annular groove in face where the raceway of bearing race matrix, it is only necessary to be melted to raceway annular groove
Coated with corrosion resistant roller surface is formed, the consumption of corrosion-resistant raw material further reduced, in the premise for guaranteeing corrosion resistance
Under further reduce costs.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of the preparation method of bearing race provided by the embodiment of the present invention；
Fig. 2 is the preparation process schematic diagram of bearing provided by the embodiment of the present invention；
Fig. 3 is the optional flow chart of the preparation method of bearing race provided by the embodiment of the present invention；
Fig. 4 is another optional flow chart of the preparation method of bearing race provided by the embodiment of the present invention.
Wherein: 10- inner ring；Face where 100- raceway；20- powder jet；30- laser beam；40- powder stream.
Specific embodiment
It can be seen from background technology that a kind of preparation cost of bearing is higher.The higher original of preparation cost of bearing is analyzed below
Cause.
Powder metallurgical technique is used first, first prepares Nitinol powder, then uses mold compression moulding, life after molding
Embryo is sintered (hot isostatic pressing) at high temperature under high pressure to reach metallurgical bonding and densification.
A large amount of Nitinol powder can be consumed with the method for powder metallurgy because in bearing internal external circle only and rolling element
The roller surface of contact bears fatigue stress, and its maximum rolls the position that stress is only located at 1-2% rolling element diameter under roller surface,
So preparing the bearing internal external circle that entirety is all niti material with powder metallurgy, it is the significant wastage to expensive raw material, increases
The production cost of bearing race is added；Even small lot produces, forming process also has to use mold in powder metallurgy process,
Therefore piece-production cost is increased；Hot isostatic pressing is high-temperature high-pressure craft, and not only equipment is expensive, and technical process energy consumption
Greatly, cost is further increased.
In order to reduce the cost of bearing, the embodiment of the invention provides a kind of preparation methods of bearing, comprising: includes: to mention
For bearing race matrix；Cladding is carried out to face where the raceway of bearing race matrix, anti-corrosion layer is formed, obtains corrosion resisting bearing circle.
Bearing race provided by the embodiment of the present invention, during the work time, the roller surface of only bearing race contacted with rolling element are born
Fatigue stress is then easy to corrode, and other regions of bearing race are not easy to corrode because being not subject to load, because of bearing race matrix
Raceway where face include roller surface, cladding is carried out to face where the raceway of bearing race matrix by using melting and coating process, is formed
Consistency height and the anti-corrosion layer with the matrix metallurgical bonding of bearing race, due to face where the raceway of the bearing race matrix after cladding
Region is directly exposed to natural cooling in air, and the cooled and solidified speed of the anti-corrosion layer after cladding is fast, preparation it is corrosion resistant
The tissue of bearing race is fine and closely woven, has good wear-corrosion resistance, further, by the raceway institute only to bearing race matrix
Cladding is carried out in face, remaining region of bearing race matrix can use common bearing material, avoid using corrosion-resistant former material
Material processes entire bearing race matrix, and the corrosion-resistant raw material of consumption are less, and low energy consumption for production process, are produced into reduce
This, and since the bearing race matrix to cladding can be processed by traditional bearing race manufacturing process in advance, later again using molten
It covers method and cladding is carried out to obtain anti-corrosion layer to face where the raceway of bearing race, avoid the tooling using compacting tool set etc,
It further reduced the production cost of single-piece bearing race.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is 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.
It should be noted that the orientation or positional relationship of instruction involved by this specification is side based on the figure
Position or positional relationship are merely for convenience of description and simplification description, rather than the device of indication or suggestion meaning must have spy
Fixed orientation with specific orientation construction, therefore is not considered as limiting the invention.
Referring to FIG. 1, Fig. 1 is a kind of flow chart of the preparation method of bearing race provided by the embodiment of the present invention.
As shown in Figure 1, the preparation method of bearing race provided by the embodiment of the present invention, comprising:
Step S1: bearing race matrix is provided；
It is that bearing race matrix is processed by traditional bearing race manufacturing process using common iron such as 16MnCr5 first.Add
Work process is to forge raw material, is annealing, is finally being machined out to obtain the bearing race matrix of predetermined size.
Because processing bearing race matrix using traditional bearing race manufacturing process, avoid using molding tooling, saved at
This.
Step S2: cladding is carried out to face where the raceway of bearing race matrix, anti-corrosion layer is formed, obtains corrosion resisting bearing
Circle.
It should be noted that face where the raceway of the bearing race matrix, is illustrated so that bearing race is inner ring as an example, rolls
Face where road is the outer ring surface of inner ring, is illustrated so that bearing race is outer ring as an example, and the inner ring surface of outer ring is raceway place
Face.
It is easily understood that face where raceway includes the raceway area and non-raceway area with rolling element cooperation.
It is illustrated so that bearing race is inner ring as an example, face where raceway is the outer ring surface of inner ring.In the raceway to inner ring
When place face carries out cladding, cladding can be carried out in face where the raceway directly to entire inner ring, so that the outer ring surface of inner ring is whole
Anti-corrosion layer is formed, or cladding is carried out to the raceway area in face where the raceway of inner ring, to form anti-corrosion layer in raceway area.
Similarly, when face where the raceway to outer ring carries out cladding, it can be and cladding directly is carried out to face where the raceway of entire outer ring,
So that the inner ring surface of outer ring is completely formed anti-corrosion layer, the raceway area in face carries out cladding where being also possible to the raceway to outer ring,
To form anti-corrosion layer in raceway area.
Melting and coating process can be laser melting coating or electron beam cladding.
Below using bearing race as inner ring, for laser melting and coating process, the cladding process of bearing race is carried out detailed
Explanation.
Referring to FIG. 2, Fig. 2 is the preparation process schematic diagram of bearing provided by the embodiment of the present invention.As shown in Fig. 2, molten
The process equipment of coating process is mainly by laser generator (not shown), powder feeder (not shown) and 20 groups of powder jet
At.(i.e. inner ring is outer via face 100 where the raceway of optics into focus to inner ring 10 for the laser beam 30 that laser generator generates
Surface), while powder stream 40 is also directed to the raceway place face 100 of inner ring 10 by powder feeder through powder jet 20.After excitation
Laser beam 30 be radiated on powder after over-focusing, make the superficial layer of powder and inner ring matrix while melting, and be quickly cooled down
Consistency height is formed after solidification and with inner ring matrix at the surface covering of metallurgical bonding, to significantly improve the resistance to of face where raceway
Corrosion resistance is ground, namely improves the wear-resisting corrosive nature of inner ring.
Powder stream in powder feeder is then the raw material to form the anti-corrosion layer of bearing race, described to axis in the present embodiment
It includes: to be carried out using Nitinol powder to face where the raceway of bearing race matrix that face where holding the raceway of cycle basis body, which carries out cladding,
Cladding.The raw material of anti-corrosion layer are Nitinol powder, Nitinol hardness with higher, good wear-resisting property and resistance to
Corrosive nature prepares the corrosion-resistant finishes of bearing race by using Nitinol, improves bearing race in corrosion-resistant medium
Service life.
Nitinol can select the nickel of 55-65% and the titanium of 35-45%, in the present embodiment, the raw material of anti-corrosion layer
Select NiTi60 alloy, wherein the content of titanium is that 40%, NiTi60 alloy has preferable wear-corrosion resistance, is made
It can be improved the corrosion resistance of bearing race for the raw material of anti-corrosion layer.
The particle of Nitinol powder cannot it is excessive can not be too small, it is too large or too small to will affect the continuous of powder stream
Mobility, the uniformity of the powder in face reduces where the raceway for falling into bearing race is sprayed from powder jet, leads to institute after cladding
The uniform performance of the anti-corrosion layer of formation declines, and reduces the corrosion resistance of bearing race.Nitinol powder it is small a wide range of
That can be 75 μm -150 μm, in a particular embodiment, the granular size of Nitinol powder can for 100 μm, 80 μm or
120μm。
In order to avoid Nitinol powder forms the impurity such as titanium oxide by high-temperature oxydation in cladding process, cause corrosion-resistant
The corrosion resistance of coating declines, in a kind of specific implementation, can face where the raceway to bearing race the NiTi to cladding
Alloy powder takes inert gas shielding, is passed through the protection gas such as argon gas to cladding region by face where the raceway to bearing race
Body can prevent Nitinol powder from forming the impurity such as titanium oxide by high-temperature oxydation in cladding process, further improve axis
Hold the hardness and wear-corrosion resistance of circle.
In cladding process, laser beam 30 and powder jet 20 can be moved flexibly according to the route programmed in advance simultaneously,
Certainly, bearing race to be processed can be fixed on processing platform or according to Working position movement.
It is easily understood that the thickness of anti-corrosion layer cannot be excessively thin or blocked up, the excessively thin corrosion-resistant finishes that may cause
Uniformity reduces, and the corrosion resistance of bearing race is caused to decline；It is blocked up and excessive Nitinol powder can be consumed, lead to cost
It increases.Therefore, by taking bearing race is inner ring as an example, the outer diameter of inner ring matrix can be first limited before cladding, later again to the raceway of inner ring
Place face carries out cladding, by controlling powder sending quantity, the scanning speed of laser beam and the power of laser generator, obtains required
The thickness of corrosion-resistant finishes finally obtains the inner ring with corrosion-resistant finishes for meeting outer diameter requirement.
Bearing race provided by the embodiment of the present invention, during the work time, the only rolling of bearing race contacted with rolling element
Road face bears fatigue stress and is then easy to corrode, and other regions of bearing race are not easy to corrode because being not subject to load, because of axis
Face where holding the raceway of cycle basis body includes roller surface, is melted by using melting and coating process to face where the raceway of bearing race matrix
It covers, consistency height and the anti-corrosion layer with the matrix metallurgical bonding of bearing race is formed, due to the rolling of the bearing race matrix after cladding
Face region where road is directly exposed to natural cooling in air, and the cooled and solidified speed of the anti-corrosion layer after cladding is fast, preparation
The tissue of corrosion resistant bearing race is fine and closely woven, has good wear-corrosion resistance, further, due to only to bearing race matrix
Raceway where face carry out cladding, remaining region of bearing race matrix can use common bearing material, avoid using resistance to
Corrode raw material and process entire bearing race matrix, the corrosion-resistant raw material of consumption are less, and low energy consumption for production process, to reduce
Production cost, and since the bearing race matrix to cladding can be processed by traditional bearing race manufacturing process in advance, Zhi Houzai
It uses cladding method to carry out cladding to face where the raceway of bearing race to obtain anti-corrosion layer, avoids using compacting tool set etc
Tooling further reduced the production cost of single-piece bearing race.
Since the key function area of bearing is in the surface region in raceway area, as long as using NiTi in this key area
Alloy, and other positions (matrix/non-raceway area) can use common steel material such as ordinary carbon steel 20#, 45# or low-alloy
Steel 20Cr, 40Cr, 16MnCr5, GCr15 etc. can meet application requirement.Therefore, in a specific embodiment, the axis
Face where holding the raceway of cycle basis body offers raceway annular groove, and face where the raceway to bearing race matrix carries out cladding,
The step of forming anti-corrosion layer, comprising: cladding is carried out to the raceway annular groove, is formed on the raceway annular groove resistance to
Corrosion layer.
It is easily understood that raceway annular groove, that is, corresponding shaft bearing circle raceway area.
In order to further ensure being formed by the wear-corrosion resistance of anti-corrosion layer, when the rolling in the bearing race matrix
When face where road is machined with raceway annular groove, the depth of the raceway annular groove is greater than or equal to axis applied by bearing race
The 5% of the rolling element diameter held.
The roller surface only contacted with rolling element in bearing race bears fatigue stress, passes through the raceway institute in bearing race matrix
Raceway annular groove is opened up in face, it is only necessary to carry out cladding to form corrosion resistant roller surface, further to raceway annular groove
The consumption for reducing corrosion-resistant raw material further reduces costs under the premise of guaranteeing corrosion resistance.
Meet required precision to guarantee to be formed the size of the bearing race after anti-corrosion layer, avoids being less than institute because of size
It needs size to cause secondary operation, can suitably increase the thickness of anti-corrosion layer in cladding process, at this point, described to bearing cycle basis
The step of face carries out cladding where the raceway of body, forms anti-corrosion layer, obtains corrosion resistant bearing race can also include:
Cladding is carried out to face where the raceway of bearing race matrix, forms anti-corrosion layer；
The anti-corrosion layer is ground, the corrosion resisting bearing circle being ground.
In a specific embodiment, referring to FIG. 3, Fig. 3 is the preparation side of bearing race provided by the embodiment of the present invention
The optional flow chart of method.In order to further increase the hardness and wear-corrosion resistance of anti-corrosion layer, the preparation of the bearing race
Method can also include the following steps:
Step S21: carrying out surface heat rolling to the anti-corrosion layer, obtains heat rolling bearing race.
By carrying out surface heat rolling and processing to anti-corrosion layer, it is corrosion-resistant to improve that the porosity of anti-corrosion layer can be reduced
The consistency of layer, and then improve the hardness and wear-corrosion resistance of anti-corrosion layer.
If the size of heat rolling bearing race reaches required size, no longer need to be ground bearing race；If heat rolling
The size of bearing race is not up to required size, it is also necessary to carry out following grinding step:
Step S22: the anti-corrosion layer of the heat rolling bearing race is ground, the corrosion resisting bearing being ground
Circle.
In another embodiment, referring to FIG. 4, Fig. 4 is the preparation method of bearing race provided by the embodiment of the present invention
Another optional flow chart.In order to eliminate the internal stress of bearing race, the preparation method of the bearing race can also include following step
It is rapid:
Step S31: being heat-treated the anti-corrosion layer, obtains heat treatment bearing race.
The step of heat treatment to be heated to the bearing race of anti-corrosion layer, later using cooling and annealing, with
The internal stress of bearing race is eliminated, the mechanical performance in raceway area is improved.
If the size of heat treatment bearing race reaches required size, no longer need to be ground bearing race；If heat treatment
The size of bearing race is not up to required size, it is also necessary to carry out following grinding step:
Step S32: the anti-corrosion layer of the heat treatment bearing race is ground, the corrosion resisting bearing being ground
Circle.
The embodiment of the present invention also provides a kind of bearing race, is obtained using preparation method above-mentioned.During the work time, only
The roller surface of bearing race contacted with rolling element bears fatigue stress and is then easy to corrode, and other regions of bearing race are not because holding
It is loaded and be not easy to corrode, because face where the raceway of bearing race matrix includes roller surface, by using melting and coating process to bearing
Face carries out cladding where the raceway of cycle basis body, forms consistency height and the anti-corrosion layer with the matrix metallurgical bonding of bearing race, by
Face region where the raceway of bearing race matrix after cladding is directly exposed to natural cooling in air, the anti-corrosion layer after cladding
Cooled and solidified speed it is fast, the tissue of the corrosion resistant bearing race of preparation is fine and closely woven, have good wear-corrosion resistance, into one
Step ground, since face where the raceway only to bearing race matrix carries out cladding, remaining region of bearing race matrix can be using common
Bearing material, avoid and process entire bearing race matrix using corrosion-resistant raw material, the corrosion-resistant raw material of consumption are less, raw
Low energy consumption for production process, to reduce production cost, and since the bearing race matrix to cladding can pass through traditional axis in advance
Circle manufacturing process processing is held, uses cladding method to face progress cladding where the raceway of bearing race to obtain anti-corrosion layer again later,
The tooling using compacting tool set etc is avoided, further reduced the production cost of single-piece bearing race.
In one embodiment, the bearing race includes bearing inner race and bearing outer ring.
The embodiment of the present invention also provides a kind of bearing, including bearing race above-mentioned.Due to the raceway only to bearing race matrix
Place face carries out cladding, remaining region of bearing race matrix can use common bearing material, avoid using corrosion-resistant original
Material processes entire bearing race matrix, and the corrosion-resistant raw material of consumption are less, and low energy consumption for production process, are produced into reduce
This, and since the bearing race matrix to cladding can be processed by traditional bearing race manufacturing process in advance, later again using molten
It covers method and cladding is carried out to obtain anti-corrosion layer to face where the raceway of bearing race, avoid the tooling using compacting tool set etc,
It further reduced the production cost of single-piece bearing race, to reduce the production cost of bearing.
Although the embodiment of the present invention discloses as above, present invention is not limited to this.Anyone skilled in the art, not
It is detached from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should be with right
It is required that subject to limited range.
Claims (11)
1. a kind of preparation method of bearing race characterized by comprising
Bearing race matrix is provided；
Cladding is carried out to face where the raceway of bearing race matrix, anti-corrosion layer is formed, obtains corrosion resisting bearing circle.
2. the preparation method of bearing race as described in claim 1, which is characterized in that face where the raceway of the bearing race matrix
Offer raceway annular groove；
The step of face where the raceway to bearing race matrix carries out cladding, forms anti-corrosion layer, comprising:
Cladding is carried out to the raceway annular groove, forms anti-corrosion layer on the raceway annular groove.
3. the preparation method of bearing race as claimed in claim 2, which is characterized in where the raceway to bearing race matrix
The step of face carries out cladding, forms anti-corrosion layer, obtains corrosion resistant bearing race, comprising:
Cladding is carried out to face where the raceway of bearing race matrix, forms anti-corrosion layer；
The anti-corrosion layer is ground, the corrosion resisting bearing circle being ground.
4. the preparation method of bearing race as claimed in claim 3, which is characterized in that in the raceway institute to bearing race matrix
After the step of face carries out cladding, forms anti-corrosion layer, the anti-corrosion layer is ground described, what is be ground is resistance to
Before the step of corroding bearing race, further includes:
Surface heat rolling is carried out to the anti-corrosion layer, obtains heat rolling bearing race；
Described to be ground to the anti-corrosion layer, the step of corrosion resisting bearing circle being ground, includes:
The anti-corrosion layer of the heat rolling bearing race is ground, the corrosion resisting bearing circle being ground.
5. the preparation method of bearing race as claimed in claim 3, which is characterized in that in the raceway institute to bearing race matrix
After the step of face carries out cladding, forms anti-corrosion layer, the anti-corrosion layer is ground described, what is be ground is resistance to
Before the step of corroding bearing race, further includes:
The anti-corrosion layer is heat-treated, heat treatment bearing race is obtained；
Described to be ground to the anti-corrosion layer, the step of corrosion resisting bearing circle being ground, includes:
The anti-corrosion layer of the heat treatment bearing race is ground, the corrosion resisting bearing circle being ground.
6. the preparation method of bearing race as described in any one in claim 1-5, which is characterized in that described to bearing race matrix
Face where raceway carries out cladding and includes:
Cladding is carried out to face where the raceway of bearing race matrix using Nitinol powder.
7. the preparation method of bearing race as claimed in claim 6, which is characterized in that the granular size of the Nitinol powder
Range is 75 μm -150 μm.
8. such as the preparation method of the described in any item bearing races of claim 2-5, which is characterized in that the raceway annular groove
Depth is greater than or equal to the 5% of the rolling element diameter of bearing applied by bearing race.
9. a kind of bearing race, which is characterized in that the bearing race is added by such as described in any item preparation methods of claim 1-8
Work.
10. bearing race as claimed in claim 9, which is characterized in that the bearing race includes bearing inner race and bearing outer ring.
11. a kind of bearing, is characterized in that, comprising:
Bearing race as described in claim 9 or 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910579465.XA CN110259831A (en) | 2019-06-28 | 2019-06-28 | Bearing, bearing race and preparation method thereof |
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| CN201910579465.XA CN110259831A (en) | 2019-06-28 | 2019-06-28 | Bearing, bearing race and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848264A (en) * | 2019-11-18 | 2020-02-28 | 苏州圣典企业管理咨询有限公司 | Preparation method of bearing retainer for robot with cooling and wear-resisting structure |
| CN111496472A (en) * | 2020-04-08 | 2020-08-07 | 无锡易通精密机械股份有限公司 | Surface smoothness treatment processing technology for bearing ring production |
| CN113357269A (en) * | 2021-07-05 | 2021-09-07 | 太原科技大学 | Method for manufacturing outer ring of rolling bearing |
-
2019
- 2019-06-28 CN CN201910579465.XA patent/CN110259831A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848264A (en) * | 2019-11-18 | 2020-02-28 | 苏州圣典企业管理咨询有限公司 | Preparation method of bearing retainer for robot with cooling and wear-resisting structure |
| CN111496472A (en) * | 2020-04-08 | 2020-08-07 | 无锡易通精密机械股份有限公司 | Surface smoothness treatment processing technology for bearing ring production |
| CN113357269A (en) * | 2021-07-05 | 2021-09-07 | 太原科技大学 | Method for manufacturing outer ring of rolling bearing |
| CN113357269B (en) * | 2021-07-05 | 2022-08-12 | 太原科技大学 | Method for manufacturing outer ring of rolling bearing |
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