CN116005031A - Ceramic bearing manufacturing method - Google Patents
Ceramic bearing manufacturing method Download PDFInfo
- Publication number
- CN116005031A CN116005031A CN202211663707.1A CN202211663707A CN116005031A CN 116005031 A CN116005031 A CN 116005031A CN 202211663707 A CN202211663707 A CN 202211663707A CN 116005031 A CN116005031 A CN 116005031A
- Authority
- CN
- China
- Prior art keywords
- powder
- bearing
- blank
- ceramic
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 121
- 238000000034 method Methods 0.000 claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 229910052582 BN Inorganic materials 0.000 claims description 48
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 48
- 239000002245 particle Substances 0.000 claims description 35
- 238000000498 ball milling Methods 0.000 claims description 27
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 23
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 23
- 239000002270 dispersing agent Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 15
- 238000011049 filling Methods 0.000 claims description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 230000003116 impacting effect Effects 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 26
- 239000004033 plastic Substances 0.000 abstract description 7
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000007822 coupling agent Substances 0.000 description 19
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 7
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 7
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 description 7
- 239000005642 Oleic acid Substances 0.000 description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 7
- 235000021355 Stearic acid Nutrition 0.000 description 7
- 229930016911 cinnamic acid Natural products 0.000 description 7
- 235000013985 cinnamic acid Nutrition 0.000 description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 7
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 7
- 239000008117 stearic acid Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000001272 pressureless sintering Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention provides a method for manufacturing a ceramic bearing, which belongs to the technical field of bearing manufacturing, and comprises the following steps: uniformly mixing ceramic matrix powder and nanometer copper powder to form a blank; the blank is impact formed at high speed in a vacuum environment. Wherein: the nano copper powder is used as a binder, blanks are compacted through a high-speed impact forming process, instantaneous friction force among blank powder generates instantaneous high temperature to melt the nano copper powder, and the blanks are subjected to plastic shaping instantaneously to obtain the ceramic bearing. Compared with the prior art, the invention has the advantages of simple process, rapid forming, low cost and easy mass production, and meanwhile, the rotating speed of the manufactured bearing can reach over 9000 revolutions per minute, no noise exists in the rotating process, and the requirements of equipment on high rotating speed and silence are met. In addition, the bearing does not depend on lubricating oil in use, so that the service life of the bearing can be prolonged.
Description
Technical Field
The invention relates to the technical field of precision bearing manufacturing, in particular to a ceramic bearing manufacturing method.
Background
The bearing is an important basic part of various mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient of the mechanical rotating body in the transmission process and ensuring the rotation precision of the mechanical rotating body. Bearings can be classified into rolling bearings and sliding bearings according to the friction properties of the moving elements. Wherein: the sliding bearing is made of wear-resistant materials, is used for mechanical rotation parts with low speed, light load and difficult maintenance, and needs to have the characteristics of good high temperature resistance, corrosion resistance, heat conductivity, fatigue resistance and the like.
Ceramic materials generally adopt ceramic sintering technology to manufacture ceramic bearings because of the advantages of high temperature resistance, corrosion resistance, high elastic modulus, long service life and the like. This conventional ceramic bearing sintering process has at least the following drawbacks:
1. the existing sintering process has strict requirements on production conditions, long manufacturing period and high cost.
2. The bearing has loud noise and low rotating speed in the rotating process, and can not meet the requirements of equipment on silence and high rotating speed.
3. The bearings must be lubricated in service and quickly discarded without lubrication.
Disclosure of Invention
The present invention aims to propose a method for manufacturing a ceramic bearing with the aim of at least partially solving at least one of the above-mentioned technical problems.
In order to solve the technical problems, the invention provides a method for manufacturing a ceramic bearing, which comprises the following steps:
uniformly mixing ceramic matrix powder and nanometer copper powder to form a blank;
the blank is impact formed at high speed in a vacuum environment.
According to a preferred embodiment of the present invention, the ceramic substrate is at least one selected from the group consisting of boron nitride, silicon nitride, aluminum oxide, silicon carbide, and zirconium oxide.
According to a preferred embodiment of the invention, the ceramic matrix powder is boron nitride powder, and the mass percentage of the boron nitride powder is as follows: 55-85% of nanometer copper powder by mass percent: 45-15%.
According to a preferred embodiment of the invention, the ceramic matrix powder is boron nitride powder and silicon nitride powder, wherein the mass percentage of the boron nitride powder is as follows: 35-45% of silicon nitride powder by mass percent: 25-35% of nanometer copper powder by mass percent: 25-30%.
According to a preferred embodiment of the present invention, the ceramic base powder is a boron nitride powder, a silicon nitride powder, and an aluminum oxide powder, the boron nitride powder being in mass percent: 35-55% of silicon nitride powder by mass percent: 15-25% of aluminum oxide powder by mass percent: 10-18% of nanometer copper powder, which comprises the following components in percentage by mass: 15-20%.
According to a preferred embodiment of the invention, a dispersant is also added in an amount of 0.15 to 0.25% by mass before mixing.
According to a preferred embodiment of the present invention, the ceramic matrix powder has a particle size of 15 to 120. Mu.m.
According to a preferred embodiment of the invention, the ceramic matrix powder and the nanometer copper powder are uniformly mixed to form a blank through wet ball milling treatment or ball milling treatment; wherein:
the wet ball milling treatment comprises the following steps: the mass ratio of the ball material is 5-30: 1, the mixing rotating speed is 80-600 r/min, and the mixing time is 1-6 h; the solvent added in the wet ball milling treatment is water, alcohol or acetone;
the ball milling treatment is as follows: the mass ratio of the ball materials is 10-20: 1, the mixing rotating speed is 50-400 r/min, and the mixing time is 12-24 h.
According to a preferred embodiment of the present invention, the high-speed impact forming of the blank in a vacuum environment comprises:
vacuumizing the bearing vacuum cavity;
filling the blank into a bearing vacuum cavity;
applying 50-70 MPa pressure and impacting and compacting the blank at the speed of 50-70 m/s for 1-2 min, so that the blank is plastically deformed to obtain the bearing;
and opening the outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
In summary, according to the method for manufacturing the ceramic bearing, the ceramic matrix powder and the nano copper powder are uniformly mixed to form the blank, and the blank is subjected to high-speed impact forming in a vacuum environment. Wherein: the nanometer copper powder is used as a binder, the melting point (about 40 ℃) is low in a vacuum environment, blanks are compacted through a high-speed impact forming process, instantaneous friction force between the blank powder generates instantaneous high temperature to melt the nanometer copper powder, and the blanks are subjected to plastic shaping instantaneously, so that the ceramic bearing is obtained. Compared with the prior art, the invention has at least the following beneficial effects:
1. simple process, rapid forming, low cost and easy mass production.
2. The rotational speed of the manufactured bearing can reach over 9000 revolutions per minute, no noise is generated in the rotating process, and the requirements of equipment on high rotational speed and silence are met.
3. The high-speed impact forming process is adopted to make the surface of the bearing smooth, the bearing does not depend on lubricating oil in use, and the service life of the bearing can be prolonged.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a ceramic bearing according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The invention provides a method for manufacturing a ceramic bearing, as shown in fig. 1, which comprises the following steps:
s1, uniformly mixing ceramic matrix powder and nano copper powder to form a blank;
wherein: the ceramic matrix may be at least one selected from the group consisting of boron nitride, silicon nitride, aluminum oxide, silicon carbide, and zirconium oxide. The grain size of the ceramic matrix powder is 15-120 mu m, and the nanometer copper powder is used as a binder.
The mass percentages of the ceramic matrix powder and the nanometer copper powder are determined according to the components of the ceramic matrix powder. In one example, the ceramic matrix powder is a boron nitride powder, the boron nitride powder being in mass percent: 55-85% of nanometer copper powder by mass percent: 45-15%. In another example, the ceramic matrix powder is a boron nitride powder and a silicon nitride powder, the boron nitride powder being in mass percent: 35-45% of silicon nitride powder by mass percent: 25-35% of nanometer copper powder by mass percent: 25-30%. In yet another example, the ceramic matrix powder is a boron nitride powder, a silicon nitride powder, and an aluminum oxide powder, the boron nitride powder being in mass percent: 35-55% of silicon nitride powder by mass percent: 15-25% of aluminum oxide powder by mass percent: 10-18% of nanometer copper powder, which comprises the following components in percentage by mass: 15-20%.
Furthermore, in order to avoid spontaneous agglomeration of the powder in the mixing process and agglomeration, a proper amount of dispersing agent can be added into each powder raw material before mixing so as to form a protective layer on the surface of the powder particles and reduce the agglomeration effect among the powder. Alternatively, the dispersant may be: a coupling agent for ferrite, a coupling agent for cinnamic acid and acetic acid, stearic acid, oleic acid and the like. Wherein: the ferrite acid coupling agent and the cinnamic acid coupling agent are adsorbed on the surfaces of the particles in a covalent bond mode, and stearic acid and oleic acid are adsorbed on the surfaces of the particles in a hydrogen bond mode through Lewis acid-base reaction. In the embodiment, the mass percentage of the dispersing agent is controlled to be 0.15-0.25%, so that the defects of blocking a thermal cracking discharge channel of the adhesive to prevent the adhesive from being discharged and forming bubbles, cracks and the like on the surface are avoided.
In this embodiment, it is possible to employ: the powder raw materials are mixed by wet ball milling or ball milling. The specific mixing time and speed will depend on the mixing regime employed. In one example, a wet ball milling process is employed, which is: the mass ratio of the ball material is 5-30: 1, the mixing rotating speed is 80-600 r/min, and the mixing time is 1-6 h; the solvent added in the wet ball milling treatment is water, alcohol or acetone. In another example, a ball milling process is employed, the ball milling process being: the mass ratio of the ball materials is 10-20: 1, the mixing rotating speed is 50-400 r/min, and the mixing time is 12-24 h.
S2, performing high-speed impact forming on the blank in a vacuum environment.
Wherein: high-speed impact forming refers to a process of plastic forming a material with an instantaneous impact force generated by sudden release of energy. The present embodiment impact shapes the blank at high speed by controlling the impact speed in a vacuum environment. During high speed impact forming: the nanometer copper powder is used as a binder, the melting point (about 40 ℃) is low in a vacuum environment, the blank is compacted by high-speed impact force, instantaneous friction force between blank powder generates instantaneous high temperature to melt the nanometer copper powder, and the blank is subjected to plastic shaping instantaneously, so that the ceramic bearing is obtained.
Illustratively, this step may include:
s21, vacuumizing the bearing vacuum cavity;
wherein: bearing molds of various shapes and sizes can be arranged in the bearing vacuum cavity. Before the step, a bearing die can be selected according to the shape and the size of the bearing to be manufactured, the bearing die is arranged in the bearing vacuum cavity, and the whole bearing vacuum cavity is vacuumized by adopting a vacuum pump.
S22, filling the blank into a bearing vacuum cavity;
in this embodiment, the blank filled into the bearing vacuum cavity each time is determined according to the shape and size of the bearing to be manufactured, so as to ensure that the manufactured bearing meets the shape and size requirements and provide bearing precision.
Illustratively, prior to this step, the volume V of the bearing to be manufactured may be calculated in advance according to the shape and size of the bearing to be manufactured, with the volume of the blank filled into the bearing vacuum chamber each time being between n (1.2-1.5) V. Wherein: n is the number of bearings that can be produced per packing.
S23, applying pressure of 50-70 MPa, impacting and compacting the blank at a speed of 50-70 m/S for 1-2 min, and plastically deforming the blank to obtain the bearing;
compacting the blank by high-speed impact force, and generating instantaneous high temperature by instantaneous friction force between blank powder to melt the nanometer copper powder and instantly plastically shaping the blank to obtain the ceramic bearing.
S24, opening an outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
And (3) through S21-S24, 1 bearing is produced and molded, and the S24 is repeatedly circulated to produce other bearings until blanks in the bearing vacuum cavity are used up, and one batch of bearings are produced and molded. The cycles S1 to S24 are repeated to produce other batches of bearings.
The invention is further illustrated, but not limited, by the following examples.
Example 1
A method of manufacturing a ceramic bearing, the method comprising:
s101, preparing boron nitride powder and nanometer copper powder with particle sizes of 75 microns.
In this step, the boron nitride powder may be screened through a 200-mesh screen several times to obtain boron nitride powder having a particle size of 75. Mu.m. Wherein: the nanometer copper powder refers to copper particle powder with the particle size of 1-100 nm, and can be prepared by a chemical vapor deposition method, an evaporation and condensation method, a mechanical crushing method and the like.
S102, weighing 75.20% of boron nitride powder, 24.62% of nano copper powder and 0.18% of dispersing agent according to mass percentage.
Wherein: the dispersant may be: the present invention is not particularly limited, and the coupling agent may be a ferrite coupling agent, a cinnamic acid coupling agent, stearic acid, or oleic acid.
S103, uniformly mixing the boron nitride powder, the nanometer copper powder and the dispersing agent through wet ball milling treatment to form a blank;
optionally, the boron nitride powder and the nanometer copper powder can be dried in vacuum, and the mass ratio of the selected spherical materials is 28:1, the mixing rotating speed is as follows: 100r/min, and the mixing time is 3h; and water was added as a solvent in the wet ball milling process. And carrying out vacuum drying after the wet ball milling treatment is completed, and obtaining a blank.
S104, vacuumizing the bearing vacuum cavity;
s105, filling a blank with the volume of 1.35nV into the bearing vacuum cavity;
wherein: v is the volume of the bearing to be manufactured and can be calculated from the shape and size of the bearing to be manufactured. n is the number of bearings which can be produced by each filling material and can be configured according to the production requirement.
S106, applying 65MPa pressure, impacting and compacting the blank at a speed of 65m/S for 2min, and plastically deforming the blank to obtain the bearing;
s107, opening an outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
Example 2
A method of manufacturing a ceramic bearing, the method comprising:
s201, preparing boron nitride powder with the particle size of 18 mu m and nanometer copper powder.
In this step, the boron nitride powder may be screened through a 800 mesh sieve several times to obtain boron nitride powder having a particle size of 18. Mu.m. Wherein: the nanometer copper powder refers to copper particle powder with the particle size of 1-100 nm, and can be prepared by a chemical vapor deposition method, an evaporation and condensation method, a mechanical crushing method and the like.
S202, weighing 82.15% of boron nitride powder, 17.62% of nano copper powder and 0.23% of dispersing agent according to mass percent.
Wherein: the dispersant may be: the present invention is not particularly limited, and the coupling agent may be a ferrite coupling agent, a cinnamic acid coupling agent, stearic acid, or oleic acid.
S203, uniformly mixing the boron nitride powder, the nanometer copper powder and the dispersing agent through ball milling treatment to form a blank;
optionally, vacuum drying the boron nitride powder and the nanometer copper powder, and selecting a ball material with a mass ratio of 17:1, wherein: the grinding balls may be made using pressureless sintering to silicon carbide. The mixing speed was 320r/min and the mixing time was 18h. And drying after ball milling treatment is completed to obtain a blank.
S204, vacuumizing the bearing vacuum cavity;
s205, filling a blank with the volume of 1.45nV into a bearing vacuum cavity;
wherein: v is the volume of the bearing to be manufactured and can be calculated from the shape and size of the bearing to be manufactured. n is the number of bearings which can be produced by each filling material and can be configured according to the production requirement.
S206, applying 53MPa pressure, and impacting and compacting the blank at a speed of 58m/S for 1.2min to enable the blank to be subjected to plastic deformation to obtain the bearing;
s207, opening an outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
Example 3
A method of manufacturing a ceramic bearing, the method comprising:
s301, preparing boron nitride powder with the particle size of 75 microns, aluminum oxide powder with the particle size of 75 microns, zirconium oxide powder with the particle size of 75 microns and nanometer copper powder.
In this step, boron nitride powder, aluminum oxide powder, and zirconium oxide powder may be screened through a 200-mesh sieve a plurality of times, respectively, to obtain boron nitride powder having a particle size of 75 μm, aluminum oxide powder having a particle size of 75 μm, and zirconium oxide powder having a particle size of 75 μm.
Wherein: the nanometer copper powder refers to copper particle powder with the particle size of 1-100 nm, and can be prepared by a chemical vapor deposition method, an evaporation and condensation method, a mechanical crushing method and the like.
S302, weighing 50.00% of boron nitride powder, 16.00% of alumina powder, 17.22% of zirconia powder, 16.62% of nano copper powder and 0.16% of dispersing agent according to mass percentage.
Wherein: the dispersant may be: the present invention is not particularly limited, and the coupling agent may be a ferrite coupling agent, a cinnamic acid coupling agent, stearic acid, or oleic acid.
S303, uniformly mixing boron nitride powder, alumina powder, zirconia powder, nano copper powder and a dispersing agent through ball milling treatment to form a blank;
optionally, selecting a ball material mass ratio of 19:1, wherein: the grinding balls may be made using pressureless sintering to silicon carbide. The mixing speed is 380r/min, and the mixing time is 23h. And drying after ball milling treatment is completed to obtain a blank.
S304, vacuumizing the bearing vacuum cavity;
s305, filling a blank with the volume of 1.32nV into the bearing vacuum cavity;
wherein: v is the volume of the bearing to be manufactured and can be calculated from the shape and size of the bearing to be manufactured. n is the number of bearings which can be produced by each filling material and can be configured according to the production requirement.
S306, applying 48MPa pressure, and impacting and compacting the blank at a speed of 47m/S for 1.8min to enable the blank to be subjected to plastic deformation to obtain the bearing;
s307, opening the outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
Example 4
A method of manufacturing a ceramic bearing, the method comprising:
s401, preparing boron nitride powder with the particle size of 18 mu m, silicon nitride powder with the particle size of 23 mu m and nanometer copper powder.
In the step, boron nitride powder can be screened through a 800-mesh sieve for multiple times to obtain boron nitride powder with the particle size of 18 mu m; the silicon nitride powder was screened through a 600 mesh sieve several times to obtain a silicon nitride powder having a particle size of 23. Mu.m.
Wherein: the nanometer copper powder refers to copper particle powder with the particle size of 1-100 nm, and can be prepared by a chemical vapor deposition method, an evaporation and condensation method, a mechanical crushing method and the like.
S402, weighing 45.22% of boron nitride powder, 30.35% of silicon nitride powder, 24.22% of nano copper powder and 0.21% of dispersing agent according to mass percentage.
Wherein: the dispersant may be: the present invention is not particularly limited, and the coupling agent may be a ferrite coupling agent, a cinnamic acid coupling agent, stearic acid, or oleic acid.
S403, uniformly mixing boron nitride powder, silicon carbide powder, nanometer copper powder and a dispersing agent through ball milling treatment to form a blank;
optionally, the mass ratio of the selected ball materials is 10:1, wherein: the grinding balls may be made using pressureless sintering to silicon carbide. The mixing speed was 250r/min and the mixing time was 20h. And drying after ball milling treatment is completed to obtain a blank.
S404, vacuumizing the bearing vacuum cavity;
s405, filling a blank with the volume of 1.22nV into a bearing vacuum cavity;
wherein: v is the volume of the bearing to be manufactured and can be calculated from the shape and size of the bearing to be manufactured. n is the number of bearings which can be produced by each filling material and can be configured according to the production requirement.
S406, applying 55MPa pressure and impacting and compacting the blank at a speed of 65m/S for 1min, so that the blank is subjected to plastic deformation to obtain a bearing;
s407, opening an outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
Example 5
A method of manufacturing a ceramic bearing, the method comprising:
s501, preparing boron nitride powder with the particle size of 90 microns, silicon nitride powder with the particle size of 80 microns, aluminum oxide powder with the particle size of 75 microns and nanometer copper powder.
In the step, boron nitride powder can be screened through a 170-mesh sieve for many times to obtain boron nitride powder with the particle size of 90 mu m; sieving silicon nitride powder for multiple times through a 180-mesh sieve to obtain silicon nitride powder with the particle size of 80 mu m; the alumina powder was screened through a 200-mesh sieve several times to obtain an alumina powder having a particle size of 75. Mu.m.
Wherein: the nanometer copper powder refers to copper particle powder with the particle size of 1-100 nm, and can be prepared by a chemical vapor deposition method, an evaporation and condensation method, a mechanical crushing method and the like.
S502, weighing 38.45% of boron nitride powder, 20.32% of silicon nitride powder, 16.79% of aluminum oxide powder, 24.22% of nano copper powder and 0.22% of dispersing agent according to mass percentage.
Wherein: the dispersant may be: the present invention is not particularly limited, and the coupling agent may be a ferrite coupling agent, a cinnamic acid coupling agent, stearic acid, or oleic acid.
S503, uniformly mixing boron nitride powder, silicon carbide powder, aluminum oxide powder, nanometer copper powder and a dispersing agent through ball milling treatment to form a blank;
optionally, selecting a ball material mass ratio of 15:1, wherein: the grinding balls may be made using pressureless sintering to silicon carbide. The mixing speed is 350r/min, and the mixing time is 22h. And drying after ball milling treatment is completed to obtain a blank.
S504, vacuumizing the bearing vacuum cavity;
s505, filling a blank with the volume of 1.42nV into a bearing vacuum cavity;
wherein: v is the volume of the bearing to be manufactured and can be calculated from the shape and size of the bearing to be manufactured. n is the number of bearings which can be produced by each filling material and can be configured according to the production requirement.
S506, applying 68MPa pressure, and impacting and compacting the blank at the speed of 68m/S for 1.5min to enable the blank to be plastically deformed to obtain the bearing;
s507, opening an outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
The ceramic bearing manufactured by the method can reach 9000-12000 r/min in rotating speed, does not generate noise, and meets the requirements of high rotating speed and silence. Because the high rotating speed can lead the temperature of the bearing to be higher, and the bearing can be burnt by adding the lubricant, the ceramic bearing manufactured by the invention does not need to be added with the lubricant in the use process, and the service life of the bearing is prolonged.
Further performance tests were performed on the ceramic bearings manufactured in the respective examples; wherein:
rotational speed: the manufactured ceramic bearing is mounted on a rack, a lubricant is not added, and the rotating speed is tested when the running temperature of the bearing is constant;
noise: according to the standard GB12348-2008, an automatic ambient noise detector is adopted;
hardness: vickers hardness tester, load 350gf, holding time 15s;
tensile strength: according to the standard GB-T228.1-2010, the stretching speed is 1.5mm/min by measuring on an electronic universal tester; radial crush strength: according to the standard GB-T6804-2008, the compression rate is 1.2mm/min;
coefficient of friction: the ball disc at room temperature is in contact with the rotating wear mode, the load is 6N, the friction rotation speed is 2500rmp, the friction radius is 2.5mm, and the friction time is 40min. The test results are shown in Table 1.
TABLE 1 results of Performance test of ceramic bearings of various examples
As can be seen from table 1: the rotational speed of the ceramic bearing manufactured by the method can reach 9000-12000 r/min, and the noise in the rotating process is lower than 30, so that the ceramic bearing can be regarded as mute. The whole use process does not need lubricating oil, has higher hardness, tensile strength and friction coefficient, and has excellent comprehensive performance and strong practicability.
It should be understood that the invention is not limited to the particular constructions and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
Claims (9)
1. A method of manufacturing a ceramic bearing, comprising:
uniformly mixing ceramic matrix powder and nanometer copper powder to form a blank;
the blank is impact formed at high speed in a vacuum environment.
2. The method of manufacturing a ceramic bearing according to claim 1, wherein the ceramic substrate is at least one selected from the group consisting of boron nitride, silicon nitride, aluminum oxide, silicon carbide, and zirconium oxide.
3. The method of manufacturing a ceramic bearing according to claim 2, wherein the ceramic base powder is boron nitride powder, and the mass percentage of the boron nitride powder is: 55-85% of nanometer copper powder by mass percent: 45-15%.
4. The method of manufacturing a ceramic bearing according to claim 2, wherein the ceramic base powder is a boron nitride powder and a silicon nitride powder, the boron nitride powder being in mass percent: 35-45% of silicon nitride powder by mass percent: 25-35% of nanometer copper powder by mass percent: 25-30%.
5. The method of manufacturing a ceramic bearing according to claim 2, wherein the ceramic base powder is a boron nitride powder, a silicon nitride powder, and an aluminum oxide powder, the boron nitride powder being in mass percent: 35-55% of silicon nitride powder by mass percent: 15-25% of aluminum oxide powder by mass percent: 10-18% of nanometer copper powder, which comprises the following components in percentage by mass: 15-20%.
6. The method according to any one of claims 3 to 5, wherein a dispersant is further added in an amount of 0.15 to 0.25% by mass before mixing.
7. The method of manufacturing a ceramic bearing according to claim 1, wherein the particle size of the ceramic base powder is 15 to 120 μm.
8. The method for manufacturing a ceramic bearing according to claim 1, wherein the ceramic base powder and the nano copper powder are uniformly mixed by wet ball milling treatment or ball milling treatment to form a blank; wherein:
the wet ball milling treatment comprises the following steps: the mass ratio of the ball material is 5-30: 1, the mixing rotating speed is 80-600 r/min, and the mixing time is 1-6 h; the solvent added in the wet ball milling treatment is water, alcohol or acetone;
the ball milling treatment is as follows: the mass ratio of the ball materials is 10-20: 1, the mixing rotating speed is 50-400 r/min, and the mixing time is 12-24 h.
9. The method of manufacturing a ceramic bearing according to claim 1, wherein the high-speed impact forming of the blank in a vacuum environment comprises:
vacuumizing the bearing vacuum cavity;
filling the blank into a bearing vacuum cavity;
applying 5-7 MPa pressure and impacting and compacting the blank at the speed of 50-70 m/s for 1-2 min to enable the blank to be plastically deformed to obtain the bearing;
and opening the outlet of the bearing vacuum cavity, and dropping the bearing into the finished product box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663707.1A CN116005031A (en) | 2022-12-23 | 2022-12-23 | Ceramic bearing manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211663707.1A CN116005031A (en) | 2022-12-23 | 2022-12-23 | Ceramic bearing manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116005031A true CN116005031A (en) | 2023-04-25 |
Family
ID=86026010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211663707.1A Pending CN116005031A (en) | 2022-12-23 | 2022-12-23 | Ceramic bearing manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116005031A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455820A (en) * | 2000-07-25 | 2003-11-12 | Ck管理股份公司 | Method of producing ceramic body by coalescence and ceramic body produced |
-
2022
- 2022-12-23 CN CN202211663707.1A patent/CN116005031A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455820A (en) * | 2000-07-25 | 2003-11-12 | Ck管理股份公司 | Method of producing ceramic body by coalescence and ceramic body produced |
| CN1457277A (en) * | 2000-07-25 | 2003-11-19 | Ck管理股份公司 | Method of producing composite body by coalescence and composite body produced |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100187616B1 (en) | Sintered friction material composite copper alloy powder used therefor and manufacturing method thereof | |
| CN104926313B (en) | A kind of high heat conductance reaction sintering silicon carbide ceramic material and preparation method thereof | |
| CN1047805C (en) | High-strnegth self-lubricating composite material for high-temperature use and process for producing the same | |
| CN102030538A (en) | Production method of aluminum nitride ceramic and aluminum nitride ceramic prepared by same | |
| EP2979780A1 (en) | Copper alloy powder, sintered copper alloy body and brake lining for use in high-speed railway | |
| WO2014038459A1 (en) | Metal-carbon composite material, method for producing metal-carbon composite material and sliding member | |
| US7255933B2 (en) | Multi-layer sliding part and a method for its manufacture | |
| CN1291048C (en) | Magnesium base composite material and method for production thereof | |
| CN116005031A (en) | Ceramic bearing manufacturing method | |
| CN101695822A (en) | Formula of diamond super-thin cutting disc for cutting of magnetic materials and production technology thereof | |
| CN106906388A (en) | A kind of preparation method of silumin | |
| CN101695823A (en) | Formula of diamond super-thin cutting disc for wafer cutting and production technology thereof | |
| CN101758465A (en) | Prescription and production process of diamond ultrathin slice for sapphire and crystal cutting | |
| JPH08245949A (en) | Dry-type friction material and its production | |
| Yang et al. | Wear behavior of cold pressed and sintered Al 2 O 3/TiC/CaF 2-Al 2 O 3/TiC laminated ceramic composite | |
| CN100396952C (en) | Friction device | |
| TWI601586B (en) | Braking pad | |
| CN102154568A (en) | Method for preparing Mo-W-Cu alloy | |
| JP3485270B2 (en) | Wet friction material | |
| CN101758443A (en) | Prescription and production process of diamond ultrathin slice for ceramic substrate cutting | |
| CN111085687A (en) | Self-lubricating composite material and production process thereof | |
| CN117447203B (en) | Carbon graphite-boron nitride composite material and preparation method and application thereof | |
| CN113480848A (en) | Method for synergistically modifying resin-based composite material by using silicon carbide and tungsten disulfide | |
| JPH108164A (en) | Production of aluminum composite with low thermal expansion and high thermal conductivity, and its composite | |
| JP2813159B2 (en) | Manufacturing method of aluminum sintered material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |