CN114888646A - Grinding and polishing method for porous polyimide surface for high-speed bearing - Google Patents
Grinding and polishing method for porous polyimide surface for high-speed bearing Download PDFInfo
- Publication number
- CN114888646A CN114888646A CN202210693694.6A CN202210693694A CN114888646A CN 114888646 A CN114888646 A CN 114888646A CN 202210693694 A CN202210693694 A CN 202210693694A CN 114888646 A CN114888646 A CN 114888646A
- Authority
- CN
- China
- Prior art keywords
- grinding
- polishing
- porous polyimide
- speed bearing
- speed
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
- B24B37/10—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/30—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a grinding and polishing method of a porous polyimide surface for a high-speed bearing, which comprises the following steps: s1, respectively polishing the surfaces of the porous polyimide materials by using silicon carbide abrasive paper with different meshes, and polishing the surfaces to be flat; s2, respectively using alumina grinding pastes with different grinding particle sizes, uniformly spreading the alumina grinding pastes on a polishing pad, and grinding on a high-speed grinder to realize surface fine polishing, wherein the surface of the porous polyimide is mirror-smooth; and S3, ultrasonically cleaning the surface of the porous polyimide by using absolute ethyl alcohol and deionized water respectively, and cleaning the residual grinding particles. The method can reduce the surface roughness of the porous polyimide for the high-speed bearing, improve the lubricating property of the porous polyimide, simultaneously reduce the generation of corresponding black substances in the abrasion process, prolong the service life of the polyimide bearing retainer, and has simple method and low cost.
Description
Technical Field
The invention relates to the technical field of grinding and polishing, in particular to surface grinding and polishing of a porous polyimide material of a high-speed bearing for aerospace.
Background
The porous polyimide material plays an important role in the fields of aerospace, precision machinery and the like due to the advantages of low density, good self-lubricating and oil storage performances, strong corrosion resistance and the like, and particularly can realize good self-lubricating performance when used for manufacturing a space high-speed bearing retainer. However, in practical application, due to long-term frictional wear between the small balls in the rolling bearing and the bearing material, the surface wear region of the porous polyimide material can be blackened, so that the wear of the bearing is increased, and the service life of the bearing is finally influenced. How to improve the friction performance of the porous polyimide material and inhibit the corresponding blackening phenomenon, so that the service life of the bearing is prolonged is an important research direction at present. Improving the surface quality is considered as a method for improving the lubricating performance of porous polyimide and reducing the frictional wear, but the research on the related grinding and polishing methods is still less.
Disclosure of Invention
The invention aims to solve the problems mentioned in the background technology and provide a method for grinding and polishing the surface of porous polyimide for a high-speed bearing.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a grinding and polishing method of a porous polyimide surface for a high-speed bearing specifically comprises the following steps:
s1, respectively polishing the surfaces of the porous polyimide materials by using silicon carbide abrasive paper with different meshes, and polishing the surfaces to be flat;
s2, respectively using alumina grinding pastes with different grinding particle sizes, uniformly spreading the alumina grinding pastes on a polishing pad, and grinding on a high-speed grinder to realize surface fine polishing, wherein the surface of the porous polyimide is mirror-smooth;
and S3, ultrasonically cleaning the surface of the porous polyimide by using absolute ethyl alcohol and deionized water respectively, and cleaning the residual grinding particles.
Preferably, the silicon carbide abrasive paper of step S1 has a mesh size ranging from 500 meshes to 3000 meshes.
Preferably, the silicon carbide abrasive paper of step S1 is made of a silicon carbide abrasive composite fiber paper base.
Preferably, the silicon carbide sanding of step S1 is performed in a running water environment.
Preferably, the alumina abrasive paste of step S2 has an abrasive grain size of 0.5W to 3W.
Preferably, the alumina abrasive paste of step S2 includes alumina micropowder, hydroxymethyl cellulose, water, alcohol and glycerol as main components.
Preferably, the rotation speed of the grinder in the step S2 is 800r/min to 1200r/min, and the grinding rotation speeds of the grinding pastes with different meshes are consistent.
Preferably, the polishing pad of step S2 is a woolen polishing pad, and the main component is synthetic fiber.
As a preferable scheme, the ultrasonic cleaning time of the step S3 is 2min to 4 min.
Preferably, the ultrasonic frequency of step S3 is 30kHz to 50 kHz.
Compared with the prior art, the invention has the advantages that: the polishing method can effectively inhibit the generation of corresponding black substances in the abrasion process and prolong the service life of the polyimide bearing retainer; the polishing method can reduce the roughness of the surface of the porous polyimide, improve the surface quality and the surface smoothness of the porous polyimide material, reduce the friction coefficient and the abrasion, and improve the lubricating performance of the corresponding porous polyimide bearing. The polishing method has the advantages of convenient raw material acquisition, low cost, simple operation process and easy operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of step S1 of the polishing method for porous polyimide material according to the present invention.
Fig. 2 is a schematic diagram of step S2 of the polishing method for porous polyimide material according to the present invention.
Fig. 3 is a schematic diagram of step S3 of the polishing method for porous polyimide material according to the present invention.
FIG. 4 is a comparison graph of the sample obtained after the treatment of example 1 of the present invention and the original sample on the blackening phenomenon at the wear scar position.
FIG. 5 is a comparison of the cross-sectional profile of a wear scar between a sample obtained after treatment according to example 1 of the present invention and the original sample.
FIG. 6 is a graph showing the comparison between the friction coefficient of a sample obtained after the treatment of example 1 according to the present invention and that of the original sample.
FIG. 7 is an SEM comparison of the surface topography of a sample obtained after treatment according to example 1 of the present invention and the original sample.
As shown in the figure: 1. porous polyimide sample, 2, silicon carbide abrasive paper, 3, a high-speed grinding machine, 4, a polishing pad, 5, a clamping device, 6, a water outlet device, 7, an ultrasonic cleaning machine, 8, a beaker, 9, absolute ethyl alcohol and deionized water.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
Example 1
And (3) respectively polishing the surface of the porous polyimide material for 1min, 2min and 3min in a running water environment by using 800-mesh, 2000-mesh and 3000-mesh silicon carbide abrasive paper, removing surface impurities and attachments, finishing the surface rough polishing process, and obtaining a porous polyimide sample with a smooth surface. Fixing a polishing pad on a high-speed grinding machine, uniformly spreading 5W of alumina grinding paste on the surface of the polishing pad, grinding the surface of the porous polyimide for 3min at the rotating speed of 900r/min, taking down the original polishing pad, replacing a new polishing pad, fixing the new polishing pad on the high-speed grinding machine, uniformly spreading 2W of alumina grinding paste on the surface of the polishing pad, grinding the surface of the porous polyimide for 4min at the rotating speed of 900r/min, taking down the original polishing pad, replacing the new polishing pad, fixing the new polishing pad on the high-speed grinding machine, uniformly spreading 0.5W of alumina grinding paste on the surface of the polishing pad, grinding the surface of the porous polyimide for 5min at the rotating speed of 900r/min, finishing the finishing polishing process, respectively ultrasonically cleaning the porous polyimide for 2min at the frequency of 40kHz by using absolute ethyl alcohol and deionized water, and possibly removing residual particles on the surface and pollutants possibly brought in the polishing process, finally obtaining a porous polyimide sample with the surface roughness Ra of 0.05-0.1 μm.
Example 2
And (3) respectively polishing the surface of the porous polyimide material for 1min, 2min and 3min in a running water environment by using 500-mesh, 1500-mesh and 3000-mesh silicon carbide abrasive paper, removing surface impurities and attachments, finishing the surface rough polishing process, and obtaining a porous polyimide sample with a smooth surface. The polishing pad is fixed on a high-speed grinder, 5W of alumina grinding paste is uniformly spread on the surface of the polishing pad, grinding the surface of the porous polyimide for 3min at the rotating speed of 1200r/min, taking off the original polishing pad, then a new polishing pad is arranged on a high-speed grinding machine for fixation, 2.5W of alumina grinding paste is evenly spread on the surface of the polishing pad, polishing the surface of the porous polyimide for 4min at the rotating speed of 900r/min, taking off the original polishing pad, then a new polishing pad is replaced and is placed on a high-speed grinding machine for fixation, then 0.5W of alumina grinding paste is evenly spread on the surface of the polishing pad, polishing the surface of the porous polyimide for 5min at the rotating speed of 900r/min to finish the fine polishing process, then respectively ultrasonically cleaning the sample by absolute ethyl alcohol and deionized water at the frequency of 40kHz for 2min to finally obtain a porous polyimide sample with the surface roughness Ra of 0.05-0.1 mu m.
Example 3
And (3) respectively polishing the surface of the porous polyimide material for 1min, 2min and 3min in a running water environment by using 800-mesh, 1500-mesh and 3000-mesh silicon carbide abrasive paper, removing surface impurities and attachments, finishing the surface rough polishing process, and obtaining a porous polyimide sample with a smooth surface. The polishing pad is fixed on a high-speed grinder, 5W of alumina grinding paste is uniformly spread on the surface of the polishing pad, polishing the surface of the porous polyimide for 3min at the rotating speed of 1200r/min, taking off the original polishing pad, then a new polishing pad is arranged on a high-speed grinding machine for fixation, then 3W of alumina grinding paste is evenly spread on the surface of the polishing pad, polishing the surface of the porous polyimide for 4min at the rotating speed of 1200r/min, taking off the original polishing pad, then a new polishing pad is replaced and is placed on a high-speed grinding machine for fixation, then 0.5W of alumina grinding paste is evenly spread on the surface of the polishing pad, polishing the surface of the porous polyimide for 5min at the rotating speed of 1200r/min to finish the fine polishing process, then respectively ultrasonically cleaning the sample by absolute ethyl alcohol and deionized water at the frequency of 40kHz for 2min to finally obtain a porous polyimide sample with the surface roughness Ra of 0.05-0.1 mu m.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A grinding and polishing method of a porous polyimide surface for a high-speed bearing is characterized by comprising the following steps:
s1, respectively polishing the surfaces of the porous polyimide materials by using silicon carbide abrasive paper with different meshes, and polishing the surfaces to be flat;
s2, respectively using alumina grinding pastes with different grinding particle sizes, uniformly spreading the alumina grinding pastes on a polishing pad, and grinding on a high-speed grinder to realize surface fine polishing, wherein the surface of the porous polyimide is mirror-smooth;
and S3, ultrasonically cleaning the surface of the porous polyimide by using absolute ethyl alcohol and deionized water respectively, and cleaning the residual grinding particles.
2. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the mesh range of the silicon carbide abrasive paper in the step S1 is 500-3000 meshes.
3. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: and the silicon carbide abrasive paper of the step S1 is made of a silicon carbide abrasive composite fiber paper base.
4. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the silicon carbide abrasive paper polishing of the step S1 is performed in a running water environment.
5. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the alumina abrasive paste abrasive grain size of step S2 is 0.5W to 3W.
6. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the alumina grinding paste of the step S2 mainly comprises alumina micro powder, hydroxymethyl cellulose, water, alcohol and glycerol.
7. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the rotating speed of the grinding machine in the step S2 is 800 r/min-1200 r/min, and the grinding rotating speeds of the grinding pastes with various meshes are consistent.
8. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the polishing pad of step S2 is a woolen polishing pad, and the main component is synthetic fiber.
9. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the ultrasonic cleaning time of the step S3 is 2-4 min.
10. The method for grinding and polishing the surface of the porous polyimide for the high-speed bearing according to claim 1, wherein: the ultrasonic frequency of the step S3 is 30 kHz-50 kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210693694.6A CN114888646A (en) | 2022-06-18 | 2022-06-18 | Grinding and polishing method for porous polyimide surface for high-speed bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210693694.6A CN114888646A (en) | 2022-06-18 | 2022-06-18 | Grinding and polishing method for porous polyimide surface for high-speed bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114888646A true CN114888646A (en) | 2022-08-12 |
Family
ID=82727983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210693694.6A Pending CN114888646A (en) | 2022-06-18 | 2022-06-18 | Grinding and polishing method for porous polyimide surface for high-speed bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114888646A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978406A (en) * | 2014-05-12 | 2014-08-13 | 大连理工大学 | High-efficiency super-smooth chemical mechanical polishing method for lithium niobate crystal |
| CN111763429A (en) * | 2020-06-08 | 2020-10-13 | 洛阳轴承研究所有限公司 | Porous polyimide composite material for bearing retainer, preparation method of porous polyimide composite material and bearing retainer |
| CN113526459A (en) * | 2021-07-16 | 2021-10-22 | 西南交通大学 | Surface planarization method for micro-scale 3D printing copper/nickel heterogeneous microstructure |
-
2022
- 2022-06-18 CN CN202210693694.6A patent/CN114888646A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978406A (en) * | 2014-05-12 | 2014-08-13 | 大连理工大学 | High-efficiency super-smooth chemical mechanical polishing method for lithium niobate crystal |
| CN111763429A (en) * | 2020-06-08 | 2020-10-13 | 洛阳轴承研究所有限公司 | Porous polyimide composite material for bearing retainer, preparation method of porous polyimide composite material and bearing retainer |
| CN113526459A (en) * | 2021-07-16 | 2021-10-22 | 西南交通大学 | Surface planarization method for micro-scale 3D printing copper/nickel heterogeneous microstructure |
Non-Patent Citations (2)
| Title |
|---|
| М.Г.伊林 Я.А.贝基罗夫: "《液压传动精密零件的制造工艺》", 国防工业出版社 * |
| 江源渊: "摩擦化学作用下接触界面形貌演化对液体润滑性能的影响机理研究" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Comparison of lapping performance between fixed agglomerated diamond pad and fixed single crystal diamond pad | |
| KR20070006663A (en) | Working surface and system for production thereof | |
| CN1785566A (en) | Electric spark-mechanical compound shaping method of metal bindnig agent extra hard abradant sand wheel | |
| CN106281043B (en) | A kind of magnetorheological chemical mechanical polishing liquid and its application method for SiC single crystal piece | |
| Xie et al. | Synergistic effect of micro-textures and MoS2 on the tribological properties of PTFE film against GCr15 bearing steel | |
| Yan et al. | Finishing effects of spiral polishing method on micro lapping surface | |
| Zou et al. | Efficiency of surface texturing in the reducing of wear for tests starting with initial point contact | |
| CN114888646A (en) | Grinding and polishing method for porous polyimide surface for high-speed bearing | |
| CN106002663B (en) | A kind of laminated freezing concretion abrasive polishing pad and preparation method | |
| Sabri et al. | A study on the influence of bond material on honing engine cylinder bores with coated diamond stones | |
| CN114838054A (en) | Self-lubricating bearing based on bionic micro-texture and self-lubricating composite material filling method | |
| Wang et al. | Advance on surface finishing technology of precision bearing cylindrical rollers | |
| CN111531411B (en) | Precision processing method for aluminum-based diamond composite material | |
| Raffles et al. | Electrolytic in-process dressing superfinishing of spherical bearings using metal—resin bond ultra-fine CBN wheels | |
| Chen et al. | Loose abrasive truing and dressing of resin bond diamond cup wheels for grinding fibre optic connectors | |
| JP2015077210A (en) | Surface treatment sheet for wiping surface of workpiece | |
| Murashima et al. | New droplet removal polishing method for diamond-like carbon with carbon fiber brush | |
| Jianxiu et al. | Study on lapping paste of 6H–SiC single-crystal substrate in tribochemical mechanical lapping | |
| Shen et al. | Studies on friction and wear properties of surface produced by ultrasonic vibration-assisted milling | |
| Feng et al. | Polishing investigation on zirconia ceramics using magnetic compound fluid slurry | |
| Hwang et al. | High Speed Grinding of Silicon Nitride With Electroplated Diamond Wheels: I—Wear and Wheel Life | |
| Choi et al. | Pad surface and coefficient of friction correlation analysis during friction between felt pad and single-crystal silicon | |
| CN113878411B (en) | Positioning fixture for rotary polishing of R surface of sliding blade of compressor and polishing method thereof | |
| Zhang et al. | Experiment research on grinding of optical glass with indigenously developed monolayer brazed diamond grinding wheel | |
| Chen et al. | Performance assessment of ultrathin sapphire wafer polishing with layer stacked clamping (LSC) method |
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 |