CN114251365B - Method for improving bearing wear resistance of friction surface of bionic water-lubricated bearing - Google Patents
Method for improving bearing wear resistance of friction surface of bionic water-lubricated bearing Download PDFInfo
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- CN114251365B CN114251365B CN202111659795.3A CN202111659795A CN114251365B CN 114251365 B CN114251365 B CN 114251365B CN 202111659795 A CN202111659795 A CN 202111659795A CN 114251365 B CN114251365 B CN 114251365B
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- bionic
- bearing
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- friction surface
- concave
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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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
- F16N—LUBRICATING
- F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a method for improving the bearing wear resistance of a friction surface of a bionic water-lubricated bearing. According to the invention, the plurality of bionic concave structures are distributed on the friction surface of the water lubrication bearing, and the anti-drag material is filled, coated or fixed in the bionic concave structures, so that the flow speed of a lubricating medium (water) in the concave structures can be increased, the fluid dynamic pressure is further increased, the bearing capacity of a lubricating film is improved, and the high-efficiency wear resistance of the water lubrication bearing under a high-bearing condition is realized.
Description
Technical Field
The invention belongs to the technical field of mechanical design and manufacture, and particularly relates to a method for improving the bearing wear resistance of a friction surface of a bionic water-lubricated bearing.
Background
The water-lubricated bearing is widely applied to the fields of ship tail shafts, nuclear pumps, hydraulic generators, centrifugal pumps and the like because of the advantages of environmental protection, no need of complex sealing structures and the like. However, compared with oil, water has lower viscosity, and a hydrodynamic lubrication film with high bearing capacity is difficult to form during the bearing operation, so that the bearing is easy to wear, and the service life of the bearing is seriously reduced.
The phenomenon that lubrication is regulated and controlled through a surface/interface structure so as to realize wear resistance generally exists in the organisms in the nature, and most of lubricating media are aqueous solutions. The bionic structure is constructed on the surface of the water-lubricated bearing, so that the lubrication state can be improved, the friction resistance is reduced, and the abrasion is reduced. However, the working conditions of the biological and mechanical surface/interface are different, and due to the limitation of the manufacturing technology, the structure of the biological surface/interface is difficult to be completely transferred and copied to the mechanical surface, which will affect the formation of the high-bearing fluid dynamic pressure lubricating film and the realization of the bionic wear-resisting function.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for improving the bearing wear resistance of the friction surface of the bionic water-lubricated bearing, wherein a plurality of bionic concave structures are distributed on the friction surface of the water-lubricated bearing, and a resistance-reducing material is filled, coated or fixed in the bionic concave structures, so that the flow speed of a lubricating medium (water) in the concave structures can be increased, the fluid dynamic pressure is increased, the bearing capacity of a lubricating film is improved, and the high-efficiency wear resistance of the water-lubricated bearing is realized.
The purpose of the invention is realized by the following technical scheme: a method for improving the bearing wear resistance of the friction surface of a bionic water-lubricated bearing comprises the steps of distributing a plurality of bionic concave structures on the friction surface of the water-lubricated bearing, and filling, coating or fixing a resistance reducing material in the bionic concave structures.
Further, the water-lubricated bearing is made of a metal material, a ceramic material or a polymer material; the metal material comprises babbitt metal, the ceramic material comprises silicon carbide ceramic, alumina ceramic or silicon nitride ceramic, and the polymer material comprises ultra-high molecular weight polyethylene, sialon, phylon or nitrile rubber.
Furthermore, the total area of the bionic concave structure accounts for 0.1-50% of the area of the friction surface of the bearing, and the depth of the concave structure is 5-10 cm.
Further, the drag reduction material refers to a material capable of reducing the flow resistance of water in the bionic concave structure, and comprises a fluorine-containing polymer or a hydrophobic/super-hydrophobic material.
Further, the thickness of the drag reduction material filled, coated or fixed in the bionic concave structure is smaller than the depth of the concave structure.
The invention has the beneficial effects that: according to the invention, the plurality of bionic concave structures are distributed on the friction surface of the water-lubricated bearing, and the anti-drag material is filled, coated or fixed in the bionic concave structures, so that the flow speed of a lubricating medium (water) in the concave structures can be increased, the fluid dynamic pressure in the region outside the concave structures can be further increased based on the flow continuous condition, the bearing capacity of a water lubricating film (the water lubricating film is naturally formed on the friction interface under the condition that the lubricating medium (water) exists) is improved, and the high-efficiency wear resistance of the water-lubricated bearing under the high-bearing condition is realized.
Drawings
Fig. 1 is a water-lubricated bearing structure of embodiment 1 of the invention;
fig. 2 is a water lubricated bearing structure of embodiment 2 of the invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
A method for improving the bearing wear resistance of the friction surface of a bionic water-lubricated bearing comprises the steps that a plurality of bionic concave structures 2 are distributed on the friction surface of a water-lubricated bearing 1, the bionic concave structures are trapezoidal groove structures in the embodiment, as shown in figure 1, the length of the upper bottom (close to the axis of the water-lubricated bearing) is 2mm, the length of the lower bottom (far away from the axis of the water-lubricated bearing) is 1mm, the depth of the bionic concave structures is 1mm, and the total area of the bionic concave structures accounts for 10% of the area of the friction surface of the bearing; polyvinylidene fluoride drag reduction materials are filled in the bionic concave structure, and the filling thickness is 0.5mm.
The water-lubricated bearing is made of a metal material, a ceramic material or a polymer material; the metal material comprises babbitt metal, the ceramic material comprises silicon carbide ceramic, alumina ceramic or silicon nitride ceramic, and the polymer material comprises ultra-high molecular weight polyethylene, sialon, phylon or nitrile rubber.
Example 2
A method for improving the bearing wear resistance of the friction surface of a bionic water-lubricated bearing comprises the steps that a plurality of bionic concave structures 2 are distributed on the friction surface of a water-lubricated bearing 1, the bionic concave structures in the embodiment are cylindrical structures with the same upper bottom surface and lower bottom surface, as shown in figure 2, the width of the bionic concave structures is 200 micrometers, the depth of the bionic concave structures is 1mm, and the total area of the bionic concave structures accounts for 15% of the area of the friction surface of the bearing; and (3) spraying a hydrophobic/super-hydrophobic material, such as an epoxy resin/silicon dioxide composite material, a polydimethylsiloxane/titanium dioxide composite material and the like, in the groove structure in the bionic concave structure, wherein the spraying thickness is 100 micrometers.
The drag reduction material is a material capable of reducing the flow resistance of water in the bionic concave structure, and is not limited to the materials listed in the above embodiments.
The thickness of the drag reduction material filled, coated or fixed in the bionic concave structure is smaller than the depth of the concave structure.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (1)
1. A method for improving the bearing wear resistance of the friction surface of a bionic water-lubricated bearing is characterized in that a plurality of bionic concave structures are distributed on the friction surface of the water-lubricated bearing, and drag reduction materials are filled, coated or fixed in the bionic concave structures;
the water-lubricated bearing is made of a metal material, a ceramic material or a polymer material; the metal material comprises Babbitt, the ceramic material comprises silicon carbide ceramic, aluminum oxide ceramic or silicon nitride ceramic, and the polymer material comprises ultra-high molecular weight polyethylene, sialon, phylon or nitrile rubber;
the drag reduction material is a material capable of reducing the flow resistance of water in the bionic concave structure and comprises a fluorine-containing polymer or a hydrophobic/super-hydrophobic material;
the bionic concave structure is a trapezoidal groove structure or a cylindrical structure with the same upper and lower bottom surfaces;
the upper bottom of the trapezoid groove structure is 2mm long, the lower bottom of the trapezoid groove structure is 1mm long, the depth of the trapezoid groove structure is 1mm, and the total area of the bionic groove structure accounts for 10% of the friction surface area of the bearing; filling a polyvinylidene fluoride anti-drag material in the bionic concave structure, wherein the filling thickness is 0.5mm;
the width and the depth of the cylindrical structure with the same upper bottom surface and lower bottom surface are 200 mu m and 1mm, and the total area of the bionic concave structure accounts for 15 percent of the area of the friction surface of the bearing; and (3) spraying a hydrophobic/super-hydrophobic material in the groove structure in the bionic concave structure, wherein the hydrophobic/super-hydrophobic material comprises an epoxy resin/silicon dioxide composite material or a polydimethylsiloxane/titanium dioxide composite material, and the spraying thickness is 100 micrometers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659795.3A CN114251365B (en) | 2021-12-30 | 2021-12-30 | Method for improving bearing wear resistance of friction surface of bionic water-lubricated bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659795.3A CN114251365B (en) | 2021-12-30 | 2021-12-30 | Method for improving bearing wear resistance of friction surface of bionic water-lubricated bearing |
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| CN114251365A CN114251365A (en) | 2022-03-29 |
| CN114251365B true CN114251365B (en) | 2022-11-22 |
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| CN115873652B (en) * | 2022-11-01 | 2024-05-24 | 中国人民解放军海军工程大学 | Water lubrication material surface structure based on bionic hydrophilic principle |
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| ATE15698T1 (en) * | 1981-06-30 | 1985-10-15 | Suisse Horlogerie Rech Lab | PROCESS FOR MAKING A CORROSION RESISTANT SOLID LUBRICANT COATING. |
| CN102226459B (en) * | 2011-06-03 | 2013-03-13 | 江苏大学 | Method for self-lubricating treatment of laser micro-texture of bearing |
| CN104632893A (en) * | 2014-12-25 | 2015-05-20 | 江南大学 | Porous hydrostatic pressure bearing structure based on hydrophobic interfaces |
| CN206144989U (en) * | 2016-05-31 | 2017-05-03 | 武汉理工大学 | Water -lubricated bearing that makes an uproar falls in damping |
| CN106763147A (en) * | 2017-01-09 | 2017-05-31 | 重庆大学 | NEW ADAPTIVE water lubricating thrust bearing |
| CN107387553B (en) * | 2017-07-27 | 2019-02-19 | 燕山大学 | The Prefilled self-lubricating knuckle bearing of textile type Surface Texture friction |
| CN208106970U (en) * | 2018-01-22 | 2018-11-16 | 启东海大聚龙新材料科技有限公司 | Lubricate bearing |
| CN109764063B (en) * | 2019-03-13 | 2020-05-19 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Water-lubricated bearing with large damping longitudinal differential stiffness for ship |
| CN111536161A (en) * | 2020-05-22 | 2020-08-14 | 青岛理工大学 | Bearing bush with function gradient bionic texture, preparation method and water-lubricated bearing |
| CN113399231A (en) * | 2021-06-29 | 2021-09-17 | 西南交通大学 | Bionic structured staggered sliding antifriction and wear-resistant surface and preparation method thereof |
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