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Bearing bush with functionally graded bionic texture as well as preparation method and water-lubricated bearing thereof

A technology of bionic texture and functional gradient, applied in the direction of shafts and bearings, bearing components, bearing bushings, etc., to achieve the effects of optimizing friction and lubrication performance, improving wettability, and improving surface morphology

Pending Publication Date: 2020-08-14
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, there is no previous report on the application of the surface texture of the lip and waxy regions of Nepenthes to the friction reduction of water-lubricated bearing materials; Improvement of hydrophilicity and surface morphology, and then synergistically optimize its tribological properties

Method used

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  • Bearing bush with functionally graded bionic texture as well as preparation method and water-lubricated bearing thereof
  • Bearing bush with functionally graded bionic texture as well as preparation method and water-lubricated bearing thereof
  • Bearing bush with functionally graded bionic texture as well as preparation method and water-lubricated bearing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a bearing pad with a functionally graded bionic texture, and the surface is designed and arranged with a bionic texture capable of realizing functional gradient.

[0040] Such as Figures 2a-2g As shown, the biomimetic texture mainly refers to the surface texture of the lip and waxy area of ​​Nepenthes. The hydrophobic surface texture is formed, and the parameter setting and structure optimization that are beneficial to the friction reduction and lubrication of the bearing are carried out.

[0041] The crescent-shaped hydrophobic surface texture 8 is arranged on the two ends 5 of the bearing bush to realize the directional transport of the lubricant from the end to the middle; the radial ridge-shaped hydrophilic surface texture is arranged on the middle part 6 of the bearing bush, It can facilitate the establishment of the hydrodynamic lubrication state in the middle area of ​​the bearing pad where the lubricating water film pressure is the large...

Embodiment 2

[0046] As shown in Figure 1, a water-lubricated bearing with a functionally graded bionic texture bearing pad in this embodiment has the same structure as a traditional sliding bearing, including an outer ring bushing 1, rolling elements 2 and retaining bearings from outside to inside. Frame 3, inner ring bearing 4; the surface of the inner ring bearing 4 is designed and arranged with a bionic texture that can realize functional gradient.

[0047] The bearing pad 4 of the inner ring adopts the bearing pad with a functionally graded bionic texture as described in Embodiment 1, and the specific structural design will not be repeated here.

Embodiment approach

[0049] This example provides a method for preparing a bearing with a functionally graded biomimetic texture, as a preferred implementation, including the following steps:

[0050] (1) Preparation and surface treatment of UHMWPE matrix material: Using a small laboratory injection molding machine, the UHMWPE powder material is heated, compressed, plasticized, injected, cooled, etc. to obtain a block-shaped workpiece of UHMWPE, and then cut into pieces , grinding, polishing and other steps to obtain a workpiece with a semicircular shape and a width of 1 / 5 of the actual width of the bearing.

[0051] (2) Micro-nano processing of bionic texture: using ultraviolet soft mold nanoimprinting equipment, after template processing, pattern transfer, substrate processing and other steps, the surface texture with shape and size parameters meeting the requirements is processed on the inner surface of the workpiece. The structures are respectively a crescent-shaped hydrophobic texture 8, a fi...

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Abstract

The invention discloses a bearing bush with a functionally graded bionic texture as well as a preparation method and a water lubricated bearing thereof. The bearing bush is characterized in that the surface of the bearing bush is provided with the bionic texture capable of realizing functional gradient, and the bionic texture comprises a radial ridge-shaped hydrophilic surface texture imitating acommon nepenthes lip and a crescent hydrophobic surface texture imitating a waxy region. According to the bearing bush, antifriction between the bearing bush and two sliding surfaces on a shaft is realized, and a lubricant is directionally conveyed from the end part to the middle part, so that the lubricating state of the middle area of an inner ring bearing bush is improved.

Description

technical field [0001] The invention belongs to the technical field of tribology and surface engineering, and relates to the structural design of a water-lubricated bearing, in particular to a bearing bush with a functional gradient bionic texture, a preparation method, and a water-lubricated bearing. Background technique [0002] Water-lubricated bearings are often lubricated with water or water-based lubricants, mainly including outer ring bushings, rolling elements, cages, and inner ring bearing pads. The inner ring bearing pads are mostly non-metallic materials, which are uniquely green and environmentally friendly. Advantages, mainly used in ship stern bearings, water pumps, water turbines and other occasions. The selection of bearing bush materials for water-lubricated bearings has an important impact on the lubricating performance, working reliability and service life of water-lubricated bearings. In recent years, the choice of polymer or composite materials for bear...

Claims

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Application Information

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IPC IPC(8): F16C33/64F16C33/58B29D33/00
CPCB29D33/00F16C33/58F16C33/64
Inventor 李云凯王优强罗恒菅光霄于晓
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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