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A Porous Metal Matrix Composite Bearing Based on Elastohydrodynamic Lubrication

A composite material and porous metal technology, applied in the field of bearings, can solve the problems of lack of elastohydrodynamic lubrication and limit the bearing capacity of ball bearings, and achieve the effects of improving thermal conductivity, increasing bearing capacity, and reducing mechanical friction loss

Active Publication Date: 2020-06-16
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a porous metal matrix composite material bearing based on elastohydrodynamic lubrication, which solves the problem that in the prior art, the sphere, outer ring and inner ring are rigid structures and do not have the characteristics of elastohydrodynamic lubrication, which limits the bearing capacity of the ball bearing The problem

Method used

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  • A Porous Metal Matrix Composite Bearing Based on Elastohydrodynamic Lubrication
  • A Porous Metal Matrix Composite Bearing Based on Elastohydrodynamic Lubrication
  • A Porous Metal Matrix Composite Bearing Based on Elastohydrodynamic Lubrication

Examples

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Effect test

Embodiment 1

[0028] A porous metal matrix composite bearing based on elastohydrodynamic lubrication, specifically as Figure 1~3 As shown, it includes a bearing inner ring 1, a rolling ball cage 2 and a bearing outer ring 3 arranged in sequence from inside to outside, and a number of rolling balls evenly distributed around the bearing inner ring 1 are installed in the rolling ball cage 2 4, and the rolling ball 4 includes a spherical matrix 41 with a porous surface, and the outer surface of the spherical matrix 41 is wrapped with an elastic reinforcement layer 42 . The bearing inner ring 1, rolling ball cage 2, bearing outer ring 3 and rolling balls 4 are assembled according to the deep groove ball bearing structure in the prior art or other bearing components with balls.

[0029] The spherical base 41 is a metal ball or an alloy ball, such as a copper ball, a shot ball, a stainless steel ball, or a titanium alloy ball. The elastic reinforcement layer 42 is made of rubber, ceramic or resi...

Embodiment 2

[0040] A preparation method of the spherical base 41 is specifically implemented according to the following steps:

[0041] Step 1: Soak the spherical matrix 41 in alkali solution, then ultrasonically treat at 60°C, wash, and dry at 100°C to obtain the pretreated spherical matrix A;

[0042] Wherein, the lye is a sodium hydroxide solution with a mass concentration of 10%;

[0043] Step 2, place the pretreated spherical matrix A in step 1 in a hydrogen furnace, and keep it warm at 300°C for 10 hours, and obtain the pretreated spherical matrix B after the heat preservation is completed;

[0044] Step 3, compound a layer of elastic reinforcement material (ceramic) on the outer surface of the pretreatment ball base B in step 2 to form an elastic reinforcement layer 42 to obtain a spherical base 41, as follows: the pretreatment ball base B is packed into a centrifuge In the casting machine, the molten elastic reinforcement material (ceramic) is used for centrifugal casting, and afte...

Embodiment 3

[0046] A preparation method of the spherical base 41 is specifically implemented according to the following steps:

[0047] Step 1: Soak the spherical matrix 41 in alkali solution, then ultrasonically treat it at 35°C, wash it, and dry it at 60°C to obtain the pretreated spherical matrix A;

[0048] Wherein, the lye is a 10% sodium hydroxide solution with a mass concentration of thiourea dioxide added, and the mass fraction of thiourea dioxide in the sodium hydroxide solution is 0.05%;

[0049] Step 2, put the pretreated spherical matrix A in step 1 in a hydrogen furnace, and keep it warm at 400°C for 6 hours, and obtain the pretreated spherical matrix B after the heat preservation is completed;

[0050] Step 3, compound a layer of elastic reinforcement material (resin) on the outer surface of the pretreatment spherical matrix B in step 2 to form an elastic reinforcement layer 42 to obtain a spherical matrix 41, specifically as follows: put the pretreatment spherical matrix B ...

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Abstract

The invention belongs to the technical field of bearings and particularly relates to a porous metal matrix composite material bearing based on elastohydrodynamic lubrication. The porous metal matrix composite material bearing comprises a bearing inner ring, a rolling ball retainer and a bearing outer ring which are sequentially arranged from inside to outside, wherein the rolling ball retainer isinternally provided with a plurality of rolling balls which are uniformly distributed around the bearing inner ring; in addition, each rolling ball comprises a spherical matrix with a porous surface;an elastic reinforcement layer wraps the outer surface of each spherical matrix. According to the porous metal matrix composite material bearing disclosed by the invention, a high-pressure area is formed on micro contact area by adopting the spherical matrixes with the porous surface and the elastic reinforcement layers and an elastohydrodynamic lubrication principle; by adding a lubricating area,mechanical friction loss between the surfaces of rigid parts is reduced, and bearing capacity of the bearing is improved.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a porous metal matrix composite material bearing based on elastohydrodynamic lubrication. Background technique [0002] Elastohydrodynamic lubrication, also called elastohydrodynamic lubrication, is a lubrication with variable viscosity coefficient lubricating film and elastically deformable contact surface. For example, the lubrication when the gear meshes and the lubrication between the ball and the inner and outer rings of the ball bearing. Their common feature is that the load acts on a small contact area to form a high-pressure zone, which changes the viscosity coefficient of the lubricant and elastically deforms the contact surface. The advantage of elastohydrodynamic lubrication is to reduce the mechanical friction loss between the surfaces of rigid parts by increasing the lubricating area. The visco-pressure effect and elastic deformation effect of elastohy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/32F16C33/38F16C33/58F16C33/66F16C27/04F16C27/06F16C33/00
CPCF16C27/04F16C27/066F16C33/00F16C33/32F16C33/3887F16C33/583F16C33/6681F16C2202/08F16C2204/00F16C2206/00F16C2208/10F16C2220/06F16C2220/70
Inventor 胡瑞许春霞闫肖肖何雪龙燕松山刘佐民熊乐江剑峰
Owner NANCHANG INST OF TECH
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