Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An alloy-fluororesin double-layer self-lubricating and wear-resistant composite material, its preparation method and friction pair

A composite material and fluororesin technology, which is applied in the direction of lubricating compositions, mechanical equipment, shafts and bearings, etc., can solve problems affecting relative spatial position, precision and mechanical operation, and large wear

Active Publication Date: 2022-06-03
BEIJING WENLI TECH CO LTD
View PDF20 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the solid self-lubricating materials in the prior art have a large amount of wear after long-term use, especially when used in bearings. The wear amount of the friction material directly affects the relative spatial positions of the various components, resulting in problems in precision and mechanical operation. question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An alloy-fluororesin double-layer self-lubricating and wear-resistant composite material, its preparation method and friction pair

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention provides a preparation method of an alloy-fluororesin double-layer self-lubricating wear-resistant composite material, comprising the following steps:

[0025] A) pretreatment on the surface of the alloy substrate to obtain an alloy substrate with a surface roughness of Ra;

[0026] B) applying the fluororesin mixture on the surface of the alloy substrate with a roughness of Ra, and performing stepped vacuum sintering to obtain an alloy-fluororesin double-layer self-lubricating and wear-resistant composite material;

[0027] The fluororesin mixture includes first fluororesin particles having a particle diameter of 0.5 to 1.2 times Ra and second fluororesin particles having a particle diameter of 2.5 to 4.0 times Ra.

[0028] In the present invention, the alloy substrate is preferably a copper alloy, more preferably a wear-resistant copper alloy such as tin bronze, copper-nickel-tin, the copper alloy substrate has a thickness of 0.05-5 mm, and the Sn conten...

Embodiment 1

[0052] The copper alloy ZCuSn5Pb5Zn5 is made into a copper strip with a length of 50 mm, a width of 20 mm and a thickness of 0.1 mm. The surface of the copper strip is rolled to obtain a porous porous structure on the surface, and the surface roughness of the ruler is Ra 12.5.

[0053] Degreasing and ultrasonic cleaning, put into graphite mold after drying; Dissolve tetrafluoroethylene and hexafluoropropylene copolymer (FEP) in polytetrafluoroethylene (PTFE) suspension, mass ratio 1:1, polytetrafluoroethylene The average particle size of (PTFE) is 10 microns, and the average particle size of tetrafluoroethylene and hexafluoropropylene copolymer (FEP) is 30 microns. After thorough stirring and mixing, a paste-like mixture is formed; the mixture is pressed into the surface of the copper alloy strip by cold pressing. The layer material is first dried in a vacuum sintering furnace to remove moisture and organic solvents. The drying temperature is 180 ° C, the drying time is 2 hours...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing an alloy-fluororesin double-layer self-lubricating and wear-resistant composite material, comprising the following steps: A) pretreating the surface of the alloy matrix to obtain an alloy matrix with a surface roughness of Ra; B) adding fluorine The resin mixture is applied on the surface of the alloy matrix with a roughness of Ra, and stepwise vacuum sintering is carried out to obtain an alloy-fluororesin double-layer self-lubricating wear-resistant composite material; the fluororesin mixture includes particles with a particle size of 0.5 to 1.2 times Ra The first fluororesin particles and the second fluororesin particles whose particle size is 2.5 to 4.0 times Ra. In the composite material prepared by the preparation method of the present invention, the fluororesin coating and the alloy matrix have higher bonding force and better wear resistance, and the wear volume is small after long-term operation. The invention also provides an alloy-fluororesin double-layer self-lubricating and wear-resistant composite material and a friction pair.

Description

technical field [0001] The invention belongs to the technical field of friction materials, and in particular relates to an alloy-fluororesin double-layer self-lubricating and wear-resistant composite material, a preparation method thereof and a friction pair. Background technique [0002] In recent years, with the development of science and technology, higher and higher requirements have been placed on the performance of various equipment and components. Friction and wear is a ubiquitous natural phenomenon. The statistics of the World Tribology Society show that friction loses more than 1 / 3 of the world's primary energy, and the annual loss caused by wear and tear accounts for about 1% of the gross national product. In order to prolong the service life and save materials and energy, there is an urgent need to solve the problems of friction, wear and lubrication protection in many fields. [0003] There are 4 kinds of lubricating materials, gas lubricant, fluid (mainly oil),...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00F16C33/04F16C33/02C10N30/06
CPCC10M161/00F16C33/04F16C33/02C10M2201/05C10M2213/062C10M2213/06
Inventor 华青松仙存妮邱瑞林魏建新
Owner BEIJING WENLI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com