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

Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof

A self-lubricating coating and brush-type sealing technology, which is applied in the coating, metal material coating process, fusion spraying, etc., can solve the problems of PbO solid lubricant application limitations, reduce friction coefficient, improve surface performance, The effect of improving usability

Inactive Publication Date: 2012-06-20
GRIPM ADVANCED MATERIALS CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that PbO can show good lubricity in the range of 480-850°C, but due to international restrictions on lead-containing materials, the application of PbO solid lubricants in coatings is also limited

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
  • Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof
  • Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof
  • Wear resistant self-lubricating coating for brush type sealed track and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare a wear-resistant self-lubricating coating on a brush-type sealed raceway, the method is as follows: take WC-12Co powder and Ag powder as raw materials, and the weight of Ag powder in the raw materials used accounts for 10% of the total weight of WC-12Co powder and Ag powder. The raw material is made into composite powder by spray granulation process, and the composite powder with a particle size of 15-45 μm is screened out, and sprayed on the surface of the brush-type sealing runway by supersonic flame spraying, then a wear-resistant self- Lubricant coating.

[0017] In the wear-resistant self-lubricating coating for brush seal raceways prepared by the above method, the components and their weight percentages are as follows: Ag: 9.8%, Co: 10.8%, C: 4.5%, W: 74.9%.

[0018] The bonding strength of the wear-resistant self-lubricating coating prepared in this example and the substrate is greater than 60MPa, and the average value of microhardness HV 0.3 The coeffic...

Embodiment 2

[0020] Prepare a wear-resistant self-lubricating coating on a brush-type sealed track, the method is as follows: take WC-12Co powder and Ag powder as raw materials, and the weight of Ag powder in the raw materials used accounts for 15% of the total weight of WC-12Co powder and Ag powder. The raw material is made into composite powder by spray granulation process, and the composite powder with a particle size of 15-45 μm is screened out, and sprayed on the surface of the brush-type sealing runway by supersonic flame spraying, then a wear-resistant self- Lubricant coating.

[0021] In the wear-resistant self-lubricating coating for brush seal raceways prepared by the above method, the components and their weight percentages are as follows: Ag: 15.3%, Co: 10.2%, C: 4.2%, W: 70.3%.

[0022] The wear-resistant self-lubricating coating prepared in this example has a bonding strength greater than 60 MPa and an average value of microhardness HV 0.3 The coefficient of friction of the ...

Embodiment 3

[0024] The wear-resistant self-lubricating coating is prepared on the brush-type sealed track, and the method is as follows: take WC-12Co powder and Ag powder as raw materials, and the Ag powder weight accounts for 18% of the total weight of WC-12Co powder and Ag powder in the raw materials used, and the above-mentioned The raw material is made into composite powder by spray granulation process, and the composite powder with a particle size of 15-45 μm is screened out, and sprayed on the surface of the brush-type sealing runway by supersonic flame spraying, then a wear-resistant self- Lubricant coating.

[0025] In the wear-resistant self-lubricating coating for brush seal raceways prepared by the above method, the components and their weight percentages are as follows: Ag: 17.9%, Co: 9.8%, C: 4.1%, W: 68.2%.

[0026] The microscopic morphology of the thermal spraying composite powder of this embodiment is as follows: figure 1 As can be seen from the figure, the microscopic m...

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
particle sizeaaaaaaaaaa
melting pointaaaaaaaaaa
friction coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a wear resistant self-lubricating coating for a brush type sealed track and a preparation method thereof, belonging to the technical field of a coating for a rotor track in a brush type sealed structure, and a preparation method thereof. The coating of the invention comprises the following components in weight percent: 10-20% of Ag, 9-11% of Co, 3.8-6% of C and the balanceW. The preparation method taking WC-12Co powder and Ag powder as raw materials comprises the following steps, preparing the raw materials into composite powder by a spray prilling process, screening out the composite powder with the particle size of 15-45 mu m, and spraying the composite powder on the surface of the brush type sealed track by supersonic speed flame spray coating, thereby preparing the wear resistant self-lubricating coating on the brush type sealed track, wherein the weight of the Ag powder in the raw materials accounts for 10-20% of the total weight of the WC-12Co powder andthe Ag powder. The coating has moderate microhardness, good bonding strength, and good wear resistant anti-friction performance within the temperature range from room temperature to 600 DEG C.

Description

technical field [0001] The invention belongs to the technical field of a coating for a rotor raceway in a brush-type seal structure and its preparation, and in particular relates to a wear-resistant self-lubricating coating for a brush-type seal raceway and a preparation method thereof. Background technique [0002] With the development of aerospace and space technology, and many harsh working conditions have exceeded the use limit of lubricating oil or grease, the traditional soft metal and other solid lubricating powders are used as anti-friction coatings, which have low strength and poor wear resistance. Can not meet the comprehensive requirements of performance. In this case, solid self-lubricating composite materials came into being. The composition of this composite material can be conveniently designed according to the requirements of the working conditions. On the one hand, it has high strength and hardness, which can improve the wear resistance of the contact frict...

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): C09D5/46C23C4/06C23C4/129
Inventor 付东兴汪礼敏张景怀杨中元李学锋张敬国闫世凯陶凯张晓囡张羽
Owner GRIPM ADVANCED MATERIALS 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