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High-temperature-resistant high-load self-lubricating bearing surface structure and manufacturing method thereof

A bearing surface and manufacturing method technology, applied in the direction of chemical instruments and methods, lamination, layered products, etc., can solve the problems of poor thermal conductivity, poor wear resistance and creep resistance, large thermal expansion coefficient, etc., and achieve load-carrying performance Good, improved performance, reduced linear expansion coefficient

Inactive Publication Date: 2014-11-19
WUJIANG MINGYANG NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of polytetrafluoroethylene are small friction coefficient and excellent chemical resistance, but its disadvantages are poor thermal conductivity, large thermal expansion coefficient, poor wear resistance and creep resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The technical solution adopted in the present invention is a bearing surface structure with high temperature resistance and high load self-lubrication. The bearing surface structure is a layered structure. The bearing surface structure is formed by superimposing the bottom layer, middle layer and surface layer from bottom to top. Cold-rolled steel plate, the middle layer is 0.22mm thick tin bronze powder, and the surface layer is 0.035mm thick modified polytetrafluoroethylene material layer. The components of the modified polytetrafluoroethylene material include: 8.5 parts by mass of molybdenum disulfide, 40 parts by mass of polyphenylene, and 62 parts by mass of polytetrafluoroethylene.

Embodiment 2

[0026] High temperature resistant and high load self-lubricating bearing surface structure. The bearing surface structure is a layered structure. The bearing surface structure is composed of bottom layer, middle layer and surface layer from bottom to top. The bottom layer is 08F cold-rolled steel plate with a thickness of 1.5mm. The middle layer is tin bronze powder with a thickness of 0.15 mm, and the surface layer is a modified polytetrafluoroethylene material layer with a thickness of 0.02 mm. The components of the modified polytetrafluoroethylene material include: 8 parts by mass of molybdenum disulfide, 45 Polyphenylene in parts by mass, polytetrafluoroethylene in 55 parts by mass.

Embodiment 3

[0028] High temperature resistant and high load self-lubricating bearing surface structure. The bearing surface structure is a layered structure. The bearing surface structure is composed of bottom layer, middle layer and surface layer superimposed from bottom to top. The bottom layer is 08F cold-rolled steel plate with a thickness of 2.5mm. The middle layer is tin bronze powder with a thickness of 0.28 mm, and the surface layer is a modified polytetrafluoroethylene material layer with a thickness of 0.05 mm. The components of the modified polytetrafluoroethylene material include: 10 parts by mass of molybdenum disulfide, 35 Polyphenylene in parts by mass, polytetrafluoroethylene in 75 parts by mass.

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Abstract

The invention discloses a high-temperature-resistant high-load self-lubricating bearing surface structure and a manufacturing method thereof. The bearing surface structure is a laminated structure, is formed by overlapping a bottom layer, a middle layer and a surface layer from bottom to top, wherein the bottom layer is a 08F cold-rolled steel plate which is 1.5-2.5 millimeters in thickness; the middle layer is made of tin bronze powder, and is 0.15-0.28 millimeter in thickness; and the surface layer is a modified polytetrafluoroethylene material layer which is 0.02-0.05 millimeter in thickness. Through the method, pure polytetrafluoroethylene is turned into modified polytetrafluoroethylene, the bearing surface structure can meet the requirement of a dry friction condition, the working temperature can be up to 300 DEG C, the friction coefficient is 0.2, and the grinding width is less than 4 millimeters; compared with the pure polytetrafluoroethylene, the modified polytetrafluoroethylene has the advantages that the pressure resistance is improved by 5-10 times, the wear resistance is improved by 1,000 times, the linear expansion coefficient is lowered by 80 percent, and the heat conductivity is increased by 5 times; and the high-temperature-resistant high-load self-lubricating bearing surface structure can be widely applied to the field of bearings.

Description

technical field [0001] The invention relates to a bearing surface structure and a manufacturing method thereof, in particular to a high-temperature-resistant, high-load self-lubricating bearing surface structure and a manufacturing method thereof. Background technique [0002] Dry friction bearings are a type of bearings that do not need to be supplemented with lubricating oil from the outside during operation. Dry friction bearing materials can be roughly divided into three categories: plastics, metals and ceramics. The plastic category is further divided into two types of bearings: single plastic and steel back-plastic composite materials. [0003] The most widely used plastic bearing material is polytetrafluoroethylene bearing. The advantages of polytetrafluoroethylene are small friction coefficient and excellent chemical resistance, but its disadvantages are poor thermal conductivity, large thermal expansion coefficient, poor wear resistance and creep resistance. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/082B32B15/20B32B15/18B32B37/15B32B38/18B32B37/10
Inventor 王明祥赵虎
Owner WUJIANG MINGYANG NEW MATERIALS TECH
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