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Nano steel-based self-lubricating composite and preparation method thereof

A composite material and nano-steel technology, applied in the field of materials, can solve the problems of low bonding strength, high friction coefficient, short service life, etc., and achieve the effects of high friction and wear performance, high mechanical strength, and good wear resistance.

Inactive Publication Date: 2019-11-15
南京晶质新型复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually parts are lubricated by lubricating oil. For the occasions with harsh working conditions, the traditional liquid lubrication method has been difficult to meet the requirements.
Especially in industries that require oil-free lubrication such as food, pharmaceuticals, water conservancy, textiles, and aviation machinery, self-lubricating materials have become a new type of material in the field of lubrication. The current steel-based self-lubricating composite materials have low bonding strength and low friction. High coefficient, short service life and other shortcomings, so a more effective technology is urgently needed. This technology needs to have low friction and wear coefficient, high bonding strength, long service life, simplified production process, and low cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Ultrasonic cleaning is performed on the steel base for 40 minutes, and then the steel base is soaked in a mixture of concentrated sulfuric acid and water for 20 minutes, where the specific gravity of concentrated sulfuric acid and water is 1:1, and then the steel base is put into Alkaline washing in a 5% strong alkali aqueous solution, soaking time is 20min, the strong alkali aqueous solution is sodium hydroxide solution, and then the steel base is washed 5 times with deionized water, and the steel base is dried in a vacuum dryer Drying, the temperature of the dryer is set to 90°C, and the time is 60 minutes. After drying, the steel substrate is subjected to high-energy shot peening and nano-treatment. The shot diameter is 0.5mm, the shot peening speed is 60m / s, and the shot peening time is 30 minutes;

[0017] 2) According to the ratio of mass percentage, 20% of nano aluminum oxide, 50% of polytetrafluoroethylene, 20% of carbon fiber, and 10% of molybdenum disulfide,...

Embodiment 2

[0020] 1) Ultrasonic cleaning the steel base for 60 minutes, then soak the steel base in a mixture of concentrated sulfuric acid and water for 30 minutes, where the specific gravity of concentrated sulfuric acid and water is 1:1, and then put the steel base into a concentration of Alkaline washing in a 10% strong alkali aqueous solution, soaking time is 30min, the strong alkali aqueous solution is sodium hydroxide solution, and then the steel base is washed 5 times with deionized water, and the steel base is dried in a vacuum dryer Drying, the temperature of the dryer is set to 90°C, and the time is 60 minutes. After drying, the steel substrate is subjected to high-energy shot peening nano-treatment, the shot diameter is 0.5mm, the shot peening speed is 60m / s, and the shot peening time is 60 minutes;

[0021] 2) According to the ratio of mass percentage, nano aluminum oxide 30%, polytetrafluoroethylene 50%, carbon fiber 10%, molybdenum disulfide 10%, put the nano working layer ...

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Abstract

The invention discloses a nano steel-based self-lubricating composite and a preparation method thereof. The nano steel-based self-lubricating composite is sequentially composed of a nano work layer and a steel substrate from top to bottom. The nano work layer is prepared from, by mass percent, 20-30% of nano aluminum oxide, 50-60% of polytetrafluoroethylene, 10-20% of carbon fibers and 10% of molybdenum disulfide. According to the nano steel-based self-lubricating composite and the preparation method thereof, the defects that a current steel-based self-lubricating composite is low in bonding strength, high in friction and wear performance, short in service life and the like are overcome, the steel substrate and a mixed nano material are firmly bonded, and the nano steel-based composite ishigh in friction and wear performance, high in mechanical strength, good in wear resistance and good in impact resistance.

Description

technical field [0001] The invention relates to the field of materials, in particular to a nano-steel-based self-lubricating composite material and a preparation method thereof. Background technique [0002] At present, with the rapid development of the automobile industry, food machinery, chemical industry and other industries, the requirements for various friction parts are getting higher and higher. Lubricating oil is usually used for lubricating parts. For the occasions with harsh working conditions, the traditional liquid lubrication method has been difficult to meet the requirements. Especially in industries that require oil-free lubrication such as food, pharmaceuticals, water conservancy, textiles, and aviation machinery, self-lubricating materials have become a new type of material in the field of lubrication. The current steel-based self-lubricating composite materials have low bonding strength and low friction. High coefficient, short service life and other short...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/00B29C43/18B29K27/18B29K509/02
CPCB29C43/003B29C43/006B29C43/18B29K2027/18B29K2509/02
Inventor 骆乐骆志高赵俊丽俞星马一玉
Owner 南京晶质新型复合材料科技有限公司
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