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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 6    December 2005

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Preparation of hyperthermal lithium complex grease
MAO Da-heng(毛大恒), FENG Hao(俸 颢), SUN Xiao-ya(孙晓亚)

School of Mechanical and Electrical Engineering, Central South University, 
Changsha 410083, China

Abstract: Using 12-hydroxystearate, nonan-edioic acid and lithium hydroxide as thickener, refined mineral oil and synthetic oil as base oil, along with some structure improver, antioxidant and anti-wear extreme pressure additive, lithium complex grease was developed. The dropping point of the grease is 331℃, friction factor is 0.025-0.026 under 1.0kN, especially above 220℃, its friction factor is 2/3 of those of urea-based greases and other high temperature greases. At the same time, it has good waterproof, anti-oxidation effect and anti-corrosion properties. The results of the field experiment proves that its working temperature is higher than 600℃, and it has reasonable working life in 800℃.

 

Key words:  lithium complex grease; structure improver; anti-wear agent

ISSN 1672-7029
CN 43-1423/U

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