Study on Tribological Properties of the Rolling Fluid Containing Nano-MoS_2 for Cold Rolling of Steel Strip  

作　　者：Zhu Guangping Sun Jianlin Wang Bing Wang Yizhu (School of Materials and Engineering,University of Science and Technology Beijing,Beijing 100083) 

出　　处：《China Petroleum Processing & Petrochemical Technology》2011年第1期64-69,共6页中国炼油与石油化工（英文版）

基　　金：supported by the "863" Program-the National High Technology Research and Development Program of China (2009AA03Z339)

摘　　要：The nano-MoS2 particles were adopted to substitute for the extreme-pressure and anti-wear additives to the rolling fluid for steel strips.An optimal formulation and technical process for adding nano-MoS2 particles to the rolling fluid were obtained through orthogonal experiments with three factors at three levels.The tests have led to the following conclusions:(a) the nanoparticles should be added to a base oil with high saponification value;(b) the concentration of nanoparticles in rolling fluid should be equal to 0.6%;and (c) when the reaction time needed for surfactants (oleic acid,for example) to modify the nanoparticles was 40 min,the rolling fluid could have the best tribological properties.The lubricity of rolling fluid was verified by using a 4-high cold rolling test mill which showed that the rolling fluid with nano-MoS2 particles had the excellent lubricant performance to improve the surface quality of the steel strip remarkably.The mechanism of nano-MoS2 particles in the rolling process has been investigated by a series of characterization instruments,which have showed that,with its fullerene-like structure,the nano-MoS2 particles have self-lubricating properties and extra-low friction coefficient,and can easily form a protective film with low shear strength on the surface of friction pairs.The nano-MoS2 particles were adopted to substitute for the extreme-pressure and anti-wear additives to the rolling fluid for steel strips.An optimal formulation and technical process for adding nano-MoS2 particles to the rolling fluid were obtained through orthogonal experiments with three factors at three levels.The tests have led to the following conclusions：（a） the nanoparticles should be added to a base oil with high saponification value;（b） the concentration of nanoparticles in rolling fluid should be equal to 0.6%;and （c） when the reaction time needed for surfactants （oleic acid,for example） to modify the nanoparticles was 40 min,the rolling fluid could have the best tribological properties.The lubricity of rolling fluid was verified by using a 4-high cold rolling test mill which showed that the rolling fluid with nano-MoS2 particles had the excellent lubricant performance to improve the surface quality of the steel strip remarkably.The mechanism of nano-MoS2 particles in the rolling process has been investigated by a series of characterization instruments,which have showed that,with its fullerene-like structure,the nano-MoS2 particles have self-lubricating properties and extra-low friction coefficient,and can easily form a protective film with low shear strength on the surface of friction pairs.

关 键 词：cold rolling NANO-MOS2 STRIP rolling fluid mechanism 

分 类 号：TG335.12[金属学及工艺—金属压力加工]