摘要
为探究低温环境下矿井缠绕提升钢丝绳之间的滑动摩擦磨损特性,使用自制的低温环境钢丝绳摩擦磨损试验装置,以6×19+FC钢丝绳为研究对象,探究低温环境下干摩擦和水油润滑状态下钢丝绳的摩擦磨损特性.研究结果表明:干摩擦时,摩擦系数随环境温度的降低小幅增大,在-25℃时达到最大值,约0.85.油水润滑状态时,摩擦系数、磨损面积和磨损深度均明显小于干摩擦状态,平均磨损面积减小了约3倍,平均磨损深度减小了约7倍,平均摩擦系数随环境温度的降低先增大后减小,在-15℃时达到最大值,约0.35.此外,随着温度的降低,干摩擦状态时钢丝绳的磨损机理由氧化磨损和磨粒磨损转变为疲劳磨损和黏着磨损;油水润滑状态时,钢丝绳的氧化磨损减弱,黏着磨损先加重后减弱.
Mine hoist is an important throat equipment for coal transportation from the bottom of the shaft to the ground in coal mining.Hoisting wire rope is an important part of the hoist.For the winding hoist,there must be friction and wear when the wire rope is wound on the drum,which affects the service life of the rope.In addition,the drum room is generally in an open state,and its internal temperature is the same as the ambient temperature.However,the low temperature in winter in the north of China forces the wire rope to serve in the cold and freezing environment,and the lubrication state,icing and mechanical properties of the wire at low temperature will affect the improvement of the friction and wear properties of the rope,thus threatening the safety of mine production.Therefore,based on the selfmade friction and wear test device of wire rope in low temperature environment,the sliding friction and wear characteristics of mine winding-hoisting wire rope under low and freezing environment were explored,which provided important basic data and theoretical basis for the design of mine hoisting system in low temperature environment.Firstly,the friction and wear characteristics of wire rope(6×19+FC)under dry friction and oil-water lubrication at low temperature were investigated.The results showed that the friction coefficient increased non-linearly with the decrease of ambient temperature under the same speed and load test conditions.For dry friction,the friction coefficient increased slightly with the decrease of ambient temperature,and reached the maximum value of at-25℃,approximately 0.85.However,under oil-water lubrication,the friction coefficient of wire rope increased first and then decreased at different ambient temperatures,and reached the maximum value of at-15℃,approximately 0.35.In addition,humidity decreased as the temperature decreased.In low temperature and humidity environment,the oxidation reaction between friction pairs of the upper and lower layer rope without lubricating oil protection was greatl
作者
彭玉兴
王高芳
朱真才
常向东
卢昊
唐玮
王大刚
PENG Yuxing;WANG Gaofang;ZHU Zhencai;CHANG Xiangdong;LU Hao;TANG Wei;WANG Dagang(School of Mechatronic Engineering,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Jiangsu Province and Education Ministry Co-sponsored Collaborative Innovation Center of Intelligent Mining Equipment,Jiangsu Xuzhou 221116,China;Jiangsu Key Laboratory of Mine Electromechanical Equipment,Jiangsu Xuzhou 221116,China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2022年第3期552-561,共10页
Tribology
基金
教育部创新团队发展计划(IRT_16R68)
江苏高校优势学科建设工程项目(PAPD)
江苏高校品牌专业建设工程项目(TAPP)资助。
关键词
提升钢丝绳
低温
摩擦
磨损特性
磨损机理
hoisting wire rope
low temperature
friction
wear characteristics
wear mechanism
