煤冻粘强度与水润滑动摩擦因数的关系  

RELATION OF COAL FREEZING ADHESIVE STRENGTH WITH WATER-LUBRICATING COEFFICIENT OF KINETIC FRICTION

作　　者：王春华[1] 许瀚文[1] 郝志勇[1] 曲辉[1] 王仲娴[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000

出　　处：《机械强度》2016年第6期1211-1215,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51374120)资助~~

摘　　要：煤炭是我国重要的基础能源,然而我国高寒地区冬季采煤中由于改向滚筒表面冻粘引起的输送带跑偏、撕裂问题严重制约了冬季煤矿的安全和高效生产,给公司带来了巨大的经济损失,现有的解决方法虽然对煤的冻粘有一定缓解但无法从根本上解决问题。通过自行设计的冻粘强度测试装置,在温度为-25℃和冷冻时间为3 h的条件下,测试了4种不同材料与含水率40%煤泥的冻粘特性。实验研究发现,煤的法向与切向冻粘强度均随着材料水润滑动摩擦因数的减小而下降,呈现一定线性关系,结果表明,提高材料水润滑性能可以降低冻粘强度,这一发现对工程领域防冻粘涂层的选择和制备具有重要指导意义,值得进一步深入探索与研究。Coal is the important basic energy in China, however due to the problems of conveyor belt running deviation and avultion caused by freezing adhesive turnabout roller surface,it seriously restricts with coal mine safe and efficient production in cold regions during winter and brings huge economic losses to the company, although existing solutions have a certain ease of coal freezing adhesion but can not fundamentally solve the problem. Through the freezing adhesive strength test device designed by ourselves, under conditions of -25℃ temperature and 3h freezing time, freezing adhesive characteristic of four different materials with moisture content 40% of the coal slime were tested. Experimental studies have found that with the decrease of material water- lubricating coefficient of kinetic friction coal normal and tangential freezing adhesive strength decrease, it shows a certain linear relation,the results indicate that improving the water-lubricating performance can reduce the freezing adhesive strength, the discovery has important guiding significance to the selection and preparation of anti-freezing adhesive coating in engineering field, it deserves further explore and study.

关 键 词：煤 冻粘 水润滑 动摩擦 涂层 

分 类 号：TD57[矿业工程—矿山机电] TD528