Analysis of Metal Countergrinding Test in Middle Groove of Scraper Conveyor
In this paper,the grinding test is designed to explore the influence of different working condi-tions on the wear resistance of metal in the middle groove of the scraper conveyor.The control variable method was adopted for the grinding experiment,and the samples were made with three kinds of steel mate-rials,16Mn,NM400 and HD400.The samples were placed in the universal friction and wear testing machine,and the influences of the variables such as wear stroke,loading pressure and sliding speed on the wear amount of the samples in the middle groove were respectively investigated.The results show that the wear stroke is positively correlated with the wear amount.The wear resistance of HD400 is better under low pres-sure and low speed conditions,the wear resistance of HD400 is better under high pressure and high speed conditions,and the wear resistance of 16Mn is the worst under any working conditions.It can be concluded that the middle groove metal of appropriate material should be selected according to the operating conditions of the scraper conveyor,and under the premise of meeting the needs of coal mining and transportation,the loading pressure and sliding speed of the scraper conveyor should be scientifically set,which has a positive effect on extending the service life of the metal of the middle groove.
万方数据
维普
