Wear resistance of chain rings of scraper conveyor under different abrasive conditions
In order to solve the chain ring wear inefficiency of scraper conveyor in coal transportation,which is caused by three-body wear of the scraper chain system.The abrasive wear test was carried out by abrasive wear testing machine,and the abrasion characteristics and wear resistance of three kinds of scraper conveyor chain ring materials(YXKB2 steel,54 steel,and 25MnVK steel)were analyzed by orthogonal test as well as one-way test with different factors(abrasive ratio,abrasive grain size,and hardness of the chain ring materials).The test results show that the effect of abrasive ratio on the amount of material wear is the most significant,and the coupling effect of abrasive ratio and abrasive grit size is the second most significant.Under equal mass abrasive conditions,the wear of YXKB2 steel decreases with increasing abrasive grit size,but in the three-body wear process,abrasive fragmentation leads to a non-significant effect of abrasive grit size on material wear.The hardness of the three chain ring materials was positively correlated with the wear resistance.Within the range of test conditions,the wear resistance of the three materials is YXKB2 steel,25MnVK steel,and 54 steel in descending order.
chain ring materialthree body wearhardnessabrasive particle sizewear resistance
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