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1、第41卷第9期煤炭学报Vol.41No.92016年9月JOURNALOFCHINACOALSOCIETYSep.2016葛世荣,王军祥,王庆良,等.刮板输送机中锰钢中部槽的自强化抗磨机理及应用[J].煤炭学报,2016,41(9):2373-2379.doi:10.13225/j.cnki.jccs.2016.0095GeShirong,WangJunxiang,WangQingliang,etal.Self-strengtheningwearresistantmechanismandappli
2、cationofmediummanganesesteelappliedforthechuteofscraperconveyor[J].JournalofChinaCoalSociety,2016,41(9):2373-2379.doi:10.13225/j.cnki.jccs.2016.0095刮板输送机中锰钢中部槽的自强化抗磨机理及应用1211葛世荣,王军祥,王庆良,陈辉(1.中国矿业大学材料科学与工程学院,江苏徐州221116;2.天津威尔朗科技有限公司,天津300385)摘要:针对煤矿刮板输
3、送机中部槽的耐磨难题,研究了热轧中锰耐磨钢和马氏体耐磨钢的冲击磨损性能,分析了中锰钢的自强化耐磨机理,介绍了中锰耐磨钢在煤矿刮板输送机中部槽的应用实例。试验结果表明,热轧中锰钢比传统马氏体耐磨钢表现出更好的抗冲击磨料磨损性能,磨损表面硬化层厚度约1000μm,最高显微硬度达531HV,对应的洛氏硬度达52HRC,表现出优良的耐磨强化效果。研究发现,中锰耐磨钢的耐磨强化机理随冲击功的不同而变化,由较低冲击功的马氏体相变、位错和层错复合强化机制,演变为较高冲击功时的马氏体相变、位错和形变孪晶复合强化机
4、制。实际应用表明,热轧改性中锰耐磨钢的抗磨损性能优于Hardox450耐磨钢,可显著降低中部槽磨损,大幅度延长刮板输送机可靠运行寿命。关键词:刮板输送机;热轧中锰钢;冲击磨损;强化机理中图分类号:TD421文献标志码:A文章编号:0253-9993(2016)09-2373-07Self-strengtheningwearresistantmechanismandapplicationofmediummanganesesteelappliedforthechuteofscraperconveyor
5、1211GEShi-rong,WANGJun-xiang,WANGQing-liang,CHENHui(1.SchoolofMaterialScienceandEngineering,ChinaUniversityofMiningandTechnology,Xuzhou221116,China;2.TianjinWillLongScienceandTech-nologyCo.,Ltd.,Tianjin300385,China)Abstract:Inordertoovercomethewear-re
6、sistantproblemwiththechuteofscraperconveyor,theimpactwearproper-tiesofhotrollingmediummanganesesteelandmartensitesteelwereinvestigatedinthisstudy.Inaddition,theself-strengtheningwearmechanismswereanalyzedandtheapplicationofmediummanganesewear-resistan
7、tsteelwasintro-ducedinthechuteofscraperconveyorincoalmines.Theresultsshowthatthemediummanganesesteelrevealsabet-terwearresistancetoimpactwearpropertiescomparedwiththemartensitesteel.Approximately1000μmhardenedlayerinthicknessisformedinwornsubsurface.T
8、hehighestvickershardnessisabout531HV.Andthehighestrock-wellhardnessisabout52HRC,showinganexcellentwearresistancestrengtheneffect.Wearresistantstrengtheningmechanismvarieswiththeimpactenergy.Thestrengtheningmechanismsatalowerimpactenergyarecont
