摘要
针对煤矿机械磨损失效的问题,分析了煤矿机械的磨损失效形式,表明煤矿机械的磨损失效形式主要是磨损,而激光熔覆技术可充分满足煤矿机械设备中易磨损关键零部件表面强化需求,通过改善零部件的表面性能,可提高设备耐磨性能。文章介绍了表面工程新兴领域的激光熔覆技术,并利用ANSYS软件的"生死单元"技术对45钢表面进行了激光熔覆Ni60+15%WC复合粉末仿真,分析了温度场。结果表明,基体与熔覆层为冶金结合,基体各点在熔覆过程中以固定的温度伴随着热源同步前移,形成准稳态温度场。
Based on mining machinery wear failure, the wear failure form of coal mining machinery was analyzed, the result showed that the main reason of the failure was wear, The uniqueness of laser cladding can strengthen the surface of wear parts in coal mining machinery, thus enhance the wear resistance of the machinery by improving the surface performance of the part. Surface engineering of laser cladding technology was introduced, the numerical simulation and its temperature- field analysis were obtained during the process of laser cladding on 45 steel's surface with Ni60+15% WC compound powder by birth and death of ANSYS software. The results showed that the metallurgical bonding was consist of cladding coating and matrix, each point's temperature keeps pace with the heat resource's move and quasistationary temperature distribution was formed in process.
出处
《煤炭与化工》
CAS
2015年第6期67-69,72,共4页
Coal and Chemical Industry
关键词
煤矿机械
磨损失效
激光熔覆
温度场
mining machinery
wear failure
laser cladding
temperature field