DLF与SLM激光快速成型方法的比较研究  

Comparative research on direct laser fabrication and selective laser melting

作　　者：陈光霞[1] 曾晓雁[2] 

机构地区：[1]江汉大学机电与建筑工程学院,武汉430056 [2]华中科技大学武汉国家光电实验室激光部,武汉430074

出　　处：《现代制造工程》2010年第5期72-75,共4页Modern Manufacturing Engineering

摘　　要：分别采用激光直接制造(DLF)技术和选择性激光熔化(SLM)技术对不锈钢材料进行一系列的激光快速成型实验,根据实验结果,对比分析DLF和SLM两种方法在成形机理、成型精度、成型效率、适用场合、成型件的力学性能和组织结构等方面的异同。结果表明,SLM技术的成型精度要优于DLF技术;两者成型件都具有较高的力学性能,均优于普通不锈钢;SLM与DLF成型件组织性能基本相同;如果切片层厚相同,SLM的成型效率高于DLF;DLF主要用于粗加工或零件修复等场合,而SLM可用于精密、复杂零件的制造。Laser rapid prototyping experiments were processed by Direct Laser Fabrication（DLF）and Selective Laser Melting（SLM）using stainless steel powder.According to the results,the differences of molding principle,molding precision,molding efficiency,applying situation,mechanics performance and microstructure were derived between SLM with DLF.The results show：SLM is better than DLF on molding precision;and both of them have better mechanics performance than common stainless steel;the microstructure of metal part built by SLM is almost the same as DLF＇s;the efficiency of SLM is higher than DLF if the slicing thickness of them are the same;so DLF is mainly applied in coarse process or part repairing,and SLM is mainly applied in fabrication of exactitude and complex part.

关 键 词：激光直接制造 选择性激光熔化 精度 效率 力学性能 组织结构 

分 类 号：TH16[机械工程—机械制造及自动化]