选择性激光熔覆快速成形工艺过程能效分析与优化  

Energy Efficiency Analysis and Optimization of Selective Laser Melting Rapid Formation Process

作　　者：肖罡 高彬[2,3] 韩燕 万可谦[1] 杨钦文 XIAO Gang;GAO Bin;HAN Yan;WAN Keqian;YANG Qinwen(Jiangxi KMAX Industrial Co.,Ltd.,Nanchang 330100,China;State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China;Collaborative Innovation Center o£Engineering Technology,Jiangxi University of Applied Science,Nanchang 330100,China;College of Mechanical Engineering,Jiujiang Vocational and Technical College,Jiujiang 332007,China)

机构地区：[1]江西科骏实业有限公司,南昌330100 [2]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082 [3]江西应用科技学院,工程技术协同创新中心,南昌330100 [4]九江职业技术学院机械工程学院,九江332007

出　　处：《机械工程材料》2021年第10期75-83,共9页Materials For Mechanical Engineering

基　　金：国家自然科学基金面上项目(52075159);中国博士后科学基金资助项目(2019M652755);湖南省教育厅科学研究项目(19C0754);江西省教育厅科学研究项目(GJJ191277,GJJ191283);国家金属材料近净成形工程技术研究中心开放基金资助项目(2020013)。

摘　　要：通过选择性激光熔覆(SLM)系统能耗构成及特征分析,构建了系统能耗及比能耗(表征能效)与工艺过程参数间的定量关系,提出了以能效最优化为目标的工艺过程参数优化策略。结果表明:激光功率的选取需要考虑熔覆效率与能耗之间的矛盾;激光扫描速度的合理提升,可在熔覆道尺寸减小的劣势下提高熔覆效率,缩短激光熔覆的工作时间,进而降低能耗;较大的铺粉厚度与扫描速度,以及较小的横向搭接率,并匹配合适的激光功率,可有效降低SLM系统的比能耗。选择高度较小的方向进行堆垛成形可缩短层间停隔时间,进而降低系统能耗。The quantitative relationship between system energy consumption,specific energy consumption(indicating energy efficiency)and process parameters was established by analyzing the energy consumption composition and characteristics of selective laser melting(SLM)system.A process parameter optimization strategy for optimizing the energy efficiency was proposed.The results show that the contradiction between the cladding efficiency and the energy consumption should be considered in selecting the laser power.The reasonable increase of laser scanning speed could improve the cladding efficiency and shorten working time of laser cladding under the disadvantage of reducing the cladding channel size,and then reduce energy consumption.Larger powder-bed thickness and scanning speed,as well as smaller transverse overlap rate matching the appropriate laser power,could effectively reduce the specific energy consumption of the SLM system.Choosing a direction with a smaller height for stacking could shorten the interlayer time and reduce the energy consumption of the system.

关 键 词：增材制造 能耗模型 能效分析 优化策略 

分 类 号：TH162[机械工程—机械制造及自动化] TG146[一般工业技术—材料科学与工程]