摘要
金属件熔融堆积3D打印过程中,制件的层间结合性能主要取决于热作用过程,因此对成形过程温度变化进行研究显得尤为重要。该研究基于熔融堆积3D打印成形特点,建立了成形过程有限元分析数学及物理模型,并使用ANSYS有限元软件对不同熔融金属温度、基板温度及堆积速度条件下成形过程温度场变化进行模拟研究。结合相同参数条件下的对比工艺试验,研究了这些参数对最终成形金属实体层间结合性能的影响。研究结果表明:随着熔融金属温度、基板温度的升高,以及堆积速度的增加,成形实体温度上升速度加快,高温热影响区增大,温度梯度减小,实体层间结合及拉伸性能提高,并在熔融金属温度160℃,基板温度90℃,堆积速度16mm/s参数条件下打印出了层间结合良好的铋锡合金实体。
During three-dimensional printing technology based on metal fused and deposition,the temperature distribution has a great effect on interlayer binding of the metal parts. So it is important to study the temperature distribution during the forming process. It reports a finite element method （ FEM ）analysis of metal fused and deposition during three-dimensional printing. Using the ANSYS FEM software,the temperature distribution was simulated during forming under different parameters of molten metal temperature,substrate temperature and forming speed, The influence of these parameters on the interlayer binding was analyzed through process experiment. It can be seen that,with the increase of molten metal temperature,substrate temperature and farming speed,the temperature of farming part rose faster,the heat affected zone was bigger,the temperature gradient was smaller,the interlayer binding and tensile property became better. The Sn-Bi alloy parts with good interlayer binding can be formed when the molten metal temperature was 160℃ ,the substrate temperature was 90℃ and the forming speed was 16 mm/s.
出处
《机械设计与制造》
北大核心
2016年第8期135-137,141,共4页
Machinery Design & Manufacture
基金
机械科学研究总院技术发展基金项目(201406)
北京市科技计划课题(Z151100003715004)
关键词
3D打印
熔融堆积
温度
有限元分析
Three-Dimensional Printing（3DP）
Fused and Deposition
Temperature
Finite Element Method（ FEM）An-alysis
作者简介
单忠德，（1979-），男，山东高密人，博士研究生，研究员，主要研究方向：绿色制造技术及装备
