中文摘要：

根据熔融沉积成型（FDM）工艺制造原型高效快速,原材料适应性广的特点,提出了以低温金属代替热塑性材料实现原型制造的方法,探究以低温金属为材料的熔融沉积成型工艺特点和各工艺参数对沉积成型质量的影响,并在此基础上开发了低温金属三维打印系统。实验以Sn99.3Cu0.7金属丝为材料,设计并实现了单层沉积和多层沉积实验。实验证明：通过优化低温金属三维打印系统运动参数,能够得到质量较好的单层金属线和三维金属模型,验证了低温金属熔融沉积成型工艺在PCB制版和金属三维成型方面应用的可行性,并根据实验结果提出了后续技术发展应重点解决的问题。

英文摘要：

Itpresents a method usinglow melting temperature metals instead of thermoplastic materials to achieve prototypes modeling according to the high efficiency and wide capacity of material of the FDM method,investigating the process features of this method and effects of process parameters on the quality of modeling.A low melting temperature metals printing system is designed based on this. Single-layer and multi-layer deposition experiments are conducted using Sn99.3Cu0.7 metal wire material. Research shows that high quality single layer metal lines and 3D metal models can be achieved via optimization of moving parameters of the low melting temperature metals printing system,provingpossible use of this method in PCB printing and 3D modeling of metals. And then the problems that should be focused on in the following researches are discussed according to the experiments.