熔融堆积3D打印成形金属件层间结合研究

发布时间：2018-01-05 14:41

  本文关键词：熔融堆积3D打印成形金属件层间结合研究　出处：《机械设计与制造》2016年08期 　论文类型：期刊论文

  更多相关文章： D打印 熔融堆积 温度 有限元分析

【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。
[Abstract]:In the process of 3D printing, the interlaminar bonding properties of metal parts mainly depend on the thermal process. Therefore, it is very important to study the temperature change of forming process. Based on the characteristics of melt deposition 3D printing, the mathematical and physical model of finite element analysis of forming process is established. ANSYS finite element software was used to simulate the temperature field of the forming process under the conditions of different melting metal temperature, substrate temperature and packing velocity. The effect of these parameters on the interlaminar bonding properties of the final metal body is studied. The results show that with the increase of the melting metal temperature, the substrate temperature and the stacking speed increase. The temperature of the forming solid increases rapidly, the temperature affected zone increases, the temperature gradient decreases, the interlayer bonding and tensile properties are improved, and the melting metal temperature is 160 鈩，

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