China Mechanical Engineering

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Process Simulation and Experiments for PEEK 3D Printing Technology

SHI Changchun1;HU Bin1;CHEN Dingfang2;CHEN Rong3;SHAN Bin1   

  1. 1.School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074
    2.Intelligent Manufacture and Control Institute, Wuhan Institute of Technology,Wuhan, 430063
    3.HUST-Wuxi Research Institute, Wuxi, Jiangsu, 214174
  • Online:2018-09-10 Published:2018-09-04

聚醚醚酮3D打印成形工艺的仿真和实验研究

史长春1;胡镔1;陈定方2;陈蓉3;单斌1   

  1. 1.华中科技大学材料科学与工程学院,武汉,430074
    2.武汉理工大学智能制造与控制研究所,武汉,430063
    3. 华中科技大学无锡研究院,无锡,214174
  • 基金资助:
    教育部创新团队发展计划资助项目(IRT13017)

Abstract: The medical PEEK components with high performance were difficult to process because they displayed intricate structure. To deal with the problems, the research of PEEK RP was conducted based on the fused deposition modeling (FDM) 3D printing technology. In particular, the design of high temperature chamber, analog simulation and process experiments were carried out accordingly. The simulation results show that the warping deformation phenomenon of PEEK sample may be greatly suppressed obviously through the applications of the prototyping chamber with the temperature close to the glass transition temperature of PEEK . Moreover, PEEK filament may melt uniformly through the applications of the nozzles with smaller diameters, which makes sure that the PEEK filament span steadily. The experimental data show that the highest average tensile strength of PEEK sample achieves about 74.74 MPa when using the nozzle diameter of 4 mm and the layer thickness of 0.1 mm during the PEEK 3D printing processes. The values are close to the tensile strength of the PEEK sample processed through the traditional injection molding.

Key words: polyethoretheretherketone(PEEK), rapid prototyping(RP), analog simulation, process experiment

摘要: 为解决高性能医用聚醚醚酮(polyethoretheretherketone,PEEK)零件复杂结构难以加工的问题,采用基于熔融沉积原理的3D打印方式,辅以高温成形腔体结构,通过模拟仿真和工艺实验,开展PEEK的快速成形系统工艺研究。仿真结果表明:采用接近PEEK玻璃化温度的高温成形腔体环境,可以明显地减小PEEK试样的翘曲变形;采用较小内径的喷嘴,有利于PEEK丝材的熔化和熔融挤出稳定性。实验数据表明:喷嘴内径0.4 mm和打印层厚0.1 mm的设置条件下,PEEK试样的最高平均拉伸强度可达到74.74 MPa,接近传统注塑成形零件的拉伸性能。

关键词: 聚醚醚酮, 快速成形, 模拟仿真, 工艺实验

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