• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (9): 224-232.doi: 10.3901/JME.2019.09.224

• 制造工艺与装备 • 上一篇    

基于氧阻聚效应的陶瓷面成形工艺优化研究

刘小栋1, 连芩1,2, 李涤尘1,2, 曹毅1,2, 伍尚华3, 武向权1, 孟佳丽1, 何晓宁4   

  1. 1. 西安交通大学机械制造系统工程国家重点实验室 西安 710054;
    2. 西安交通大学陕西省快速制造国家工程技术研究中心 西安 710054;
    3. 广东工业大学机电工程学院 广州 510006;
    4. 西安电子科技大学宽带隙半导体技术国家重点学科实验室 西安 710049
  • 收稿日期:2018-10-12 修回日期:2018-12-09 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: 连芩(通信作者):女,1971年出生,博士,副教授,博士研究生导师。主要研究方向为增材制造与仿生制造。E-mail:lqiamt@mail.xjtu.edu.cn
  • 作者简介:刘小栋,男,1996年出生。主要研究方向为增材制造与仿生制造。E-mail:1069148593@qq.com
  • 基金资助:
    陕西省科技厅(2016KTZDGY07-01,2017ZDXM-G-4-3,2017HBGC-06)、广东省科技厅(2017B090911011)和国家自然科学基金(51835010)资助项目。

Process Optimization of Oxygen-inhibition-based Ceramic Mask-projection Stereolithography

LIU Xiaodong1, LIAN Qin1,2, LI Dichen1,2, CAO Yi1,2, WU Shanghua3, WU Xiangquan1, MENG Jiali1, HE Xiaoning4   

  1. 1. Stake key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054;
    2. Shaanxi Rapid Manufacturing national Engineering Technology Research Center, Xi'an Jiaotong University, Xi'an 710054;
    3. School of Electr-mechanical Engineering, Guangdong University of Technology, Guangzhou 510006;
    4. Wide Bandgap Semiconductor Technologe Disciplines State Key Laborary, Xidian University, Xi'an 710049
  • Received:2018-10-12 Revised:2018-12-09 Online:2019-05-05 Published:2019-05-05

摘要: 氧阻聚效应的应用使得陶瓷光固化增材制造技术的加工速度和成形精度有了显著提升。利用自制的陶瓷面成形快速成型系统和具有氧阻聚效应的Al2O3陶瓷浆料,开展了氧气浓度、液槽底部PDMS膜的厚度对已固化层与PDMS膜粘接引起的分离力大小的研究;在最优PDMS膜厚(0.3 mm)条件下,氧气浓度对陶瓷件尺寸精度、收缩率以及力学性能的影响研究中发现,氧阻聚效应减小了固化层与PDMS膜粘接形成的分离力大小,但不影响陶瓷零件的弯曲强度(约175 MPa),而且适当的氧气浓度可以显著改善零件的尺寸精度和表面质量。正交实验确定了陶瓷多孔结构成形的工艺参数(包括氧浓度、曝光强度和分层厚度)最优集,对比空气条件下(即氧气浓度约20%)打印成形的多孔结构,最优条件下(即氧气浓度40%)所成形的多孔结构形貌有明显提升,最大尺寸偏差减小45%。

关键词: 面成形, 陶瓷, 氧阻聚, 制造精度

Abstract: The application of oxygen-inhibition leads to significant enhance of the forming speed and precision of mask-projection stereolithography technology. A mask-projection stereolithography system with a controlled oxygen set and the self-developed Al2O3 slurry have been applied to explore the influence of oxygen concentration and PDMS film thickness on the separation force between the cured layer and the surface of PDMS film. The optimal thickness of 0.3mm of PDMS film is selected to find how the oxygen work on the size accuracy, shrinkage and mechanical strength of ceramic parts. The oxygen-inhibition application significantly lessened the separation forces in the ceramic curing period, but had no effect on the bonding strength (~175 MPa) of ceramic parts. Meanwhile, the appropriate oxygen concentration had capability of getting good accuracy and surface quality of the parts. Orthogonal experiments are carried out to determine the optimal process parameters of the porous structures (including oxygen concentration, light exposure intensity and slice thickness), the formed morphological structures under the optimal oxygen concentration (about 40%) were better than that of under air condition (the oxygen concentration, about 20%),the maximum size deviation is reduced by 45%.

Key words: ceramics, mask-projection stereolithography, oxygen inhibition, processing precision

中图分类号: