基于响应面法的微挤出3D打印氧化硅多孔陶瓷工艺参数优化  

Optimization of Process Parameters for Micro-extrusion 3D Printing of Silica Porous Ceramics Based on Response Surface Methodology

作　　者：王妙 刘富初 王毅 赵彦鹤 张亮 刘浩[1,2] 徐凯 程鹏 韩光超[1,2] WANG Miao;LIU Fuchu;WANG Yi;ZHAO Yanhe;ZHANG Liang;LIU Hao;XU Kai;CHENG Peng;HAN Guangchao(School of Mechanical Engineering and Electronic Information,China University of Geosciences,Wuhan 430074,China;Shenzhen Research Institute,China University of Geosciences,Guangdong Shenzhen 518057,China;School of Electrical,Electronic,and Mechanical Engineering,University of Bristol,Bristol BS81QU,United Kingdom)

机构地区：[1]中国地质大学(武汉)机械与电子信息学院,武汉430074 [2]中国地质大学深圳研究院,广东深圳518057 [3]布里斯托大学电气电子机械工程学院,布里斯托尔BS81QU,英国

出　　处：《精密成形工程》2024年第12期68-81,共14页Journal of Netshape Forming Engineering

基　　金：广东省基础与应用基础研究基金自然科学基金面上项目(2024A1515013258);国家自然科学基金(52375395);2023年度湖北省农业农村领域科技计划(2023BBB096);深圳市基础研究重点项目(JCYJ20220818102601004);中国地质大学(武汉)教学实验室开放基金(SKJ2023125,SKJ2024121);中国地质大学(武汉)中央高校基本科研业务费资助项目(2024XLB25,2024XLB26);国家级大学生创新创业训练计划(202410491047,202410491048,202410491058,S202410491017,S202410491102,X202410491055)。

摘　　要：目的探明微挤出3D打印氧化硅多孔陶瓷性能与工艺参数的影响规律,获得较优的3D打印工艺参数,优化氧化硅多孔陶瓷侧表面粗糙度、强度和气孔率。方法采用微挤出3D打印技术制备氧化硅多孔陶瓷,基于响应面法方法,以针头内径、层高/针头内径比值和打印速度为自变量,分析不同工艺参数对陶瓷侧表面粗糙度、抗弯强度和气孔率的影响。结果针头内径和层高/针头内径比值的交互作用对侧表面粗糙度影响最大,针头内径和打印速度的交互作用对抗弯强度和气孔率影响最为显著。确定了最优工艺参数方案,即针头内径为0.41 mm、层高/针头内径比值为48%和打印速度为610 mm/min,此时氧化硅多孔陶瓷具有优异的综合性能,即侧表面粗糙度为21.24μm±0.98μm、抗弯强度为7.38 MPa±0.31 MPa、气孔率为52.21%±1.07%。结论建立了氧化硅多孔陶瓷侧表面粗糙度、抗弯强度和气孔率与针头内径、层高/针头内径比值、打印速度的二阶非线性回归数学模型,实现了侧表面粗糙度、抗弯强度与气孔率的协同优化,为微挤出3D打印技术在多孔陶瓷领域的推广应用提供了理论依据和实践参考。The work aims to investigate the effect of process parameters on the performance of micro-extrusion 3D printed silica porous ceramics,obtain optimal 3D printing parameters,and optimize the surface roughness,strength,and porosity of sil-ica porous ceramics.Silica porous ceramics was fabricated by micro-extrusion 3D printing technology.Based on response sur-face methodology,needle inner diameter,layer height/needle inner diameter ratio,and printing speed were analyzed as inde-pendent variables to assess their effects on the surface roughness,flexural strength,and porosity of the 3D printed ceramics.The results indicated that the interaction between needle inner diameter and layer height/needle inner diameter ratio had the greatest effect on surface roughness,while the interaction between needle inner diameter and printing speed significantly affected flex-ural strength and porosity.The optimal process parameters were obtained,possessing a needle inner diameter of 0.41 mm,a layer height/needle inner diameter ratio of 48%,and a printing speed of 610 mm/min,the corresponding silica porous ceramics exhibited excellent overall performance,presenting a surface roughness of 21.24μm±0.98μm,a flexural strength of 7.38 MPa±0.31 MPa,and a porosity of 52.21%±1.07%.In conclusion,a second-order nonlinear regression mathematical model is estab-lished to correlate the surface roughness,flexural strength,and porosity of silica porous ceramics with the needle inner diameter,layer height/needle inner diameter ratio,and printing speed.This allows for the coordinated optimization of surface roughness,flexural strength,and porosity,providing a theoretical basis and practical reference for the promotion and application of mi-cro-extrusion 3D printing technology in the field of porous ceramics.

关 键 词：氧化硅多孔陶瓷 微挤出3D打印 响应面法 侧表面粗糙度 抗弯强度 气孔率 

分 类 号：TG241[金属学及工艺—铸造] TH164[机械工程—机械制造及自动化]