铸造2026，Vol.75Issue(6)：595-604,10.DOI:10.27014/j.cnki.zhuzao.2026.0079
正交试验法优化挤出3D打印水溶性盐芯的成形精度
Forming Accuracy Optimization of Water-Soluble Salt Cores Fabricated by Extrusion 3D Printing Technology via Orthogonal Experimental Method
摘要
Abstract
Water-soluble salt cores were fabricated by extrusion 3D printing technology and stepwise sintering process using the inorganic salt sodium carbonate(Na2CO3)and sodium chloride(NaCl)powders as matrix materials,the polyvinylpyrrolidone(PVP)as binder,the ammonium polyacrylate as dispersant,and the anhydrous ethanol as solvent.Taking the extrusion nozzle inner diameter,the layer height-to-extrusion nozzle inner diameter ratio,the printing speed and the infilling direction as four critical factors,a four-factor,three-level orthogonal experiment was carried out,and optimal printing parameters were obtained through measuring the surface roughness and dimensional shrinkage rates of the water-soluble salt cores fabricated by the extrusion 3D printing technology with different process parameters,and determining the influence order of priority of different printing parameters on the forming precision of the water-soluble salt cores by using of range analysis.The results show that the extrusion nozzle inner diameter and layer height-to-extrusion nozzle inner diameter ratio are the dominant factors affecting forming accuracy of the water-soluble salt cores.Under the optimal printing conditions of extrusion nozzle inner diameter of 0.51 mm,layer height-to-extrusion nozzle inner diameter ratio of 70%,printing speed of 600 mm/min and infilling direction of 45°,the obtained salt cores possess better forming accuracy,with a surface roughness of 49.67 μm and dimensional shrinkage rates of 17.49%in the X direction and 18.32%in the Z direction.关键词
水溶性盐芯/挤出3D打印/表面粗糙度/收缩率/正交试验/成形精度Key words
water-soluble salt core/extrusion 3D printing/surface roughness/shrinkage rate/orthogonal experiment/forming precision分类
矿业与冶金引用本文复制引用
夏萌呈,刘富初,王妙,张浩远,胡柏林,漆金良,林学雄,徐凯,刘浩,韩光超..正交试验法优化挤出3D打印水溶性盐芯的成形精度[J].铸造,2026,75(6):595-604,10.基金项目
国家重点研发计划(2023YFB4605603 和 2022YFB4602502) （2023YFB4605603 和 2022YFB4602502）
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) （2024A1515013258）
深圳市科技计划资助(JCYJ20240813114009013) （JCYJ20240813114009013）
国家自然科学基金(52375395) （52375395）
深圳市基础研究重点项目(JCYJ20220818102601004) （JCYJ20220818102601004）
中国地质大学(武汉)中央高校基本科研业务费资助项目(2024XLB25和 2024XLB26) （武汉）
中国地质大学(武汉)教学实验室开放基金项目(SKJ2024121、SKJ2025124 和SKJ2025125) （武汉）
国家级大学生创新创业训练计划(202510491020和S202510491202). （202510491020和S202510491202）
