摘要
目的提高黏结剂喷射3D打印金属零部件组织致密度,进而提高金属零部件综合力学性能。方法在现有黏结剂基础上添加金属盐,调控黏结剂黏度和表面张力,进而促进生坯烧结过程中金属粉末致密化过程,最终提高金属材料力学性能。结果在黏结剂中添加适量醋酸铜可以保证黏结剂性状稳定。在打印过程中,黏结剂喷射3D打印316L不锈钢稳定无异常,打印生坯尺寸精度高且表面粗糙度低。316L不锈钢烧结试样致密度显著提升;拉伸性能同步提高,其中塑性提升44%,抗拉强度提升3.5%。结论在黏结剂中添加适量醋酸铜,可以提高黏结剂喷射3D打印金属零部件致密度,提高金属零部件力学性能。
The work aims to improve the density of the microstructure in metal parts produced by binder jet 3D printing,thereby enhancing their overall mechanical properties.The addition of metal salts to the existing binder to regulate its viscosity and surface tension promoted the densification process of metal powder during the sintering of blanks,ultimately enhancing the mechanical properties of the metal material.Adding an appropriate amount of copper acetate to the binder could ensure the stability of the binder's properties.During the printing process,the binder jet 3D printing of 316L stainless steel proceeded smoothly without abnormalities,resulting in blanks with high dimensional accuracy and low surface roughness.Moreover,the sintered specimens exhibited significantly increased density and the mechanical testing revealed a 44%improvement in ductility and a 3.5%increase in tensile strength.These findings indicate that incorporating an appropriate amount of copper acetate into the binder promotes the sintering densification of binder jet 3D printed 316L metal parts and thereby enhances their mechanical properties.
作者
陈辉
陆子洋
徐龙
王凡
袁康
陈超
贾延东
CHEN Hui;LU Ziyang;XU Long;WANG Fan;YUAN Kang;CHEN Chao;JIA Yandong(School of Materials Science and Engineering,Jiangsu University of Science and Technology,Jiangsu Zhenjiang 212003,China;Marine Equipment and Technology Institute,Jiangsu University of Science and Technology,Jiangsu Zhenjiang 212003,China;State Key Laboratory of Materials for Advanced Nuclear Energy,Shanghai University,Shanghai 200444,China)
出处
《精密成形工程》
北大核心
2025年第12期199-207,共9页
Journal of Netshape Forming Engineering
基金
国家自然科学基金青年项目(52401212)
江苏省自然科学基金青年项目(BK20241020)
江苏省高校(高技术船舶)协同创新中心项目(XTCX202401)
镇江市国际科技合作计划项目(GJ2023011)
镇江市科技计划基础研究项目(JC2025034)
镇江市科协青年科技人才托举工程(ZJTJ-2025-020)。
