金属粘结剂喷射增材制造技术发展与展望  

Development and Prospect of Metal Binder Jetting Additive Manufacturing Technology

作　　者：魏青松[1,2] 衡玉花 毛贻桅 冯琨皓 蔡超 蔡道生[3] 李伟 WEI Qing-song;HENG Yu-hua;MAO Yi-wei;FENG Kun-hao;CAI Chao;CAI Dao-sheng;LI Wei(School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;State Key Laboratory of Materials Processing and Die&Mould Technology,Wuhan 430074,China;Wuhan EasyMFG Technology CO.,LTD,Wuhan 430074,China;School of Machinery and Automation,Wuhan University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学材料科学与工程学院,武汉430074 [2]材料成形与模具技术国家重点实验室,武汉430074 [3]武汉易制科技有限公司,武汉430074 [4]武汉科技大学机械自动化学院,武汉430074

出　　处：《包装工程》2021年第18期103-119,I0010,共18页Packaging Engineering

基　　金：国家自然科学基金(51775207);武汉市科技项目(2020010602012037);湖北省重点研发项目(2020BAB049);容桂街道扶持战略性新兴产业研发项目(2020);华中科技大学学术前沿团队项目。

摘　　要：目的介绍了粘结剂喷射增材制造(BJAM)技术打印金属零件的发展历程、技术特点、打印材料和应用领域,重点分析了影响金属BJAM零件质量的主要因素,讨论了金属BJAM技术的研究重点。方法归纳了金属BJAM技术的重要发展节点及现阶段技术的成熟度;总结了原材料、打印及烧结工艺参数对BJAM打印金属零件质量的影响规律;按材料种类讨论了BJAM打印金属零件的致密度、微观组织及力学性能。结论通过分析金属BJAM技术可实现高效率、低成本制造金属零件,但仍存在烧结致密度低和收缩严重等问题,指出了改善铺粉质量、开发新型粘结剂和模拟预测烧结收缩等是金属BJAM技术未来发展的重点方向。This paper introduces the development course,technical characteristics,printing materials and application fields of binder jetting additive manufacturing(BJAM)technology in metal parts printing,analyzes the main factors affecting the quality of metal BJAM parts,and discusses the research focus of metal BJAM technology.The paper generalizes the important development nodes of metal BJAM technology and the maturity of the technology at current stage,summarizes the effects of raw materials,printing and sintering process parameters on the quality of BJAM printed metal parts,and discusses the density,microstructure and mechanical properties of BJAM printed metal parts according to the types of materials.The results show that metal BJAM technology enables the high-efficiency and low-cost production of metal parts,but there are still problems such as low sintering density and serious contraction.It is pointed out that improving the quality of powder laying,developing new types of binder series,as well as simulating and predicting sintering contraction are the key directions of metal BJAM technology development in the future.

关 键 词：增材制造 粘结剂喷射 烧结 金属 性能 

分 类 号：TB472[一般工业技术—工业设计]