3D打印硬质合金研究进展  

Research Progress of 3D Printing Cemented Carbide

作　　者：刘云[1] 郭子傲 王行 张锦芳 李晓峰[1,2,3] Liu Yun;Guo Ziao;Wang Hang;Zhang Jinfang;Li Xiaofeng(School of Materials Science and Engineering,North University of China,Taiyuan 030051,China;HenanHuanghe Whirluind Limited Company,Changge 461500,China;State Key Laboratory For Powder Metallurgy,Central South University,Changsha 410083,China)

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]河南黄河旋风股份有限公司,河南长葛461500 [3]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《稀有金属》2021年第4期484-492,共9页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(51804280);山西省自然科学基金项目(201701D221086和201801D221146);山西省科技重大专项项目(20181101009);山西省教育厅科技创新项目(201802076);山西省回国留学人员科研资助项目(2017-095);山西省国际合作项目(201603D421024);山西省重点研发计划(国际科技合作)项目(201903D421075)资助。

摘　　要：硬质合金由难熔金属碳化物(如WC,NbC,TiC等)与过渡族金属元素(Co,Fe,Ni等)组成,因其具有良好的硬度、强度、耐磨性以及耐腐蚀性被广泛用作钻探切削、冲压模具、磨损件等。然而目前在硬质合金的高质量制备存在一些难题,如:生产周期长,易出现晶粒长大;受制于模具的形状,难以制备复杂形状工件。而3D打印技术在的快速发展为复杂硬质合金的制造提供了可能。综述了3D打印硬质合金的研究进展,着重围绕当前硬质合金3D打印的成型方式进行了介绍与对比。3D打印技术通过减少材料的损失和制造步骤的数量,降低生产成本,可以有效实现硬质合金的快速、精确、便捷的生产,未来有望成为生产复杂结构硬质合金的方法之一。但目前3D打印制备的硬质合金零件存在致密度低、组织控制与力学性能不足等问题,需要在未来进行深入研究。Cemented carbide was composed of refractory metal carbides(such as WC,NbC,TiC,etc.)and transition metal elements(Co,Fe,Ni,etc.).Because of its good hardness,wear resistance and corrosion resistance,it was widely used for drilling and cutting,stamping dies and wear parts,etc.However,there were some difficulties in the high-quality preparation of cemented carbide at present,such as,long production cycle and easy grain growth;restricted by the shape of the mold,it was difficult to prepare workpieces with complex shapes.The rapid development of 3 D printing technology provided the possibility for the manufacture of complex cemented carbide.This paper reviewed the research progress of 3 D printing cemented carbide,focusing on the folding way of cemented carbide 3 D printing for introduction and comparison.3 D printing technology could effectively realize the fast,accurate and convenient production of cemented carbide by reducing the loss of materials,the number of manufacturing steps and reducing production costs.It was expected to become one of the methods for producing complex structure cemented carbide in the future.However,the current cemented carbide parts prepared by 3 D printing had problems such as low density,insufficient structure control and mechanical properties,which required in-depth research in the future.At present,the methods of additive manufacturing of cemented carbide were mainly divided into direct forming and indirect forming.The direct forming methods were mainly selective laser melting(SLM),laser engineered net shaping(LENS)and selective electron beam melting(SEBM);the indirect forming methods were mainly binder jetting 3 D printing(BJ3 DP),3 D gel-printing,and selective laser sintering(SLS).The direct forming method used high-energy laser beam or electron beam as the heating source to selectively melt the powder and deposit it layer by layer.The formed sample had better compactness,and the mechanical properties,such as hardness was better than that of those prepared by indirect forming.Althoug

关 键 词：3D打印 硬质合金 成型方式 力学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]