基于金属3D打印技术成形嵌套零件工艺研究  

Research of 3D printing technology based on metal double nozzle to form the hanging parts

作　　者：李素丽[1] 魏正英[1] 杜军[1] 赵光喜[1] 王鑫[1] 刘伟[1] 卢秉恒[1] 

机构地区：[1]机械制造系统工程国家重点实验室(西安交通大学),西安710049

出　　处：《材料科学与工艺》2016年第6期1-7,共7页Materials Science and Technology

基　　金：国家自然科学基金项目(31370944);中国博士后科学基金(2014m560764);陕西省自然科学基金项目(2014JQ7238);"中央高校基本科研业务费专项资金

摘　　要：针对传统采用多个零件拼接而成具有悬垂嵌套结构的零件,提出了金属均匀喷射熔滴沉积"双喷头"3D打印成形工艺,开发了金属微喷熔滴沉积成形试验平台,通过对新型支撑材料的配比和成形工艺研究,实现了金属以及支撑材料成形的联动控制,成形出较高精度悬垂嵌套的金属制件,与传统成形工艺相比,具有成形周期短,制造成本低等优点,实现了此类零件的即用即打,此类零件成形提供了实现的途径与条件.According to the nested components jointed with multiple parts,a double-nozzle droplet deposition process was put forward in this paper,and the experimental system was developed. Through the research on the properties of support materials and the process of double-nozzle droplet deposition,the linkage control of the metal droplet deposition and the support material extrusion was realized,and a nested component with complex construction was fabricated directly. Compared with the traditional forming processes,this doublenozzle deposition process has the advantages of short cycle,low cost and so on. It can provide an approach way to build the nested parts.

关 键 词：双喷头 悬垂嵌套 金属熔滴 支撑 

分 类 号：TG113[金属学及工艺—物理冶金]