金属增材制造格栅零件磨粒流抛光

doi:10.7527/S1000-6893.2017.421210

材料工程与机械制造

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金属增材制造格栅零件磨粒流抛光

高航, 李世宠, 付有志, 魏海波, 彭灿, 王宣平

大连理工大学精密与特种加工教育部重点实验室, 大连 116024

收稿日期:2017-03-02 修回日期:2017-04-27 出版日期:2017-10-15 发布日期:2017-04-26
通讯作者: 高航 E-mail:gaohang@dlut.edu.cn
基金资助:
国家自然科学基金创新群体"精密制造理论与技术基础研究"（51621064）；国家自然科学基金面上项目（51475074）；中央高校基本科研业务费专项资金（DUT15QY37）；装备预研教育部联合基金（6141A02022106）

Abrasive flow machining of additively manufactured metal grilling parts

GAO Hang, LI Shichong, FU Youzhi, WEI Haibo, PENG Can, WANG Xuanping

Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China

Received:2017-03-02 Revised:2017-04-27 Online:2017-10-15 Published:2017-04-26
Supported by:
Science Fund for Creative Research Groups of NSFC (51621064);National Natural Science Foundation of China (51475074);The Fundamental Research Funds for the Central Universities (DUT15QY37);Joint Pre-research Fund of the General Armaments Department and MOE (6141A02022106)

摘要/Abstract

摘要：

增材制造（AM）技术对成型复杂结构零件有显著优势，但以选区激光熔融技术为代表的金属增材制造技术固有的"粉末粘附"、"球化效应"所导致的毛糙表面，使零件难以满足使用要求。采用混合粒径磨料介质对增材制造铝合金格栅外表面及细小内孔进行一体化抛光试验研究。通过分析磨粒流加工过程各阶段的微观形貌和表面轮廓测量结果等来研究材料去除过程中零件表面形貌、材料去除和表面粗糙度变化。试验结果表明，磨粒流加工方法能够有效消除"球化效应"导致的零件表面的金属球团簇聚集现象，并能够对增材制造格栅零件外表面和内孔实现有效的抛光，格栅表面粗糙度从初始的14 μm降至1.8 μm。

关键词: 增材制造(AM), 球化效应, 粉末粘附, 铝合金格栅, 磨粒流加工, 磨削

Abstract:

Additive Manufacturing (AM) technology is obviously advantageous in producing parts with complex structures. However, it is difficult for the as-built surfaces of AM parts to meet the quality requirement, as the as-built surfaces are deteriorated by the inherent characteristics of powder adhesion and balling effect of metal AM technologies, e.g. Selective Laser Melting (SLM). The Abrasive Flow Machining (AFM) is used to polish the outer and inner surfaces of additively manufactured aluminum grille parts, with the abrasive media containing grits of different sizes. The variations of surface topology, material removal and surface roughness of the grille are considered by analyses of measurements of micro-topology and profiles during the AFM process. The experiment results show that clustering of molten metal balls due to the balling effect can be removed effectively from the grille surface, and the surface roughness is reduced from the initial 14 μm to the final 1.8 μm, with pretty good polishing effect being achieved for the outer and inner surfaces of the grille.

Key words: Additive Manufacturing (AM), balling effect, powder adhesion, aluminum alloy grille, abrasive flow machining, abrasive machining

中图分类号:

V261.2⁺5

高航, 李世宠, 付有志, 魏海波, 彭灿, 王宣平. 金属增材制造格栅零件磨粒流抛光[J]. 航空学报, 2017, 38(10): 421210-421210.

GAO Hang, LI Shichong, FU Youzhi, WEI Haibo, PENG Can, WANG Xuanping. Abrasive flow machining of additively manufactured metal grilling parts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(10): 421210-421210.

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金属增材制造格栅零件磨粒流抛光

Abrasive flow machining of additively manufactured metal grilling parts

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