金属增材制造格栅零件磨粒流抛光

doi:10.7527/S1000-6893.2017.421210

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (10): 421210-421210.doi: 10.7527/S1000-6893.2017.421210

• Material Engineering and Mechanical Manufacturing • Previous Articles Next Articles

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)

Abstract

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

CLC Number:

V261.2⁺5

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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Abrasive flow machining of additively manufactured metal grilling parts

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