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Abrasive and non-conventional post-processing techniques to improve surface finish of additively manufactured metals: a review

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Autor(es):
De Oliveira, Deborah ; Gomes, Milla Caroline ; Dos Santos, Aline Goncalves ; Barros Ribeiro, Kandice Suane ; Vasques, Iago Jose ; Coelho, Reginaldo Teixeira ; Da Silva, Marcio Bacci ; Hung, Nguyen Wayne
Número total de Autores: 8
Tipo de documento: Artigo Científico
Fonte: PROGRESS IN ADDITIVE MANUFACTURING; v. N/A, p. 18-pg., 2022-07-21.
Resumo

Metal additive manufacturing (MAM) has attracted global industry and academia due to its flexibility and ability to achieve complex geometry. The inherent rough surfaces are of concerns and need to be addressed to meet the strict requirement of critical engineering components. This paper reviews the working principles for common MAM processes and summarizes current post-processing techniques for surface finish improvement. Relevant finishing techniques using abrasives and non-conventional techniques, such as grinding, polishing, laser, peening, buffing, and electrochemical polishing are reviewed, and typical results are documented for different AM processes. Limitation of each process and enhancing techniques using magnetism, ultrasonic, and pulsed current for selected processes are presented. Post processing not only reduces surface roughness, but also contributes to dimensional and form tolerances, and prolongs long-term fatigue and creep life of AM metals. Although post-processing techniques can effectively remove surface defects to achieve submicron surface finish, controlling of surface defects that extend deeply below a surface is still a challenge. Future hybrid system that combines AM and a non-traditional post-process would meet the requirement for MAM. (AU)

Processo FAPESP: 19/08926-6 - Processamento pós-avançado para o melhoramento da qualidade dos componentes de engenharia impressos em 3D
Beneficiário:Reginaldo Teixeira Coelho
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 19/00343-1 - Controle do processo de directed energy deposition para fabricação de componentes de Geometria complexa por Manufatura Aditiva (MA)
Beneficiário:Kandice Suane Barros Ribeiro
Modalidade de apoio: Bolsas no Brasil - Doutorado
Processo FAPESP: 16/11309-0 - Estudo, desenvolvimento e aplicação de processo híbrido: Manufatura Aditiva (Ma) + High Speed Machining/Grinding (HSM/G)
Beneficiário:Reginaldo Teixeira Coelho
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 20/03110-5 - Caracterização de WC-Co depositados por meio de manufatura aditiva (ma) utilizando o método Direct Energy Deposition (DED)
Beneficiário:Gabriel Viana Figueiredo
Modalidade de apoio: Bolsas no Brasil - Iniciação Científica