Study on the wear of cutting-tools used in dry machining of Cu-10wt%Al-5wt%Ni-5wt%Fe alloy
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2021
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Defect and Diffusion Forum
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Resumo
Aluminium bronze alloys are special copper alloys that have a machinability rate from 20
to 40% compared to free cutting brasses, so the cutting parameters and type of tools suitable for
machining of these materials may be very different for other copper alloys. Also, due to the relative
high costs of the raw material, the absence of contamination of the chips by cutting fluids improve its
intrinsic resales value and encourage the use of machining process without coolant. The aim of this
work is to evaluate the tool wear mechanisms in the finishing machining of the Cu-10wt%Al-
5wt%Ni-5wt%Fe aluminium-bronze alloy with carbide and cermet inserts at different cutting speeds
under dry machining condition. The turning of material showed lower surface roughness in higher
speed conditions and better dimensional stability at lower speeds. It was observed the formation of
continuous chips, but of little volume occupied. The scanning electron microscopy (SEM) and energy
dispersive X-ray spectroscopy (EDS) analyses of tool wear show the adhesion as the main tool wear
mechanism, followed by abrasion. At the lower cutting speed, the adhesion wears affected
significantly the surface finish, reducing the tool life in comparison to the higher speeds.
Como referenciar
GUIMARAES, M.A.; SANTOS, G.A. dos; NASCIMENTO, M.S.; TERAM, R.; SANTOS, V.T. dos; SILVA, M.R. da; COUTO, A.A.; MACHADO, I.F. Study on the wear of cutting-tools used in dry machining of Cu-10wt%Al-5wt%Ni-5wt%Fe alloy. Defect and Diffusion Forum, v. 413, p. 194-200, 2021. DOI: 10.4028/www.scientific.net/DDF.413.194. Disponível em: http://repositorio.ipen.br/handle/123456789/32877. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.