Assessment of the surface integrity of ground cemented tungsten carbide cutting inserts and its influence on tool wear in turning of ferritic nodular cast iron

Autor(es)

Cruz, D. C. ; Sordi, V. L. ; Ventura, C. E. H.

• Tipo de documento: Artigo Científico
• Fonte: CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY; v. 37, p. 10-pg., 2022-04-02.

Resumo

In order to improve surface finish, geometric and dimensional tolerances of cemented tungsten carbide cutting tools produced by powder metallurgy, grinding is commonly applied. Due to the high thermal and mechanical loads generated during this process, surface and metallurgical characteristics are directly af-fected and, as a result, tool performance. Within this context, the influence of grinding wheel characteristics on surface integrity parameters, like surface and edge roughness, hardness and residual stress, was in-vestigated and cutting inserts ground under extreme conditions were applied in rough orthogonal turning of a ferritic nodular cast iron to evaluate their performance regarding tool life. The obtained results showed that higher compressive residual stress values, induced by a vitrified bonded diamond grinding wheel with grain size of 46 mu m, contributed to increase tool life, as a protective layer of adhered material was formed on the cutting edge. Flank wear by abrasion was thus avoided and crack formation was the determining factor for the end of the tests.(c) 2022 CIRP. (AU)

• Processo FAPESP: 17/12309-7 - EMU concedido no processo 15/15622-2: microscópio para análise de imagens tridimensionais
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 17/12304-5 - EMU concedido no processo 15/15622-2: retificadora CNC para preparação de insertos de corte
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 18/24614-1 - Plano de Aplicação Ano 2018 da Parcela da Reserva Técnica (Base 2017) para Custos de InfraEstrutura Institucional Centro de Ciências Exatas e de Tecnologia (CCET) UFSCAR
• Beneficiário: Luiz Fernando de Oriani e Paulillo
• Modalidade de apoio: Auxílio à Pesquisa - Reserva Técnica para Infraestrutura Institucional de Pesquisa
• Processo FAPESP: 15/15622-2 - Influência dos parâmetros de retificação na fabricação de insertos de metal duro sobre seu desempenho no torneamento de uma liga de titânio
• Beneficiário: Carlos Eiji Hirata Ventura
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores