Effect of grinding with different CBN grains applied to austempered ductile iron linked to quality and industrial cost

Autor(es)

de Souza, Rodrigo Rafaga ^[1] ; de Moraes, Douglas Lyra ^[1] ; Garcia, Mateus Vinicius ^[1] ; Lopes, Jose Claudio ^[1] ; Ribeiro, Fernando Sabino Fonteque ^[2] ; de Mello, Hamilton Jose ^[1] ; Sanchez, Luiz Eduardo De Angelo ^[1] ; Aguiar, Paulo Roberto ^[3] ; Bianchi, Eduardo Carlos ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Julio de Mesquita Filho, Dept Mech Engn, Bauru Campus, Bauru, SP - Brazil

^[2] Fed Inst Parana, Dept Control & Ind Proc, Jacarezinho Campus, Jacarezinho, Parana - Brazil

^[3] Sao Paulo State Univ Julio de Mesquita Filho, Dept Elect Engn, Bauru Campus, Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY; v. 113, n. 3-4, p. 807-820, MAR 2021.
• Citações Web of Science: 0

Resumo

The grinding process consists of an essential stage of manufacture that is justified by the process' ability to guarantee precise dimensions and provide an excellent surface finish. In the present study, two grinding wheels of cubic boron nitride (CBN) abrasive grains with different friability (GL and GS) were used to perform the cylindrical grinding of the austempered ductile iron (ADI). This work compared the individual performance of each wheel, with CBN GL being of low friability and CBN GS of high. During machining with three feed rates (0.5, 1.0, and 1.5 mm/min), the conventional lubri-refrigeration method was used. In the workpieces analyzed, the tests of surface roughness, roundness deviation, specific energy, G-ratio, acoustic emission, cost analysis, microhardness, confocal microscopy, and optical microscopy were applied. The tests showed that, in almost all the output parameters, the best results obtained were using the CBN GL wheel with less friability. However, in the analysis of acoustic emission and specific energy, the results presented that the GS wheel obtained the best results; as it is a more friable tool, the efforts applied during the grinding of the GS wheel are less. Also, the microstructure analyses showed that both wheels were able to carry out the process without causing changes in the workpieces' mechanical properties. The cost analysis of the inputs showed that the increase in the feed rate produces the lowest cost. (AU)

• Processo FAPESP: 19/24933-2 - Efeito da aplicação de MQL óleo-água com anticorrosivo na retificação de alumina
• Beneficiário: Douglas Lyra de Moraes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 18/22661-2 - Desempenho da aplicação de nitrogênio líquido na retificação cilíndrica da liga de níquel Inconel 718
• Beneficiário: Mateus Vinicius Garcia
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica