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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Global strategy of grinding wheel performance evaluation applied to grinding of superalloys

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Autor(es):
Souza, Adriel Magalhses [1] ; da Silva, Eraldo Jannone [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY; v. 57, p. 113-126, MAY 2019.
Citações Web of Science: 1
Resumo

For grinding of superalloys, Difficult to Grind (DTG) materials, superabrasive grinding wheels of cBN (cubic boron nitride) with vitrified bond are considered the first choice for light roughing and finishing due to their superior performance when compared to conventional grinding wheels. However, there are limitations on the use of cBN wheels due to the higher initial cost of the cutting tool and the need for dressing systems with rotary tools. Aiming at reducing operational costs, the use of conventional grinding wheels with ceramic grains and high retention binder and lower bond-abrasive ratio is becoming increasingly common. In this scenario of introduction of new abrasive tools, it is necessary to use tools to evaluate the comparative performance of grinding wheels, which can encompass different aspects of the grinding process under study and which includes technical requirements of the component to be ground, as well as indicators of sustainability of the process. Thus, the objective of this work is to propose an evaluate strategy of the performance of grinding wheels whose methodology of analysis encompasses, in a coordinated way, traditional evaluation parameters and sustainability criteria (economic, environmental, and social) and that can be applied, as a study of case, in the grinding of superalloys for engine components, with different degrees of grindability. A high-performance engineered conventional grinding wheel and a vitrified cBN wheel were comparatively evaluated. The proposed methodology included the determination of the characteristic curve of a grinding wheel, coordinated analysis of the output parameters of the grinding process and the introduction of sustainability indicators. The results show the proposed global strategy proved to be viable and effective in comparing different grinding wheel specifications by encompassing aspects of the economic, environmental, and social performance of the grinding process. As a conclusion, the feasibility of the high-performance conventional wheel in substitution of the cBN wheel was confirmed for the grinding of the tested superalloys. (AU)

Processo FAPESP: 15/22121-0 - Avaliação de indicadores de sustentabilidade para processos de usinagem por abrasão
Beneficiário:Eraldo Jannone da Silva
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/12425-4 - Retificação de superligas com rebolos de alto rendimento: avaliação de desempenho do processo
Beneficiário:Adriel Magalhães Souza
Linha de fomento: Bolsas no Brasil - Mestrado