Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/15010 https://doi.org/10.14393/ufu.di.2015.456 |
Resumo: | Machining of titanium alloys by conventional processes has always been a concern topic of researchers and practitioners from metal-working industry. So, many works related to these processes have been developed to improve their machinability and to reduce manufacturing costs. However, little information has been reported in the literature about studies with regard the machinability of titanium alloys employing abrasive processes, specially grinding. The high cost of the material and the lack of titanium components that need to be ground are some reasons for this. In addition, these alloys have low thermal conductivity, which impairs use of conventional abrasive tools, because it increases the probability of occurrence of thermal damages. Into this context, it is important to find appropriated lubri-coolant conditions for efficient grinding of titanium and its alloys. The grinding parameters varied were: radial depth of cut (ae) of 10 μm and 20 μm, 2 and 3 passes and also the cutting fluid delivery technique (conventional one and the minimum quantity lubrication (MQL). Graphene nanoplatelets dispersed in the cutting fluid were also tested via MQL technique. The cutting fluid employed was the vegetable-based synthetic type for all techniques employed. Output variables were the surface roughness, the microhardness and the consumed electrical power. Images of machined surfaces and of the wheel were also obtained and analyzed. The results showed that addition of the graphene particles on the cutting fluid can improve the process performance, leading to improvement of finishing, lower variation in microhardness and lower electric power required in the grinding wheel motor, when the highest radial depth of cut was employed. Also, it was observed that the strategy of using 2 or 3 passes during grinding did not show significant effect on finishing on the conditions investigated. No visual presence of burning was observed on the machined surfaces under the conditions investigated. |
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Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafenoPeripheral surface grinding of Ti-6Al-4V with graphene nanoplatelets dispersed in cutting fluidRetificaçãoLiga Ti-6Al-4VFluido de corteGrafenoPenetração de trabalhoRugosidadeMicrodurezaUsinagemLigas de titânioGrindingTi-6Al-4V alloyRadial depth of cutSurface roughnessMicrohardnessCNPQ::ENGENHARIAS::ENGENHARIA MECANICAMachining of titanium alloys by conventional processes has always been a concern topic of researchers and practitioners from metal-working industry. So, many works related to these processes have been developed to improve their machinability and to reduce manufacturing costs. However, little information has been reported in the literature about studies with regard the machinability of titanium alloys employing abrasive processes, specially grinding. The high cost of the material and the lack of titanium components that need to be ground are some reasons for this. In addition, these alloys have low thermal conductivity, which impairs use of conventional abrasive tools, because it increases the probability of occurrence of thermal damages. Into this context, it is important to find appropriated lubri-coolant conditions for efficient grinding of titanium and its alloys. The grinding parameters varied were: radial depth of cut (ae) of 10 μm and 20 μm, 2 and 3 passes and also the cutting fluid delivery technique (conventional one and the minimum quantity lubrication (MQL). Graphene nanoplatelets dispersed in the cutting fluid were also tested via MQL technique. The cutting fluid employed was the vegetable-based synthetic type for all techniques employed. Output variables were the surface roughness, the microhardness and the consumed electrical power. Images of machined surfaces and of the wheel were also obtained and analyzed. The results showed that addition of the graphene particles on the cutting fluid can improve the process performance, leading to improvement of finishing, lower variation in microhardness and lower electric power required in the grinding wheel motor, when the highest radial depth of cut was employed. Also, it was observed that the strategy of using 2 or 3 passes during grinding did not show significant effect on finishing on the conditions investigated. No visual presence of burning was observed on the machined surfaces under the conditions investigated.Fundação de Amparo a Pesquisa do Estado de Minas GeraisMestre em Engenharia MecânicaA usinagem das ligas de titânio pelos processos convencionais sempre foi motivo de preocupação para pesquisadores e empresários do setor metal-mecânico. Por isso, muitos trabalhos relacionados à usinagem dessas ligas têm sido investigados visando melhoria da usinabilidade e redução dos custos de processamento. Mas muito pouco tem sido relatado na literatura sobre trabalhos que estudaram a usinabilidade das ligas de titânio ao empregar processos que utilizam ferramentas abrasivas. O custo do material e a baixa procura pela retificação de componentes feitos em titânio são razões para isso. Além disso, estas ligas são pobres condutoras de calor, o que dificulta ainda mais o emprego de ferramentas abrasivas, já que a probabilidade de a peça sofrer por danos de origem térmica será ainda maior. Neste contexto, encontrar as condições de lubri-refrigeração adequadas para o processo de retificação das ligas de titânio pode tornar o mesmo mais eficiente. Neste sentido, este trabalho apresenta os resultados do processo de retificação plana tangencial da liga Ti-6Al-4V utilizando fluido de corte com adição de partículas de grafeno. Os parâmetros de corte utilizados foram: dois valores de penetração de trabalho (ae), 10 μm e 20 μm, em 2 e 3 passes e variando a forma de aplicação de fluido: em abundância, via técnica de mínima quantidade de lubrificante (MQL) e MQL utilizando fluido com adição de grafeno. O fluido de corte empregado foi o do tipo sintético de base vegetal para todas as técnicas de aplicação de fluido. As variáveis de saída avaliadas foram o acabamento, a microdureza e a potência elétrica consumida. Imagens das superfícies usinadas e do rebolo foram também avaliadas. Os resultados mostraram que a adição de partículas de grafeno ao fluido de corte pode melhorar o comportamento do processo, levando à melhoria da rugosidade superficial da liga de Ti-6Al-4V, como também a uma menor variação do valores de microdureza abaixo da superfície e menor potência elétrica exigida no motor do rebolo quando a penetração de trabalho maior for utilizada. Os resultados mostraram ainda pouca influência da estratégia em se utilizar 2 ou 3 passes no acabamento produzido nas condições investigadas. Não foram observadas queimas de aspecto visual nas superfícies das amostras nas condições investigadas.Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Engenharia MecânicaEngenhariasUFUSilva, Rosemar Batista dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706048P0Machado, álisson Rochahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781203T2Diniz, Anselmo Eduardohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787257TOMello, Antonio Vitor de2016-06-22T18:41:08Z2016-04-062016-06-22T18:41:08Z2015-09-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfMELLO, Antonio Vitor de. Peripheral surface grinding of Ti-6Al-4V with graphene nanoplatelets dispersed in cutting fluid. 2015. 95 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. DOI https://doi.org/10.14393/ufu.di.2015.456https://repositorio.ufu.br/handle/123456789/15010https://doi.org/10.14393/ufu.di.2015.456porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFU2021-07-20T19:30:48Zoai:repositorio.ufu.br:123456789/15010Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2021-07-20T19:30:48Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno Peripheral surface grinding of Ti-6Al-4V with graphene nanoplatelets dispersed in cutting fluid |
title |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
spellingShingle |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno Mello, Antonio Vitor de Retificação Liga Ti-6Al-4V Fluido de corte Grafeno Penetração de trabalho Rugosidade Microdureza Usinagem Ligas de titânio Grinding Ti-6Al-4V alloy Radial depth of cut Surface roughness Microhardness CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
title_full |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
title_fullStr |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
title_full_unstemmed |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
title_sort |
Retificação da liga Ti-6Al-4V, com fluido de corte contendo partículas de grafeno |
author |
Mello, Antonio Vitor de |
author_facet |
Mello, Antonio Vitor de |
author_role |
author |
dc.contributor.none.fl_str_mv |
Silva, Rosemar Batista da http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706048P0 Machado, álisson Rocha http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781203T2 Diniz, Anselmo Eduardo http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787257TO |
dc.contributor.author.fl_str_mv |
Mello, Antonio Vitor de |
dc.subject.por.fl_str_mv |
Retificação Liga Ti-6Al-4V Fluido de corte Grafeno Penetração de trabalho Rugosidade Microdureza Usinagem Ligas de titânio Grinding Ti-6Al-4V alloy Radial depth of cut Surface roughness Microhardness CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
topic |
Retificação Liga Ti-6Al-4V Fluido de corte Grafeno Penetração de trabalho Rugosidade Microdureza Usinagem Ligas de titânio Grinding Ti-6Al-4V alloy Radial depth of cut Surface roughness Microhardness CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
Machining of titanium alloys by conventional processes has always been a concern topic of researchers and practitioners from metal-working industry. So, many works related to these processes have been developed to improve their machinability and to reduce manufacturing costs. However, little information has been reported in the literature about studies with regard the machinability of titanium alloys employing abrasive processes, specially grinding. The high cost of the material and the lack of titanium components that need to be ground are some reasons for this. In addition, these alloys have low thermal conductivity, which impairs use of conventional abrasive tools, because it increases the probability of occurrence of thermal damages. Into this context, it is important to find appropriated lubri-coolant conditions for efficient grinding of titanium and its alloys. The grinding parameters varied were: radial depth of cut (ae) of 10 μm and 20 μm, 2 and 3 passes and also the cutting fluid delivery technique (conventional one and the minimum quantity lubrication (MQL). Graphene nanoplatelets dispersed in the cutting fluid were also tested via MQL technique. The cutting fluid employed was the vegetable-based synthetic type for all techniques employed. Output variables were the surface roughness, the microhardness and the consumed electrical power. Images of machined surfaces and of the wheel were also obtained and analyzed. The results showed that addition of the graphene particles on the cutting fluid can improve the process performance, leading to improvement of finishing, lower variation in microhardness and lower electric power required in the grinding wheel motor, when the highest radial depth of cut was employed. Also, it was observed that the strategy of using 2 or 3 passes during grinding did not show significant effect on finishing on the conditions investigated. No visual presence of burning was observed on the machined surfaces under the conditions investigated. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-09 2016-06-22T18:41:08Z 2016-04-06 2016-06-22T18:41:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
MELLO, Antonio Vitor de. Peripheral surface grinding of Ti-6Al-4V with graphene nanoplatelets dispersed in cutting fluid. 2015. 95 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. DOI https://doi.org/10.14393/ufu.di.2015.456 https://repositorio.ufu.br/handle/123456789/15010 https://doi.org/10.14393/ufu.di.2015.456 |
identifier_str_mv |
MELLO, Antonio Vitor de. Peripheral surface grinding of Ti-6Al-4V with graphene nanoplatelets dispersed in cutting fluid. 2015. 95 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. DOI https://doi.org/10.14393/ufu.di.2015.456 |
url |
https://repositorio.ufu.br/handle/123456789/15010 https://doi.org/10.14393/ufu.di.2015.456 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia BR Programa de Pós-graduação em Engenharia Mecânica Engenharias UFU |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia BR Programa de Pós-graduação em Engenharia Mecânica Engenharias UFU |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFU instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
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UFU |
institution |
UFU |
reponame_str |
Repositório Institucional da UFU |
collection |
Repositório Institucional da UFU |
repository.name.fl_str_mv |
Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
diinf@dirbi.ufu.br |
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1805569677883080704 |