Registro fonte: Wear analysis of PVD-coated twist drills under MQL

Wear analysis of PVD-coated twist drills under MQL

Purpose - Deep drilling of hardened steels is a difficult machining operation because of the high wear level of tools. This paper aims to present the main wear mechanisms observed in physical vapor deposition (PVD)-coated twist drills during deep drilling of SAE4144M steel under minimum quantity lub...

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Principais autores:	Cardoso, Marlon José, Polli, Milton Luiz, Pintaúde, Giuseppe
Formato:	Artigo
Idioma:	Inglês
Publicado em:	Curitiba 2024
Assuntos:	Lubrificação e lubrificantes Revestimentos - Processos Usinagem Desgaste mecânico Tribologia Lubrication and lubricants Coating processes Machining Mechanical wear Tribology CNPQ::ENGENHARIAS::ENGENHARIA MECANICA
Acesso em linha:	http://repositorio.utfpr.edu.br/jspui/handle/1/33469 https://doi.org/10.1108/ILT-10-2016-0243
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id	riut-1-33469
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spelling	riut-1-334692024-02-27T06:07:35Z Wear analysis of PVD-coated twist drills under MQL Cardoso, Marlon José Polli, Milton Luiz Pintaúde, Giuseppe Lubrificação e lubrificantes Revestimentos - Processos Usinagem Desgaste mecânico Tribologia Lubrication and lubricants Coating processes Machining Mechanical wear Tribology CNPQ::ENGENHARIAS::ENGENHARIA MECANICA Purpose - Deep drilling of hardened steels is a difficult machining operation because of the high wear level of tools. This paper aims to present the main wear mechanisms observed in physical vapor deposition (PVD)-coated twist drills during deep drilling of SAE4144M steel under minimum quantity lubrication, assessed in the production of injection holders. Design/methodology/approach - Two PVD coatings were tested: TiAlN and AlCrN, industrially processed, the last one being a multilayer coating. The workpiece was heat treated for a hardness of 39 HRC to be applied in a diesel engine component. The tests were performed in an industrial environment for a fixed number of holes. Two levels of cutting speed and feed rate were selected for the experiments. In addition, minimum quantity of lubrication (MQL) was compared with conventional lubrication. Scanning electron microscope was used to reveal the wear mechanisms. Findings - Spalling of PVD-coating was revealed for conventional lubrication, while adhesion was observed in MQL conditions. The use of multilayered AlCrN-based coating promoted a significant reduction of adhered material on the twist drill, which is the reason for this selection in industrial operation. Practical implications - Results showed that the MQL regime can be applied for this industrial application. Originality/value - A detailed description of wear mechanisms, which allows a suitable selection of coating and machining variables was found for a very difficult operation, using a more economic process in terms of lubrication. 2024-02-26T11:27:15Z 2024-02-26T11:27:15Z 2018-10 article CARDOSO, Marlon José; POLLI, Milton Luiz; PINTAÚDE, Giuseppe. Wear analysis of PVD-coated twist drills under MQL, London, v. 70, n. 9, p. 1664-1669, out. 2018. DOI: https://www.emerald.com/insight/content/doi/10.1108/ILT-10-2016-0243/full/html. Disponível em: https://www.emerald.com/insight/content/doi/10.1108/ILT-10-2016-0243/full/html. 0036-8792 http://repositorio.utfpr.edu.br/jspui/handle/1/33469 https://doi.org/10.1108/ILT-10-2016-0243 eng Industrial lubrication and tribology https://www.emerald.com/insight/content/doi/10.1108/ILT-10-2016-0243/full/html openAccess Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ application/pdf Curitiba Gra-bretanha
institution	Universidade Tecnológica Federal do Paraná
collection	RIUT
language	Inglês
topic	Lubrificação e lubrificantes Revestimentos - Processos Usinagem Desgaste mecânico Tribologia Lubrication and lubricants Coating processes Machining Mechanical wear Tribology CNPQ::ENGENHARIAS::ENGENHARIA MECANICA
spellingShingle	Lubrificação e lubrificantes Revestimentos - Processos Usinagem Desgaste mecânico Tribologia Lubrication and lubricants Coating processes Machining Mechanical wear Tribology CNPQ::ENGENHARIAS::ENGENHARIA MECANICA Cardoso, Marlon José Polli, Milton Luiz Pintaúde, Giuseppe Wear analysis of PVD-coated twist drills under MQL
description	Purpose - Deep drilling of hardened steels is a difficult machining operation because of the high wear level of tools. This paper aims to present the main wear mechanisms observed in physical vapor deposition (PVD)-coated twist drills during deep drilling of SAE4144M steel under minimum quantity lubrication, assessed in the production of injection holders. Design/methodology/approach - Two PVD coatings were tested: TiAlN and AlCrN, industrially processed, the last one being a multilayer coating. The workpiece was heat treated for a hardness of 39 HRC to be applied in a diesel engine component. The tests were performed in an industrial environment for a fixed number of holes. Two levels of cutting speed and feed rate were selected for the experiments. In addition, minimum quantity of lubrication (MQL) was compared with conventional lubrication. Scanning electron microscope was used to reveal the wear mechanisms. Findings - Spalling of PVD-coating was revealed for conventional lubrication, while adhesion was observed in MQL conditions. The use of multilayered AlCrN-based coating promoted a significant reduction of adhered material on the twist drill, which is the reason for this selection in industrial operation. Practical implications - Results showed that the MQL regime can be applied for this industrial application. Originality/value - A detailed description of wear mechanisms, which allows a suitable selection of coating and machining variables was found for a very difficult operation, using a more economic process in terms of lubrication.
format	Artigo
author	Cardoso, Marlon José Polli, Milton Luiz Pintaúde, Giuseppe
author_sort	Cardoso, Marlon José
title	Wear analysis of PVD-coated twist drills under MQL
title_short	Wear analysis of PVD-coated twist drills under MQL
title_full	Wear analysis of PVD-coated twist drills under MQL
title_fullStr	Wear analysis of PVD-coated twist drills under MQL
title_full_unstemmed	Wear analysis of PVD-coated twist drills under MQL
title_sort	wear analysis of pvd-coated twist drills under mql
publisher	Curitiba
publishDate	2024
citation	CARDOSO, Marlon José; POLLI, Milton Luiz; PINTAÚDE, Giuseppe. Wear analysis of PVD-coated twist drills under MQL, London, v. 70, n. 9, p. 1664-1669, out. 2018. DOI: https://www.emerald.com/insight/content/doi/10.1108/ILT-10-2016-0243/full/html. Disponível em: https://www.emerald.com/insight/content/doi/10.1108/ILT-10-2016-0243/full/html. 0036-8792
url	http://repositorio.utfpr.edu.br/jspui/handle/1/33469 https://doi.org/10.1108/ILT-10-2016-0243
_version_	1810427778860843008
score	10,814766

Wear analysis of PVD-coated twist drills under MQL

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