Analysis of the coefficient of friction at the workpiece-tool interface in milling of high strength compacted graphite cast irons

Silva, L.R.R. da; Ruzzi, Rodrigo de Souza; Teles, Vinícius; Sales, Wisley Falco; Guesser, Wilson Luiz; Machado, Álisson Rocha

doi:10.1016/j.wear.2019.01.111

Cited by 29 publications

(13 citation statements)

References 33 publications

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“…In Table 2, coating thickness, friction coefficient and wear rate values of non-boronized and boronized samples are given. When the wear tests of steels are examined in the literature, the coefficient of friction changes between 0.5 -0.7 [42,43,44] and this shows that this study is consistent with the literature. On the other hand, surface investigators such as Kovaci et al [16], Cuao-Moreu et al [45], Teng et al [46] and He et al [47] have studied the tribological properties of metal specimens by coating different metal surfaces with different materials, temperature, time and method.…”

Section: Wear Propertiessupporting

confidence: 88%

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Mertgenç

2020

Sakarya University Journal of Science

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The Nitronic 50 steel is a nitrogen containing stainless steel, which has a high corrosion resistance, and high strength but its surface resistance against wear is low, making it extremely limited to use in areas subject to wear. In this study, in order to improve the material surface and to investigate its effect on tribological properties, boronizing process was carried out by used pack boriding method at 850 ° C, 900 ° C and 950 ° C for 4 hours. As a result of coating process, the boride layer has a smooth and flat structure in SEM investigations, the coating thickness varies between 9 µm and 36 µm and the boride layer thickness increases with increasing temperature. While the hardness of the uncoated material was around 250 HV0.05, the surface hardness of the material reached up to 1.712 HV0.05 with the coating process and increased about 7 times. According to XRD analysis, the surface of the coating layer consisted of phases FeB, CrB, Ni3B, Fe2B, Cr2B and MnB. Wear behavior was performed by ball-on-disk wear test in dry environment. The friction coefficient and wear rate decreases with increasing temperature, while the wear resistance is increased by 20 times compared to unboronized sample. When the wear tracks were examined, the uncoated Nitronic 50 had an adhesive wear mechanism, on the other hand the boronized samples had an adhesive and abrasive wear mechanism together. The Rockwell-C adhesion test was carried out under a load of 1.471 N and the resulting surface damages were evaluated according to the quality map. Boronized steel at 850 °C is defined as HF3 type, at 900 °C and 950 °C at boronized steel it is defined as HF4 type and adhesion is acceptable.

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Section: Wear Propertiessupporting

confidence: 88%

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Mertgenç

2020

Sakarya University Journal of Science

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“…The machining center was adapted as an open tribometer, in a similar confi guration of that used by Silva, Ruzzi et al 17 . Before each trial, the workpiece was pre-machined to and Rz = 2.515 ± 0.220 μm, ensuring a similar tribosystem for each repetition.…”

Section: Machining Testsmentioning

confidence: 99%

Thickness Control of Coatings Deposited by Co2 Laser for Aeronautical Turbine Blades

Azevedo¹,

Mazur²,

Chagas³

et al. 2021

Engenharia Mecânica: Inovações Tecnológicas De Elevado Valor

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Direitos para esta edição cedidos à Atena Editora pelos autores. Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica. A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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“…All simulations have been conducted in 50 steps. Shear friction factor has been defined equal to 0.8, 35 and convective heat transfer coefficient for dry machining equal to 11 W/m 2 K. 36 The formulation method that has been used for the simulations was Lagrangian incremental method since machining operations, like face milling, include discontinuous effects, such as chip formation, and are not steady-state operations. 37 The material of the work piece that has been chosen in the FEM simulations was CGI 450.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Indirect online tool wear monitoring and model-based identification of process-related signal

Stavropoulos

Papacharalampopoulos

Souflas

2014

Advances in Mechanical Engineering

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Tool wear monitoring using vibrations is a complex task, due to various simultaneously occurring vibration sources and due to distortion of the signals acquired. This work investigates the mechanism by which tool wear information is concealed within acquired process-intrinsic vibration signals. Excluding other sources of vibration, such as machine-related, is attempted utilizing process simulations. As a case study, face milling is performed for three different cutting speeds. At first, the resulted simulated wear curves have been compared with experimental ones resulted under the same cutting conditions. Then, a quantification of the effect of tool wear on the acquired signals is presented.

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Analysis of the coefficient of friction at the workpiece-tool interface in milling of high strength compacted graphite cast irons

Cited by 29 publications

References 33 publications

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Examination of Wear and Rockwell-C adhesion Properties of Nitronic 50 Steel Coated with Pack Boriding Method

Thickness Control of Coatings Deposited by Co2 Laser for Aeronautical Turbine Blades

Indirect online tool wear monitoring and model-based identification of process-related signal

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