CO2 cryogenic milling of Inconel 718: cutting forces and tool wear
| Autor: | L. Noberto López de Lacalle, Gorka Urbikain, Octavio Pereira, A. Celaya, Adrián Rodríguez, A. Fernández-Valdivielso |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Materials science Cryogenic milling CryoMQL Inconel 718 Machinability Alloy 02 engineering and technology engineering.material 01 natural sciences Biomaterials Machining 0103 physical sciences Tool wear Inconel lcsh:Mining engineering. Metallurgy 010302 applied physics Metallurgy Metals and Alloys Environmental milling Strain hardening exponent 021001 nanoscience & nanotechnology Surfaces Coatings and Films Coolant Carbon dioxide Ceramics and Composites Lubrication engineering 0210 nano-technology |
| Zdroj: | Journal of Materials Research and Technology, Vol 9, Iss 4, Pp 8459-8468 (2020) |
| ISSN: | 2238-7854 |
| Popis: | Machining Inconel 718 alloy is a challenge due to its low machinability. This thermal resistant alloy combines high strength even at high temperatures with strain hardening tendency that causes high forces and extreme cutting temperatures during the machining. These issues force industries to achieve suitable machining processes to deal with this kind of alloys and the high worldwide competitiveness. Nevertheless, environmental considerations must to be taken into account due to growing environmental concerns. In the work here presented, cryogenic cooling with external MQL lubrication (CryoMQL) working along with CO2 as internal coolant is proposed for milling Inconel 718 with the aim of not only improving from a technical point of view but also environmental. This technique was compared with other lubricooling techniques. The results show that internal CryoMQL improves tool life by 57% in comparison with emulsion coolant, achieving 120% if it is compared with MQL in stand-alone mode. |
| Databáze: | OpenAIRE |
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