High speed turning of Inconel 718 using PVD-coated PCBN tools

Five different coatings and two PCBN grades were evaluated when high speed turning Inconel 718. Tool life was 40% higher when employing TiSiN coated over uncoated inserts at 200 m/min. When operating at 300-450 m/min however, coatings provided no appreciable benefit. Workpiece surface roughness vari...

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Bibliographic Details
Published in:CIRP annals 2016, Vol.65 (1), p.89-92
Main Authors: Soo, Sein Leung, Khan, Sarmad A., Aspinwall, David K., Harden, Peter, Mantle, Andrew L., Kappmeyer, Gregor, Pearson, David, M'Saoubi, Rachid
Format: Article
Language:English
Subjects:
Coatings
High speed
Inserts
Nickel base alloys
Superalloys
Turning
Turning (machining)
Workpieces
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Summary:Five different coatings and two PCBN grades were evaluated when high speed turning Inconel 718. Tool life was 40% higher when employing TiSiN coated over uncoated inserts at 200 m/min. When operating at 300-450 m/min however, coatings provided no appreciable benefit. Workpiece surface roughness varied between similar to 0.25 and 1.05 mu m Ra while cutting forces were
ISSN:0007-8506
DOI:10.1016/j.cirp.2016.04.044