MQL Cutting of Inconel 718 with a Super Lattice Coating Tool

Toshiyuki Obikawa; Y. Kamata

doi:10.4028/www.scientific.net/KEM.291-292.433

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 291-292MQL Cutting of Inconel 718 with a Super Lattice...

MQL Cutting of Inconel 718 with a Super Lattice Coating Tool

Abstract:

MQL (Minimum Quantity Lubrication) technology was applied to finish-turning of a nickel base superalloy, Inconel 718, with a PVD coated carbide tool with a super lattice coating of TiN/AlN. Cutting lubricant used for MQL was a biodegradable synthesis ester, which was supplied to the cutting point with compressed air from the both sides of flank and rake faces of the tool. At a cutting speed of 1.0 m/s and an air supply pressure of 0.4 MPa, MQL cutting showed longer tool life and better surface finish than both the dry cutting and wet cutting. When increasing the pressure of the air supply from 0.40 MPa to 0.60 MPa, however, the corner wear, the most predominant wear in all the cutting conditions in this study, increased. When the cutting speed was increased to 1.5 m/s, the tool life in MQL decreased drastically. These results suggested that when finishing Inconel 718, the special care must be taken for choosing the pressure of air supply and cutting speed. The obtained results provided a useful understanding of the complicated influence of MQL on the cutting performance of Inconel 718.

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Periodical:

Key Engineering Materials (Volumes 291-292)

Pages:

433-438

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.291-292.433

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Online since:

August 2005

Authors:

Toshiyuki Obikawa, Y. Kamata

Keywords:

Coated Tool, Inconel 718, MQL Cutting, Super Lattice Coating

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