Characterization of tool wear when machining Alloy 718 with high-pressure cooling using conventional and surface-modified WC–Co tools
Journal article, 2017

Coolant supplied by high pressure into the cutting zone has shown to lower thermal loads on the tool when machining difficult-to-cut materials as the Alloy 718. In this study, we investigate how the combination of high-pressure cooling and tool–surface modifications can lead to further improvements regarding tool life. The general approach is to enhance the coolant–tool interaction by increasing the contact area. Therefore, we machined cooling features into flank and rake faces of commercially available cemented tungsten carbide inserts. In this way, the surface area was increased by ~ 12%. After the cutting tests, the tools were analyzed by scanning electron microscopy combined with energy-dispersive X-ray spectroscopy. Compared with conventional tools, the tool modifications reduced the flank wear by 45% for the investigated cutting parameters. Furthermore, we were able to significantly increase the cutting speed and feed rate without failure of the tool. The investigated surface modifications have great potential to enhance the productivity of metal cutting processes.


wear characterization

high pressure jet assisted machining

tool modification


Philipp Hoier

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Uta Klement

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Nageswaran Tamil Alagan

University West

Tomas Beno

University West

Anders Wretland

GKN Aerospace Services

Journal of Superhard Materials

1063-4576 (ISSN) 1934-9408 (eISSN)

Vol. 39 3 178-185

Areas of Advance


Materials Science

Subject Categories

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials



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