Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Characterization of tool wear when machining Alloy 718 with high pressure cooling using conventional and surface-modified WC–Co tools
Репозиторій DSpace/Manakin
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Characterization of tool wear when machining Alloy 718 with high pressure cooling using conventional and surface-modified WC–Co tools
Тема:
Исследование процессов обработки
УДК:
621.9.015.079:621.892
Посилання:
Characterization of tool wear when machining Alloy 718 with high pressure cooling using conventional and surface-modified WC–Co tools / P. Hoier, U. Klement, N. Tamil Alagan, T. Beno, A. Wretland // Сверхтвердые материалы. — 2017. — № 3. — С. 39-47. — Бібліогр.: 18 назв. — англ.
Підтримка:
We like to thank the Region Västragötaland for funding in association with the PROSAM project. Sandvik Coromant is acknowledged for the support in manufacturing of inserts. Special thanks go to Andreas Gustafsson at the University West for helping with the insert design and Andreas Lindberg at GKN Aerospace Engine Systems AB for helping with experiments. Furthermore, Peter Sotkovszki at Chalmers is acknowledged for assistance in etching of the tool.
Дата:
2017
Переглядів:
473
Завантажень:
556
Анотація:
Coolant supplied by high pressure into the cutting zone has shown the 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.
