Browsing by Author "Taskesen, A."

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The Effects of Cutting Speed on Tool Wear and Tool Life When Machining Inconel 718 With Ceramic Tools
(Elsevier Sci Ltd, 2007) Altin, A.; Nalbant, M.; Taskesen, A.
In this study, the effects of cutting speed on tool wear and tool life when machining Inconel 718 nickel-based super alloy have been experimentally investigated. A series of tool life experiments has been carried out using silicon nitrite based and whisker reinforced ceramic tools which have two different geometries and three different ISO qualities with 10% water additive cutting fluid. The experiment results show that crater and flank wears are usually dominant wear types in ceramic square type (SNGN) inserts while flank and notch wear are dominant in round type (RNGN) inserts. Minimum flank wear is seen with SNGN tools at low cutting speeds while it is seen with RNGN tools at high cutting speeds. (c) 2006 Elsevier Ltd. All rights reserved.
The Effects of Cutting Speed on Tool Wear and Tool Life When Turning Inconel 718 With Ceramic and Coated Carbide Inserts
(Springer india, 2007) Taskesen, A.; Altin, A.; Nalbant, M.
The effects of cutting speed on tool wear and tool life when machining Inconel 718 with ceramics and carbide inserts are experimentally investigated at different cutting conditions. In machining tests various ceramics, coated and uncoated carbide cutting tools having different geometries are used under various cutting speeds. The results show that square type ceramic inserts are subjected to crater and flank wear while round type ceramics are subjected to flank wear and depth of cut notch wear. At lower speeds (150 m/min) whisker reinforced square type ceramic inserts are found to be best tools for cutting Inconel 718 while round type inserts are found to be best tool at higher cutting speeds. Generally, flank wear, plastic deformation and notch wear are effective for coated carbides while flank wear and notch wear are seen with uncoated inserts. In addition, the wear performance of uncoated carbide tools is found to be higher than that of coated carbide tools at certain speeds.