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Title: A study on ultrasonic elliptical vibration cutting of tungsten carbide
Authors: Nath, C.
Rahman, M. 
Neo, K.S. 
Keywords: Conventional turning
Cutting parameters
Cutting performance
PCD tools
Sintered WC
Ultrasonic elliptical vibration cutting
Issue Date: 1-May-2009
Citation: Nath, C., Rahman, M., Neo, K.S. (2009-05-01). A study on ultrasonic elliptical vibration cutting of tungsten carbide. Journal of Materials Processing Technology 209 (9) : 4459-4464. ScholarBank@NUS Repository.
Abstract: Sintered tungsten carbide (WC) is a versatile metal matrix composite (MMC) material widely used in the tool manufacturing industries. Machining of this material with conventional cutting (CC) method is a real challenge compared to other difficult-to-cut materials. Ultrasonic elliptical vibration cutting (UEVC) method is a novel and non-conventional cutting technique which has been successfully applied to machine such intractable materials for the last decade. However, few studies have been conducted on cutting of WC using single point diamond tool (SPDT) applying the UEVC technique. This paper presents an experimental study on UEVC of sintered WC (∼15% Co) using polycrystalline diamond (PCD) tools. Firstly, experiments have been carried out to investigate the effect of cutting parameters in the UEVC method in terms of cutting force, flank wear, surface finish while cutting sintered WC. The tests have revealed that the PCD tools in cutting of WC by the UEVC method results in better cutting performance at 4 μm depth of cut (DOC) as compared to both a lower DOC (e.g. 2 μm) and a higher DOC (e.g. 6 or 8 μm). Moreover, the cutting performance improves with the decrease in both the feed rate and cutting speed in the UEVC method like conventional turning (CT) method. A minimum surface roughness, Ra of 0.036 μm has been achieved on an area of about 1257 mm2 with the UEVC performance. The CT method has also been employed to compare its cutting performance against the UEVC method. It has been observed that the UEVC method results in better cutting performances in all aspects compared to the CT method. Theoretical analysis on the UEVC method and analysis of the experimental results have been carried out to explain the reasons of better surface finish at 4 μm DOC and better cutting performance of the UEVC method. © 2008 Elsevier B.V. All rights reserved.
Source Title: Journal of Materials Processing Technology
ISSN: 09240136
DOI: 10.1016/j.jmatprotec.2008.10.047
Appears in Collections:Staff Publications

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