The objective of this paper is to analyze the effect of different carbide grain sizes on the tool material volume worn away from straight tungsten–carbide–cobalt (WC–Co) turning inserts. A previously developed metrology method for assessing the tool material volume worn away from milling inserts is adapted for quantifying the volumetric tool wear (VTW) of turning inserts. Controlled turning experiments are conducted at suitable points in the feed-speed design space for two sets of uncoated inserts having different carbide grain sizes. Three levels of Ti–6Al–4V stock removal volumes (10-cm3 each) are analyzed. For each insert, the tool material volume worn away (in mm3) as well as the three-dimensional (3D) wear profile evolution is quantified after each run. Further, the specific volumetric wear rate and the M-ratio (volume of stock removed to VTW) are related to the material removal rate (MRR). The effect of carbide grain size on VTW is examined using scanning electron microscopy and elemental analysis. Finally, the inverse dependence of the M-ratio on MRR enables the definition of actual usable tool life in terms of its efficiency in removing stock, rather than being based on a tool geometry related metric.
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February 2015
Research-Article
The Correlation of the Volumetric Wear Rate of Turning Tool Inserts With Carbide Grain Sizes
M. Laine Mears,
M. Laine Mears
Clemson University—International Center for Automotive Research
,Greenville, SC 29607
email: mears@clemson.edu
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Thomas R. Kurfess
Thomas R. Kurfess
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Mathew A. Kuttolamadom
M. Laine Mears
Clemson University—International Center for Automotive Research
,Greenville, SC 29607
email: mears@clemson.edu
Thomas R. Kurfess
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received March 12, 2014; final manuscript received July 24, 2014; published online November 26, 2014. Assoc. Editor: Z. J. Pei.
J. Manuf. Sci. Eng. Feb 2015, 137(1): 011015 (8 pages)
Published Online: February 1, 2015
Article history
Received:
March 12, 2014
Revision Received:
July 24, 2014
Online:
November 26, 2014
Citation
Kuttolamadom, M. A., Laine Mears, M., and Kurfess, T. R. (February 1, 2015). "The Correlation of the Volumetric Wear Rate of Turning Tool Inserts With Carbide Grain Sizes." ASME. J. Manuf. Sci. Eng. February 2015; 137(1): 011015. https://doi.org/10.1115/1.4028129
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