A method is proposed for determining the optimum cutting conditions in dry turning of carbon and stainless steels using multilayer coated tools for physical criteria such as the maximum temperature of a cutting tool or maximum heat flux. The modified thermal number describing the tool-chip behavior, is introduced. The correlation between the thermal number and the average tool-chip interface temperature and frictional heat flux is examined for both flat-faced and grooved rake configurations. Although not shown here directly, the thermal barrier effect observed for multilayer coatings with an intermediate layer increases the heat partition to the chip at substantially reduced cutting temperatures. The experimental results indicate that thermal and tribological outputs from the interface are sensitive to changes in the thermophysical properties of the workpiece and coating materials, in particular the thermal conductivity, thermal diffusivity and the heat transmission coefficient. It was proven that the described approach makes it possible to select the appropriate cutting conditions based on process constraints such as the heat transfer intensity and temperature on the tool face.
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November 2003
Technical Papers
Thermophysical-Property-Based Selection of Tool Protective Coatings for Dry Machining of Steels
Wit Grzesik
,
Wit Grzesik
Department of Manufacturing Engineering & Production Automation, Technical University of Opole, Opole, Poland
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Piotr Nieslony
Piotr Nieslony
Department of Manufacturing Engineering & Production Automation, Technical University of Opole, Opole, Poland
Search for other works by this author on:
Wit Grzesik
Department of Manufacturing Engineering & Production Automation, Technical University of Opole, Opole, Poland
Piotr Nieslony
Department of Manufacturing Engineering & Production Automation, Technical University of Opole, Opole, Poland
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received June 2003. Associate Editor: M. Davies.
J. Manuf. Sci. Eng. Nov 2003, 125(4): 689-695 (7 pages)
Published Online: November 11, 2003
Article history
Received:
June 1, 2003
Online:
November 11, 2003
Citation
Grzesik , W., and Nieslony , P. (November 11, 2003). "Thermophysical-Property-Based Selection of Tool Protective Coatings for Dry Machining of Steels ." ASME. J. Manuf. Sci. Eng. November 2003; 125(4): 689–695. https://doi.org/10.1115/1.1617982
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