The paper contains an experimental study of microcutting intended to help the optimization of the grinding process of the oxide ceramic CM332 (99.5% Al2O3) grinding. The need for investigating the mechanisms occurring between the abrasive material and the ceramic is imposed by the fact that grinding is the dominant technology used to achieve the required quality of the workpiece surface finish. The microcutting process was performed with a single diamond cone-shaped grain of tip radius of 0.2 mm at varying depths of cut. The investigations were carried out to determine the normal and tangential cutting forces, the critical penetration depth and the specific grinding energy as a function of the grain penetration speed and depth. The critical grain penetration depth separating ductile flow from brittle fracture falls within the 4–6 μm range. The values of the critical penetration depth are also consistent with the results of changes in the cutting forces and the specific grinding energy. The chip formation mechanism is associated with the presence of median/radial and lateral cracks, ductile flow, chipping along the groove, and crushing beneath the diamond grain, all this affecting the quality of the ceramic's machined surface.
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June 2015
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Experimental Investigation of Microcutting Mechanisms in Oxide Ceramic CM332 Grinding
G. Mladenovic,
G. Mladenovic
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: gmladenovic@mas.bg.ac.rs
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: gmladenovic@mas.bg.ac.rs
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P. Bojanic,
P. Bojanic
Professor
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: pbojanic@mas.bg.ac.rs
Production Engineering Department,
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: pbojanic@mas.bg.ac.rs
Search for other works by this author on:
Lj. Tanovic,
Lj. Tanovic
Professor
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: ltanovic@mas.bg.ac.rs
Production Engineering Department,
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: ltanovic@mas.bg.ac.rs
Search for other works by this author on:
S. Klimenko
S. Klimenko
Professor
Academy of Sciences of Ukraine,
Avtozavodskaya 2,
Kiev 04074, Ukraine
e-mail: atmu@meta.ua
V. Bakul Institute for Superhard Materials of the National
Academy of Sciences of Ukraine,
Avtozavodskaya 2,
Kiev 04074, Ukraine
e-mail: atmu@meta.ua
Search for other works by this author on:
G. Mladenovic
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: gmladenovic@mas.bg.ac.rs
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: gmladenovic@mas.bg.ac.rs
P. Bojanic
Professor
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: pbojanic@mas.bg.ac.rs
Production Engineering Department,
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: pbojanic@mas.bg.ac.rs
Lj. Tanovic
Professor
Production Engineering Department,
Faculty of Mechanical Engineering,
Kraljice Marije 16,
e-mail: ltanovic@mas.bg.ac.rs
Production Engineering Department,
Faculty of Mechanical Engineering,
University of Belgrade
,Kraljice Marije 16,
Belgrade 11120
, Serbia
e-mail: ltanovic@mas.bg.ac.rs
S. Klimenko
Professor
Academy of Sciences of Ukraine,
Avtozavodskaya 2,
Kiev 04074, Ukraine
e-mail: atmu@meta.ua
V. Bakul Institute for Superhard Materials of the National
Academy of Sciences of Ukraine,
Avtozavodskaya 2,
Kiev 04074, Ukraine
e-mail: atmu@meta.ua
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received December 28, 2011; final manuscript received January 5, 2015; published online February 24, 2015. Editor: Y. Lawrence Yao.
J. Manuf. Sci. Eng. Jun 2015, 137(3): 034502 (5 pages)
Published Online: June 1, 2015
Article history
Received:
December 28, 2011
Revision Received:
January 5, 2015
Online:
February 24, 2015
Citation
Mladenovic, G., Bojanic, P., Tanovic, L., and Klimenko, S. (June 1, 2015). "Experimental Investigation of Microcutting Mechanisms in Oxide Ceramic CM332 Grinding." ASME. J. Manuf. Sci. Eng. June 2015; 137(3): 034502. https://doi.org/10.1115/1.4029564
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