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1 Acta Mechanica et Automatica

1 2007

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Razušenie materialov pri dinamičeskom kontaknom nagruženii

Bogdanovič P., Tkačuk D., Bliznec D.

Acta Mechanica et Automatica

2007

Vol. 1, no. 1

15-18

The paper reports data on the kinetics, failure mechanism, and wear rate of silicate glass and sapphire in high-speed abrasive machining. Regularities of the effect of the load the velocity of abrasive particle movement, and the duration of the cutting of sapphire and the diamond monocrystal on temperature fields in the cutting zone and adjacent areas are discussed. I is shown that at high velocities me maximal surface temperature position shifts outside the contact site and temperature stresses cause the thermal cracking of sapphire and glass in this zone. When cutting a diamond monocrystal the temperature in the cutting zone can reach values sufficient for its local graphitization to occur.