Abstract
The possibility of applying pulse-periodic laser irradiation for cleaving superhard materials for use as tools is studied. Experimental investigations are confirmed by calculations and it is shown that through the use of laser irradiation (wavelength 1.06 μm, pulse length 130 μsec, radiant energy 0.8 J, pulse repetition frequency 25-50 Hz) it is possible to attain cutting depths in superhard materials of up to 2.0 mm with width of 200-300 μm. The speed of laser cutting superhard plates is 3.5 times higher than with the use of the electrospark cutting technology. It is shown that phase transformation of diamond into graphite is either absent (Hexanite-R) or not significant (SKM-R) and do not affect the subsequent technological operations involved in fabrication of the tool.
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