Mr. Jin Shi Profile

Jin Shi

at Beihang Univ

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Proceedings Article | 13 January 2005 Paper

Study of laser precise drilling technology of ceramic material

Helai Yang, Jin Shi

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.569784

KEYWORDS: Laser drilling, Pulsed laser operation, Ceramics, Laser energy, Laser applications, Resistance, Laser processing, Laser cutting, Corrosion, High power lasers

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Ceramic material has favorable characteristics of high strength, bearing high temperature, bearing abrasion, bearing corrosion, which has been extensively utilized in such areas as machinery, electronics, chemical engineering and aeronautics, etc. Due to the very high degree of hardness and brittleness of ceramic material, processing ceramics is very difficult, especially the drilling particularly difficult. Since laser-processing technology has been introduced, it was firstly applied in the drilling technology because of the laser’s high power density and excellent directional property. However, as laser drilling is based on the optical characteristic of the laser and the laser beam is focused on work piece through the lens, the processed through-holes have been realized with some certain degree of the taper angle. In this paper, a new method for resolving the problem presented above is discussed. The new method -- lean-revolve method is designed for the laser precise drilling of ceramic material, in which the work piece or the laser beam is inclined with some certain degree and the work piece is revolved with a fixed axes during the process of drilling, so as to lessen the taper angle of the holes processed and resolve the problem of drilling technology of ceramic material.

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