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References
Laser Drilling
With the help of laser drilling, high-hardness materials can easily be machined. One of the greatest advantages of the technology is that the depth of the hole can be adjusted with an accuracy of 1 micron during machining. The short-pulsed, energy-dense laser beam first heats the material to its melting point. With further irradiation, the laser beam evaporates and the vapor pressure, which is created during the process, removes the melt from the borehole. With this technology, a bore hole up to 20: 1 deep and wide can be created. Due to the fast, high-energy pulses, the formation of a heat-affected zone around the hole can be minimized or in some cases even avoided completely.
The technology is particularly suitable for materials that – due to their high-hardness, for example – cannot be processed using traditional methods.