Laser drilled holes for fuel filtersCopyright: Bosch
For fuel filtering in automobile applications, laser-drilled filters are employed. Because of the high amount of holes per filter, on-the-fly single pulse drilling is especially suitable for the process. Due to the continuous movement of the workpiece, several hundred holes per minute are being drilled. Typical workpiece thickness ranges are 0.3 to 1 mm. The demand for the hole geometry is comparably low, as the sole requirement is that the diameter is smaller than the size of the to be filtered particles.
Cooling holes for turbine bladesCopyright: MTU
Turbine blades are manufactured with an average amount of 100,000 cooling holes per engine with a diameter range of 0.3 to 1 mm and workpiece thicknesses of 1 to 3 mm. With tilted drilling aspect ratios (thickness / diameter) > 10 are easily attainable. The annual demand for cooling holes for aircraft engines alone adds up to an amount of about 800 million.
Drilling for tooling and plant constructionCopyright: AeroLas
Air bearings are used for high-precision applications in semiconductor- and measuring technology and for textile industry. During the production of aerostatic bearings, each single bearing receives 100 to 1000 jets with diameters of 0.025 to 1 mm by means of laser drilling. The typical thickness of the workpiece to be drilled is 0.8 mm for different materials, e.g. aluminum, stainless steel, brass, or plastics.
This manufacturing method for air bearings is patented for AeroLas GmbH.