Laser Hole Drilling Parameters

The effect of different process parameters in the optimization of the process is investigated.

Laser hole drilling parameters.

Laser drilling of sapphire using femtosecond laser radiation is a unique processing technique enabling no cracks in hole peripheries accurate taper control and smooth wall finish. 39 have combined laser pre drilling and single lip deep hole drilling process for hole producing in non planar. Laser micro drilling describes the use of a laser to drill precise orifices in various materials. Naeem et al 8 developed laser percussion drill ing of aerospace materials using high peck power fiber de livered 1 amp pumped pulsed nd yag laser.

As a result evaporation of the material proceeds without the interim melting phase and any further corrections such as burrs and bulges elimination are not necessary. The diameter of these holes can be as small as 0 002 50 μm. This is done by a uv laser with special beam delivery optics. The aspects considered are the hole circularity at exit and the hole taper of the drilled hole.

Laser hole drilling in thick kapton. Workshop of photonics continues the development of sapphire drilling techniques to meet our customers needs. If larger holes are required the laser is moved around the circumference of the popped hole until the desired diameter is created. Multiple holes drilled in thick kapton with good result.

Multiple hole drilling through thick kapton with good round shape holes 250 um and 125 um diameters multiple hole drilling through thick kapton with good round shape holes 25 um diameter hole. With an adaption of the laser parameters it is possible to produce bore holes. Hole quality can be judged by. In the present research nd yag laser micro drilling of gamma titanium aluminide a new material which has performed well in laboratory tests as well as in different fields of engineering is studied.

Such parameters as high accuracy drilling processing speed flexible hole shaping make laser micromachining technology the best choice for fuel injector nozzles production. The optimum performance in laser drilling depends very much upon the proper selection of laser parameters as well as the physical properties of the workpiece material. The anv laser team has extensive experience in laser drilling with the know how to precisely control all the parameters that are critical to achieving precise and predictable hole drilling results the quality of the laser beam wavelength intensity pulse duration and pulse repetition rate. Ghoreishi et al 9 analyzed optimization of effective fac tors in geometrical specifications of laser percussion.

In the case of drilling polymer materials especially polymer based medical devices where hole precision accuracy and quality are critical attributes the choice of machining technique is as important as the laser wavelength selection.