Laser Hole Drilling Parameters

The aspects considered are the hole circularity at exit and the hole taper of the drilled hole.

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. 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. Workshop of photonics continues the development of sapphire drilling techniques to meet our customers needs. 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.

Internal form and taper and related geometrical features and the extent of heat affected materials. Laser hole drilling in thick kapton. 39 have combined laser pre drilling and single lip deep hole drilling process for hole producing in non planar. Hole quality can be judged by.

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. This is done by a uv laser with special beam delivery optics. 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. With an adaption of the laser parameters it is possible to produce bore holes.

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. Laser micro drilling describes the use of a laser to drill precise orifices in various materials. Ghoreishi et al 9 analyzed optimization of effective fac tors in geometrical specifications of laser percussion. 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 diameter of these holes can be as small as 0 002 50 μm. The effect of different process parameters in the optimization of the process is investigated. 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.

Such parameters as high accuracy drilling processing speed flexible hole shaping make laser micromachining technology the best choice for fuel injector nozzles production.