LASYS
beam profiles can reduce heat affected zones, burr volume and allow reduction of pulse-to-pulse overlap for scribing lines e.g. with thin film ablation. Te choice of adequate beam shapers depends on the quality of the laser beam (M²) and the input beam profile. Using diffractive elements with ultrashort pulsed lasers spectral bandwidth should also be considered. Te presentation will show typical optical set-ups for beam shapers and their integration in existing optical setups. Furthermore it will demonstrate the use and adjustment of diffractive beam splitters for parallel processing.
www.topag.de
16.00-16.30
Next generation laser materials processing – a new sensor approach heading for industrial applications
Dr Markus Kogel-Hollacher, Precitec
Wednesday 25 June 9.30-10.00
Laser joining of dissimilar materials
Marco Holzer, Trumpf Laser- und Systemtechnik
Te increased use of lightweight designs due to reduction goals of CO2
-emissions
leads to the usage of new materials like high-strength steel, non-iron metals (e.g. aluminium and magnesium), plastics and fibre-reinforced plastics. In addition to the use of single-material design, material mixes are used leading to new challenges for joining processes. Te presentation focuses mainly on metal-plastic-hybrid-parts as well as on aluminium-steel connections which are a special focus for the automotive industry. Two different strategies will be presented. On the one hand, laser-structured steel surfaces are the basis for connecting steel to plastic. On the other hand, the use of additional powder material can be used for joining steel to aluminum. In the end the presentation will be summarised and concluded with an outlook of ongoing developments.
www.trumpf.com
Precitec has been creating innovative solutions for laser material processing on the global market for more than 40 years. By introducing the In-Process Depth Meter (IDM) the company is raising the benchmark for future systems in a broad range of process monitoring solutions. New laser application fields can be developed and the saving potentials that were recognised long ago can be exploited. In 2013, the IDM was presented to the market. Te product is based on low-coherence interferometry that integrates welding depth measurement into commercially available laser processing machines. Evaluating up to 70,000 measuring points per second, the system is able to determine the depth of the keyhole even in highly-dynamic welding processes. And with a resolution of just a few micrometers, even short term process deviations are precisely detected. Welding depths down to 8mm are currently being field tested.
www.precitec.com
20 LASER SYSTEMS EUROPE ISSUE 23 • SUMMER 2014 10.00-10.30
Freeform beam shaping for micromachining
Dr Alexander Laskin, AdlOptica
Te variety of laser industrial applications dictates a variety of optimum intensity distributions: flat-top, inverse-Gauss, linear laser spots, and refractive field mapping beam shapers. piShaper demonstrates flexibility in operation with modern lasers and provides freeform beam shaping – offering various beam profiles by the same unit. Due to almost lossless transformation, conserving beam consistency, high transmittance, operation with ultra-short pulse or kW CW lasers, collimated output beam, easy combining with other optics it is possible to build an optimum beam shaping system: for macro laser applications – using piShaper; and for micro processing with focused beams – using Focal-piShaper.
www.pishaper.com
10.30-11.00
From high precision metal belt to boreholes for defined gas volumes
Carmina Läntzsch, LaserJob
More than 10 years ago, LaserJob began production of customised stainless steel belts for the automotive industry, medical technology industry, food industry, solar industry and the electronics industry. By providing the highest positional accuracy available to the market for custom perforated stainless steel belts, LaserJob is able to assure consistent quality on high- speed lines which possess extremely short cycle times. LaserJob also specialises in high- precision laser-drilling of miniaturised boreholes. Te company is able to laser-drill stainless steel material with a thickness of 75µm and boreholes with a diameter of 30-40µm for defined gas flow rates. LaserJob is located in Fürstenfeldbruck Germany, 35 minutes west of Munich.
www.laserjob.de
11.00-11.30
New applications and trends for multi-kW diode lasers
Michael Nagel, Laserline
Laserline’s high power diode lasers are available in multi-kW range and set new trends for special materials processing. With a beam quality of 220mm mrad aſter the optical fibre, the diode laser with 20kW is optimally-suited for applications in the field of hardening and tempering of steels in particular, as well as for general heat treatment procedures and new but fast approaching high-speed cladding.
www.laserline.de
11.30-12.00
Processing of transparent materials with ultrashort pulse lasers
Linas Giniunas, Light Conversion
Laser processing of transparent materials using ultra short pulse lasers is widely used not only in scientific laboratories, but also on the mass- production lines. Depending on the specific application the fundamental IR (e.g.1030nm) or
@lasersystemsmag |
www.lasersystemseurope.com
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