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Association of Engineers and Architects Israel (AEAI)

Israeli Forum of Laser Materials Processing-IFLMP

Announcement

The Israeli Forum of Laser Materials Processing at the Architects and Engineers Association Israel (AEAI ) is kindly inviting you to participate in a webinar of two lectures on laser welding:

The scope of the first talk is “Blue diode lasers – Understanding and influencing melt pool dynamics in copper & real application examples”. This lecture will be presented by Mathias Schlett, from Laserline Company, Germany. The lecture will present the main results of investigation of a melt pool dynamics of copper welding with blue lasers.

The second talk is “Innovative laser technology for gastight welding of aluminum alloys in e-Mobility “.The speaker of this presentation is Oliver Quirin, from TRUMPF Company, who will give an insight in the technical benefits and lessons learned for a laser welded heat exchanger. An outlook will be given into the future development steps of TRUMPF on how to transfer this knowledge to a large-scale automotive heat exchanger.

Target audience will include engineers, technical managers / directors and influencers from advanced manufacturing companies and academia. Students and apprentices are also likely to benefit, as well as business and procurement managers who may be making decisions on adopting advanced manufacturing processes or building new / better products.

This webinar is endorsed by the European Materials Research Society (EMRS)

The webinar is scheduled on September 6th, 2023 at 10:00-12:00 ,Jerusalem time.

Jerusalem time – 10:00

:Webinar Program

10:00-10:40 – Speaker: Mathias Schlett, Key Account Manager / Technical Sales, Laserline GmbH

Talk topic: Blue diode lasers – Understanding and influencing melt pool dynamics in copper & real application examples

Abstract:  Within the last years an increasing demand of copper components was observed, especially in the fields of energy transition, e-mobility, and digitalization. For joining those components, laser welding has become more and more popular. But commonly used infrared lasers are characterized by a low absorptivity in solid copper at room temperature. In contrast, lasers in the blue wavelength spectrum are characterized by a significantly higher absorptivity. This facilitates the initial energy input into the material and makes the welding process more efficient. Further, in the liquid state, the absorptivity change in copper is much smaller for the blue wavelength. This results in a continuous heating of the material, a more stable melt pool and a lower amount of spatter. Laserline launched a 4 kW blue diode laser in 2023, the currently highest available CW power of lasers in the visible wavelength range. It makes accessible a broad variety of applications. But the scientific investigations for the blue wavelength at a power of several kilowatt are still limited. The lecture is investigating melt pool dynamics of copper welding with blue lasers. One the one hand, synchrotron trials were performed allowing a look into the material during welding. On the other hand, conventional welding trials were performed analyzing the impact of beam shaping on the melt pool dynamics.

10:40- 11:20 –  Speaker : Dipl.-Ing. Oliver Quirin. MBE. TRUMPF Laser- und Systemtechnik GmbH

Talk topic: Innovative laser technology for gastight welding of aluminum alloys in e-Mobility.

 Abstract: An active thermal management of battery systems is crucial for cell lifetime, customers charging experience and becomes industry standard.

Due to the high dynamic in design, variants and material concepts of the battery heat exchangers flexible laser welding technologies is necessary to meet the OEM requirements.

TRUMPF Laser- und Systemtechnik started a development about the technical possibilities of aluminum laser welding and could proof leak-tight heat exchanger plate that meet different OEM requirements.

This was enabled by new laser welding technologies such as the Multifocus and the Brightline technology as well as new process approaches and strategies. During the first development phase TRUMPF gained a lot of knowledge and lessons learned.

Beyond the advantage of flexibility, laser welding is energy efficient compared to traditional manufacturing technologies and allows the new upcoming structural designs of heat exchanger plates.

Aluminum is suitable for heat exchangers not only because of its good conductivity, but also because it offers considerable potential for lightweight construction compared with steel, especially for flat large components. This reduces overall passenger vehicle weight and allows increased loading capacity for commercial vehicles.

Furthermore, laser welding enables everything from small lot sizes with flexible tooling to a quick ramp up of high production volumes with small production footprints for the dynamic demands of the battery market.

The presentation will give an insight in the technical benefits and lessons learned for a laser welded heat exchanger. Finally, an outlook will be given into the future development steps of TRUMPF on how to transfer this knowledge to a large-scale automotive heat exchanger.

11:20-11:50 –  Q&A

About the speakers:

Mathias Schlett, Key Account Manager / Technical Sales,   ,Laserline GmbH, Fraunhofer Straße 5, 56218 Mülheim-Kärlich, Germany

Mathias Schlett studied Chemical Technology at the University of Applied Sciences in Darmstadt, Germany. In 2011 he joined the high power laser industry for material processing and since then he had different sales-related positions in this environment. In June 2021 he joined laser line as Key Account Manager specialized in blue laser applications and e-mobility laser processes.

Dipl.-Ing. Oliver Quirin. MBE. TRUMPF Laser- und Systemtechnik GmbH

Oliver Quirin has almost 20 years of experience in the automotive industry and 16 years in laser and joining technology in car body construction. During this time, he was responsible for various tasks in the entire body construction process chain, from laser-assisted repair of forming tools, to technology research and series release of laser and joining techniques, to series production and several new types of laser processes in the global production network of an automobile manufacturer. Most recently, he became Industry Manager Mobility Battery Pack at TRUMPF Laser- und Systemtechnik GmbH and is responsible for the development of laser-welded battery cooling plates in his industry.

Mechanical engineers, manufacturing engineers, welding engineers

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