Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

SLM: New machine design and exposure concept facilitates scalable productivity and building space

13.11.2014

A this year’s EuroMold, which takes place in Frankfurt from November 25-28, 2014, the Fraunhofer Institute for Laser Technology ILT will for the first time present its new SLM machine design and exposure concept. This solution makes it easy to scale productivity and building space at significantly lower cost than previous machine designs allowed.

Additive manufacturing via selective laser melting (SLM) has been successfully used to make prototypes and small-series production runs of predominantly compact components for a number of years now.


Laboratory system: Processing head for scalable SLM machine designs.

Fraunhofer ILT, Aachen,

But users want the ability to increase productivity via higher build-up rates, and would like more flexibility in terms of available building space. Beyond this, it remains vitally important for series production on an industrial scale to have robust process engineering with reproducible component quality and the ability to monitor processes.

Experts are currently pursuing several approaches to increasing productivity and building space. Until now, productivity has mainly been boosted by using higher laser power in combination with optics systems that allow operators to adjust the beam diameter. Larger building spaces are currently achieved through the use of a movable single optical system or multiple parallel beam sources and scanner systems.

Systematic advantages of the new design

Scientists at Fraunhofer ILT used funding provided by the Cluster of Excellence »Integrative Production Technology for High-Wage Countries« to develop, design and build a new machine concept at their site in Aachen. Their design dispenses with scanner systems altogether and instead relies on a printer head featuring several individually controllable diode lasers that is moved using linear axes.

The advantage of multi-spot processing is that it means the system’s build-up rate can be increased significantly by adding a virtually unlimited number of beam sources – with no need for modifications to the system design, exposure control software or process parameters. The new plant design also makes it possible to increase building space simply by extending the travel lengths of the axis system and without changing the optical system.

In addition, the processing head has a local shielding gas flow system that guarantees a constant stream of shielding gas at each processing point, regardless of the size of the installation space. This is essential for achieving position-independent, reproducible component quality. The new design also allows process monitoring systems to be incorporated into the production system. These monitoring systems can also be set up in much simpler form than current coaxial systems allow.

Fraunhofer ILT at EuroMold 2014

Experts from Fraunhofer ILT will use a laboratory demonstrator to present their new SLM machine concept at the joint Fraunhofer booth C66 in Hall 11.

Contact

M.Sc. Florian Eibl
Rapid Manufacturing Group
Telephone +49 241 8906-193
florian.eibl@ilt.fraunhofer.de

Dr. Wilhelm Meiners
Head of Rapid Manufacturing Group
Telephone +49 241 8906-301
wilhelm.meiners@ilt.fraunhofer.de

Fraunhofer Institute for Laser Technology ILT
Steinbachstraße 15
52074 Aachen, Germany


Weitere Informationen:

http://www.ilt.fraunhofer.de

Petra Nolis | Fraunhofer-Institut

More articles from Trade Fair News:

nachricht Innovative Infrared Emitters Optimize the Manufacture of Vehicle Interior Fittings Using Vacuum Lamination
01.08.2017 | Heraeus Noblelight GmbH

nachricht Bug-proof communication with entangled photons
22.06.2017 | Fraunhofer-Gesellschaft

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

Gold shines through properties of nano biosensors

17.08.2017 | Physics and Astronomy

Greenland ice flow likely to speed up: New data assert glaciers move over sediment, which gets more slippery as it gets wetter

17.08.2017 | Earth Sciences

Mars 2020 mission to use smart methods to seek signs of past life

17.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>