Fraunhofer develops large scale SLM system

November 9, 2017

Fraunhofer develops large scale SLM system

With a laboratory system, Fraunhofer ILT is further developing SLM into a 3D printing technology for large metal components. (machine housing not shown) © Fraunhofer ILT, Aachen, Germany

 

Fraunhofer Institute for Laser Technology (ILT), Aachen, Germany, has announced the development of a new, large scale SLM laboratory system with a usable build volume of 1,000 mm x 800 mm x 500 mm. The new Additive Manufacturing system highlights the institutes work on innovative strategies for exposure and shielding gas flow, allowing the manufacture of large metal components quickly and with high process reliability.

It is stated that established inert gas suction strategies are no longer effective for a very large build volume. Scientists at Fraunhofer ILT are therefore basing their approach on small, movable processing heads with a local shielding system, which ensures a constant stream of inert gas at every processing point for build volumes of any size.

Researches are reported to be testing systems with fiber lasers as well as exposure concepts with cost-effective diode lasers. In addition to research into established scanner systems with mirrors, they are also investigating a moving processing head with highly dynamic linear axes and several individually controllable diode lasers.

The advantage of this multi-spot processing is the ability to significantly and cost-effectively increase the system’s build-up rate by increasing the number of beam sources. The new system concept reportedly makes it possible to increase the build volume solely by extending the travel length of the axis system, without changing the optical system.

The research findings are said to give machine manufacturers a foundation upon which to develop and build the next generation of SLM systems. “We hope that the system concept will lead to a breakthrough in the successful use of this technology in series manufacturing,” stated Christian Tenbrock, scientist in the Rapid Manufacturing group. “We create process conditions that are constant and easy to control, thereby improving process robustness.”

 

Fraunhofer ILT at formnext

Using process videos, the ILT scientists will be demonstrating how the new laboratory system is able to swiftly manufacture large components with high process reliability at the joint Fraunhofer booth F50 in Hall 3.0 at the formnext trade fair from November 14 to 17, 2017 in Frankfurt.

www.ilt.fraunhofer.de

In the latest issue of Metal AM magazine

Download PDF
 

Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • Revolution, not evolution: General Motors on building an AM culture and the AM Dream Machine
  • The power of Additive Manufacturing in the hands of artists: Public works to small batch production
  • Growing momentum and broadening recognition: A status update on the rise of Electron Beam PBF
  • Improving carbon capture efficiency through Additive Manufacturing in the race for a liveable climate
  • The System of AM Systems: How Metal Powder Works’ in-process powder production could change metal AM
  • The next generation: Using metal AM to drive emissions reduction and educate the engineers of the future
  • Advances in the AM of refractory metals and hard materials at the 20th Plansee Seminar
  • Additive Manufacturing needs you: Why you and your company should get involved in standards development

The world of metal AM to your inbox

Don't miss any new issue of Metal AM magazine, and get the latest industry news. Sign up to our twice weekly newsletter.

Sign up

News from the industry…

    News from the industry…

    Discover our magazine archive…

    The free to access Metal Additive Manufacturing magazine archive offers unparalleled insight into the world of metal Additive Manufacturing from a commercial and technological perspective through:

    • Reports on visits to leading metal AM part manufacturers and industry suppliers
    • Articles on technology and application trends
    • Information on materials developments
    • Reviews of key technical presentations from the international conference circuit
    • International industry news

    All past issues are available to download as free PDFs or view in your browser.

    Browse the archive

    Looking for AM machines, metal powders or part manufacturing services?

    Discover suppliers of these and more in our comprehensive advertisers’ index and buyer’s guide, available in the back of Metal AM magazine.

    • AM machines
    • Process monitoring & calibration
    • Heat treatment & sintering
    • HIP systems & services
    • Pre- & post-processing technology
    • Powders, powder production and analysis
    • Part manufacturers
    • Consulting, training & market data
    Download PDF
    Share via
    Copy link
    Powered by Social Snap