Mitsubishi Electric reveals new Dot Forming Technology for metal Additive Manufacturing

October 26, 2018

Mitsubishi Electric reveals new Dot Forming Technology for metal Additive Manufacturing

Mitsubishi Electric will exhibit a metal Additive Manufacturing machine incorporating its DFT technology at the 29th Japan International Machine Tool Fair (Courtesy Mitsubishi Electric)

 

Mitsubishi Electric Corporation, Tokyo, Japan, has reportedly developed a new technology for high-precision metal Additive Manufacturing. Known as ‘Dot Forming Technology’ (DFT), the process combines laser, CNC and computer aided manufacturing (CAM).

According to the company, DFT produces metal components with few voids at high speed, employing a laser wire Directed Energy Deposition (DED) process which fuses materials as they are deposited. The company stated that it believes this new process has the potential to raise productivity in a wide range of applications, including the near net shape manufacture of aircraft and automobile parts, and build-up repairs.

 

Improving shape accuracy with dot forming

Mitsubishi Electric reveals new Dot Forming Technology for metal Additive Manufacturing

A comparison between part deformation in consecutive forming and dot forming technologies (Courtesy Mitsubishi Electric)

 

A key focus of DFT’s development has reportedly been on avoiding the part deformation which can occur during DED. During DED, heat generated by a laser and heat from the just-deposited material are transferred to the deposition base. If the laser is continuously irradiated, the temperature of the deposition base rises, and new molten material added to this base can take more time to solidify, causing the shape of the part to collapse under its own weight.

To prevent this outcome, Mitsubishi Electric stated that its new technology uses a unique pulsed lase and CNC technology with minimised heat input, to help ensure adequate cooling time. Further, the new DFT technology also synchronously controls the supply of wire feedstock and shield gas, and the position and moving speed of the laser irradiation point.

This means high temperatures are limited to a point-like narrow area, making it possible for the antioxidant action of the shield gas to spread across the entire high-heat area, suppressing oxidation. The production of complex parts is further supported by the use of special-purpose CAM, which automatically generates forming paths corresponding to the Dot Forming Technology.

Mitsubishi Electric will exhibit a metal Additive Manufacturing machine incorporating its DFT technology at the 29th Japan International Machine Tool Fair (JIMTOF2018), set to be held at the Tokyo Big Sight exhibition complex from November 1-6, 2018. It expects to launch a commercial version of the system in 2021.

www.mitsubishielectric.com

Download the latest issue of Metal AM magazine

Our latest issue is now available to view online or download in PDF format.

As well as an extensive AM industry news section, this 204-page issue includes articles and reports on:

  • Optimised thermal management in semiconductor fabrication using AI-enabled generative design and Additive Manufacturing
  • Forging a process for mass customisation via metal Additive Manufacturing
  • Bringing it all together: How Materialise is integrating manufacturing and software expertise to shape AM’s future
  • Pedal to the metal at the Digital Manufacturing Centre: Redefining what’s possible for AM in hypercars and beyond
  • The future is Additive Manufacturing – if we take a more holistic view of the design opportunities
  • Building a case for radical collaboration plus quality standards: The pathway to growing the AM industry
  • Distributed manufacturing: Old concept, new relevance, new technology?
  • Design for Additive Manufacturing: A workflow for a metal AM heat exchanger using nTopology (BJT)
  • Taking the holistic view:
    Defining the state-of-the-art in the evolving PBF-LB machine marketplace
  • > More information

Latest news

    E-newsletter

    Sign up to our e-newsletter, sent weekly to AM professionals and end-users around the world. We'll also let you know each time a new issue of Metal AM magazine is available.

    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 in PDF format, in either single page format or as double-page “spreads” for viewing on large monitors. All downloads are free of charge. Go to archive...

    Connect with us

    Visit our social media channels and sign up to our e-newsletter

    Copy link
    Powered by Social Snap