Plansee simplifies MIM hot zone door operation

May 14, 2013

The molybdenum hot zone is the heart of every MIM furnace and with proper design, combined with efficient heating elements, such hot zones guarantee a very clean environment and ensure that high temperatures are achieved while shield packs minimise heat loss. Well-designed hot zones, state Austria’s Plansee SE, have a long service life, offer short heating and cooling cycles and distribute heat evenly.

plansee-1

Metal hot zone for MIM furnaces

The company is continuously improving the energy efficiency and performance of its hot zones for high-temperature furnaces, which are manufactured with its creep-resistant molybdenum alloys and lightweight construction methods.

Plansee now reports that it has done extensive work with the design of its MIM hot zone doors, which are opened and closed several times between cycles. With other designs, states the company, two hands are necessary to open the door to the hot zone and prior to opening the door it is necessary to disengage the actuating mechanism for the shutter assembly that enables rapid cooling. Multi-step processes like these can increase the possibility of operator error but are unavoidable with many of the current designs.

plansee-2

Hot zone door with preinstalled shutters

With its new design, Plansee states that it is no longer necessary to disengage and reengage the door fastenings when opening and closing the doors. When the door is closed, the fastening mechanism automatically engages thanks to the counterweighted handle and ensures a tight seal.

The new hot zones also benefit from preinstalled shutters. Typically, the fastening assembly for the cooling shutter mechanism is supplied separately and has to be installed on-site. The shutters and related guide rods are now preinstalled to enable a simpler installation, with the new shutters also further reducing heat loss.

plansee-3

The door of the retort 

Plansee also states that it has a new design for the door of the retort which reduces thermal deformation, the main reason why such doors can be difficult to open. Reinforcing structural angles on both the inside and outside of the retort door have increased resistance to warping. The door is manually affixed to the retort and held in place with a series of hooks located on both sides of the retort. These specially designed counterweighted hooks employ the use of the door’s own weight to provide a tight seal against the retort opening, ensuring atmosphere integrity.

www.plansee.com

News | PDF Store | Magazine Subscriptions | What is PIM? | e-newsletter

In the latest issue of PIM International…

Download PDF

Extensive MIM, CIM industry and sinter-based AM industry news, plus the following exclusive deep-dive articles and reports:

  • Frank Petzoldt on the past, present and future of MIM
  • Saturation in metal Binder Jetting
  • Insights from the 2022 International Conference on Injection Molding of Metals, Ceramics and Carbides
  • Additive Manufacturing at CeramTec
  • The carbon footprint of injection moulding machines
  • Calculating the sintering shrinkage of MIM parts

The latest news from the MIM, CIM and sinter-based AM industries

Don't miss any new issue of PIM International, and stay up to date with the latest industry news. Sign up to our fortnightly newsletter.

Sign up

News from the industry…

    Discover our magazine archive…

    The free-to-access PIM International magazine archive offers unparalleled insight into the world of MIM, CIM and sinter-based AM from a commercial and technological perspective through:

    • Reports on visits to leading 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 suppliers of materials, production equipment and finished MIM, CIM or sinter-based AM parts?

    Discover suppliers of these and more in our advertisers’ index and buyer’s guide, available in the back of PIM International.

    • Metal powders
    • MIM, CIM & AM parts producers
    • Binders & feedstocks
    • Feedstock mixers
    • Furnaces & furnace supplies
    • Atmospheres & gas generation
    • HIP systems & services
    • Injection moulding machines
    • AM technology
    • Debinding systems
    Download PDF
    Share via
    Copy link
    Powered by Social Snap