New generation of sintering furnaces from Ruhstrat and Eisenmann

News
September 2, 2014

September 2, 2014

Founded in 1888, Ruhstrat GmbH has a long tradition in high temperature furnaces. At the end of the 19th century, co-operation with Noble prize winner Prof Walter Nernst from the University of Göttingen resulted in the construction of the first resistance heated high-temperature furnace suitable for temperatures up to 3000°C. Since then, Ruhstrat  has focused on customised solutions for advanced heat treatment of powdered materials and graphites. In the 1990s specialist MIM equipment for debinding and high temperature sintering was introduced, including a continuous sintering furnace operating at around 1500°C.

eisenmann-furnace

A roller-type furnace from Eisenmann

In addition to serving the PM industry, Ruhstrat has been building continuous furnaces for the carbon fibre producing industry, where temperatures up to 3000°C are commonplace. It is this capability which led to a close co-operation between Eisenmann and Ruhstrat. In 2011, following a number of years of cooperation, Eisenmann AG acquired Ruhstrat.

Eisenmann entered the PM industry at the end of the 1990s, when it introduced its first high temperature roller hearth sintering furnace. The Eisenmann system consists of individual furnace modules, each with its own roller drive unit, connected through double gate door systems. This allows the user to set a unique temperature profile and atmosphere, adapted to the specific needs of each processing step in the sinter process (delubing, sintering, hardening, annealing etc). With sintering temperatures up to 1350°C and atmosphere separation, both traditional as well as advanced materials could be produced with a very high accuracy.

With the brand new office and manufacturing facilities in Bovenden, between Kassel and Hannover, just finished and the integration of Ruhstrat in the Eisenmann group now completed, it has been decided that PM activities of both companies will be joined and centralised in Bovenden, in order to exchange know-how and experience.

The first results of this co-operation have already been demonstrated in the joint development of a second generation roller hearth sintering furnaces. Combining Eisenmann’s extensive know-how in roller furnaces and Ruhstrat’s long time experience with protective atmosphere, the next generation sintering furnaces has been commissioned. These new furnaces feature an efficient delubing system with an optional direct gas fired section, combined with improved energy efficiency and lowered gas consumption.

The group has furnace manufacturing capabilities in Germany, US, Mexico and China.

www.ruhstrat.com

www.eisenmann.com   


Powder Metallurgy Review magazine:

Your email address:


Useful links: Download PM Review magazine | News headlines | Browse articles 


News
September 2, 2014

In the latest issue of PM Review…

Download PDF

Extensive Powder Metallurgy industry news coverage, and the following exclusive deep-dive articles and reports:

  • Powder Metallurgy: Discover innovative technologies meeting the demands of vehicle electrification
  • Gevorkyan a.s.: Europe’s fast-growing Powder Metallurgy company achieving success through a diversified customer base
  • Powder Metallurgy in Asia: A status update from the World PM2024 Congress, Yokohama

The latest news from the world of metal powders, delivered to your inbox

Don't miss any new issue of PM Review, and get the latest industry news. Sign up to our weekly newsletter.

Sign up

Join our community

Discover our magazine archive…

The free-to-access PM Review magazine archive offers unparalleled insight into the world of Powder Metallurgy from a commercial and technological perspective through:

  • Reports on visits to leading PM part manufacturers, metal powder 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 PM production equipment, metal powders, R&D support and more?

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

  • Powders & materials
  • Powder process, classification & analysis
  • PM products
  • Atomisers & powder production technology
  • Compaction presses, tooling & ancillaries
  • Sintering equipment & ancillaries
  • Post-processing
  • Consulting & toll sintering
View online
Share via
Copy link