Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Complex hardmetal tools out of the 3D printer

21.09.2016

For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.

Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of tungsten carbide were manufactured by uniaxial or cold isostatic dry pressing, extrusion and injection molding as well as by shape cutting at Fraunhofer IKTS. In traditional tool manufacturing, complex geometries, such as helical or meandering cooling ducts inside the component, are still implemented at high cost or not at all.


Wire die with integrated cooling duct in the raw state after sintering: at Fraunhofer IKTS in Dresden, hardmetal components are developed according to customer requirements via 3D binder jetting.

Design flexibility by additive manufacturing

"Meanwhile, it is known that through resource-saving and tool-free 3D printing even complex, individualized ceramic geometries can be realized quickly", says Dr. Tassilo Moritz, group leader "Shaping" at Fraunhofer IKTS.

Now IKTS scientists also succeeded in producing complex hardmetal tools via 3D printing processes. The binder jetting method is used in this case. The starting powders or granules are locally wetted with an organic binder by a print head and bound. The challenge was to get one hundred percent dense components, which have a perfect carbide microstructure and thus good mechanical properties.

Hardmetals consist of a ceramic hard material, such as tungsten carbide, and a viscous binder matrix of cobalt and nickel or iron.

By selectively varying the binder matrix, flexural strength, toughness and hardness can be adjusted individually – the lower the proportion of binder in the carbide, the harder the component. The prototypes manufactured at Fraunhofer IKTS have a binder content of twelve and seventeen percent by weight and show a structure comparable to conventional routes.

"Through the use of 3D printing for the production of complex green bodies and subsequent sintering under conventional sintering conditions, we achieve components with a typical hardmetal structure at one hundred percent density. Moreover, it is possible to set a homogeneous cobalt distribution achieving a comparable quality to conventionally produced high-performance tools," explains Johannes Pötschke, group leader "Hardmetals and Cermets" at Fraunhofer IKTS.

Fraunhofer IKTS supports manufacturers and users of hardmetal tools in the selection of appropriate materials and in product-specific development of 3D printing processes. For the first time, complex prototypes are presented at WorldPM 2016 from October 9 to 13 in Hamburg, Booth 85.

Weitere Informationen:

http://www.ikts.fraunhofer.de/en/communication/press_media/press_releases/2016_9...

Dipl.-Chem. Katrin Schwarz | Fraunhofer-Institut für Keramische Technologien und Systeme IKTS

Further reports about: 3D 3D printer 3D printing processes Fraunhofer-Institut IKTS carbide sintering

More articles from Trade Fair News:

nachricht SYSTEMS INTEGRATION 2018 in Switzerland focuses on building blocks for industrial digitalization
20.11.2017 | IVAM Fachverband für Mikrotechnik

nachricht Medica 2017: New software enables early diagnosis of arteriosclerosis
06.11.2017 | Technische Universität Kaiserslautern

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: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Lightning, with a chance of antimatter

24.11.2017 | Earth Sciences

A huge hydrogen generator at the Earth's core-mantle boundary

24.11.2017 | Earth Sciences

Scientists find why CP El Niño is harder to predict than EP El Niño

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>