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 AchemAsia 2019 will take place in Shanghai
15.06.2018 | DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V.

nachricht Insects supply chitin as a raw material for the textile industry
05.06.2018 | Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB

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: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Creating a new composite fuel for new-generation fast reactors

20.06.2018 | Materials Sciences

Game-changing finding pushes 3D-printing to the molecular limit

20.06.2018 | Materials Sciences

Could this material enable autonomous vehicles to come to market sooner?

20.06.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>