Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Small parts make the difference

12.01.2016

Call for partners: high coating-rate vacuum deposition for small parts in big volumes

Bulk goods? – yes, numerous small parts in industrial manufacturing are produced and processed in such large quantities that we speak of them as bulk goods. Metallic fasteners like screws, bolts, and rivets fall into this category.


PVD-coated bolts and nuts

Fraunhofer FEP


Electrical resistance after aging in heat treatment facility at 80°C

Fraunhofer FEP

Their use frequently remains unseen, and yet they play an enormous role in the manufacturing of industrial goods. The quality of a product can be measured by the quality of the fasteners used as well. Coatings for these kinds of fasteners improve their wear characteristics during processing as well as their operating life when they join parts together to form a whole.

The Component Coating Working Group of Fraunhofer FEP has long been dedicated to developing coating processes for these small parts based on physical vapor deposition (PVD). This development work has focused on fasteners for the car industry that are coated to inhibit corrosion.

We have reached a point today when it is possible to produce 10 µm aluminum-based anti-corrosion coatings on small batches of fasteners in a roughly one-hour coating procedure. The technology has awakened the interest of industrial coating service firms that are involved with scaling up to actual industrial requirements.

It has also been nominated for the 2015 Steel Innovation Award of the German Steel Association (Wirtschaftsvereinigung Stahl). The spectrum of research topics in this competition reflects the importance of light-weight construction techniques in industrial manufacturing and has reinforced the conviction of the developers that their process will become a component in producing new competitive products that allow dissimilar materials to be joined together using corrosion-resistant fasteners.

In the transportation sector, especially in automotive manufacturing, the efforts to save weight and conserve natural resources have been unabated. This continuous evolution of components together with the use of new construction materials places new demands on fasteners and their surfaces.

Besides corrosion protection, additional functionality is being demanded of coatings, especially for composite and dissimilar materials. For example, equalization of electrical voltages between various component groups is taking place via microcurrents across multiple component interfaces.

This equalization benefits from minimum electrical contact resistances. PVD layers have proven themselves superior to other anti-corrosion coatings in this application. The PVD engineering facility at Fraunhofer FEP offers many options with respect to coating materials and coating buildup through a combination of various vacuum coating processes.

Together with the Work Group for Mechanical Joining under the Chair of Joining Technology and Assembly at TU Dresden, the Fraunhofer team intends to dedicate themselves in the future to further improving the electrical, mechanical, and anti-corrosion properties of coatings.

Coating architectures with intermediate layers of a second metal can be realized for this purpose and their mechanical and electrical properties will be investigated in-situ. The Work Group at TU Dresden can produce joins using coated riveting components and subject the bonded joins to detailed characterization that includes electrical testing.

Both these research groups are now seeking industrial partners in order to merge both scientific and practical experience in applications-oriented projects and work in a goal-oriented manner on these complex problems jointly.

Contact FEP:

Dr. Fred Fietzke
fred.fietzke@fep.fraunhofer.de
Tel.: 0351 / 2586-366

Dr. Heidrun Klostermann
heidrun.klostermann@fep.fraunhofer.de
Tel.: 0351 / 2586-367

Contact TU Dresden:

Dipl.-Ing. Jan Kalich
Technische Universität Dresden
Fakultät Maschinenwesen
Institut für Fertigungstechnik
Professur Fügetechnik und Montage
Tel.: 0351 / 463-37858
jan.kalich@tu-dresden.de

Weitere Informationen:

http://s.fhg.de/ize

Annett Arnold | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

More articles from Process Engineering:

nachricht CeGlaFlex project: wafer-thin, unbreakable and flexible ceramic and glass
25.04.2017 | Fraunhofer-Institut für Lasertechnik ILT

nachricht Additive manufacturing, from macro to nano
11.04.2017 | Laser Zentrum Hannover e.V.

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

NASA's Fermi catches gamma-ray flashes from tropical storms

25.04.2017 | Physics and Astronomy

Researchers invent process to make sustainable rubber, plastics

25.04.2017 | Materials Sciences

Transfecting cells gently – the LZH presents a GNOME prototype at the Labvolution 2017

25.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>