Metal cutting operations play an especially important role in modern industrial production processes. Based on the tremendous development of multi-axis machine tools, cutting operations represent an ever increasing part of manufacturing process steps.
PVD-coatings for high performance cutting Tools
Instead of preparing specific tools and forms for different work pieces, these are produced in universal machining centers using CAD/CAM control and, in the course of time, a huge amount of cutting inserts.
To realize ever faster production and, at the same time, to guarantee an excellent quality level of the treated workpiece, the development of high performance cutting tools with tailored, wear-resistant coatings has become a key factor for the tool industry.
Multilayered PVD coatings ensure superior wear resistance even under severe cutting conditions. Tailored compositions and architecture of the coatings help to adapt them to tool materials and to the tool geometry used in specific cutting operations, as well as to the work materials to be treated. High power pulse magnetron sputtering (PMS) offers complete flexibility in developing such coatings, be it with respect to the coating material or to the coating architecture. This holds for both high speed and high precision cutting tools.
The pulsed magnetron sputtering process allows deposition of extremely dense and smooth layers free of droplets. By co-sputtering of different materials in a reactive gas atmosphere, a variety of layer compositions, including periodic and aperiodic sequences and graded transitions between individual layers can be synthesized. Single-phase nanocrystalline oxides especially show high thermal stability and chemical inertness. Utilizing advanced pulsed power supplies and a fast feedback control, ternary oxide coatings can also be deposited in long-term, stable deposition processes, resulting in pure single phase coatings. Intrinsic and thermally induced compressive stresses are moderate, and they enhance the wear resistance.
A highly effective plasma pretreatment guarantees excellent adhesion of the coatings. The flange-mounted plasma source LAVOPLAS has been developed to create a dense plasma in a volume corresponding to a typical industrial size batch coating device. It can be used for substrate etching as well as for plasma-activated deposition processes when a high flux of ions is required. The energy of the charged particles can be influenced by a substrate bias voltage to maximize the effect of the preferred ionization or excitation processes. In combination with high power pulsed sputtering, a unique technology sequence for the coating of tools with high-end layer-stacks is available.
Wear-resistant layers are just one example demonstrating the capabilities of plasma and electron beam processes developed at Fraunhofer FEP. You can find more details and a variety of other application examples on our website www.fep.fraunhofer.de, or visit us at the EMO fair in Hannover, at stand no. 54, hall 13, from September 16 – 20, 2013. Together with other Fraunhofer partners we will demonstrate the benefits of advanced plasma techniques for the coating of tools and parts. We are looking forward to welcoming you and discussing your requirements.Press contact:
Winterbergstraße 28 | 01277 Dresden | Gemany | www.fep.fraunhofer.de
Annett Arnold | Fraunhofer-Institut
Let the good tubes roll
19.01.2018 | DOE/Pacific Northwest National Laboratory
Method uses DNA, nanoparticles and lithography to make optically active structures
19.01.2018 | Northwestern University
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
19.01.2018 | Materials Sciences
19.01.2018 | Health and Medicine
19.01.2018 | Physics and Astronomy