Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fraunhofer IFAM develops continuous 3D printing for mass production

25.02.2015

Three-dimensional printing of polymer, metal or ceramic components is an additive manufacturing technology and enables the manufacture of individual and complex products for a variety of applications. Up to now, this manufacturing process has been a batch process and has required costly maintenance.

Sponsored by the Volkswagen Foundation, scientists at the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM have developed a new production line which facilitates a continuous and automated operation for liquid synthetic materials. The first components for the consumer sector have already been manufactured.


Continuous manufacture using the layer-by-layer principle for synthetic materials

(© Fraunhofer IFAM/Thorsten Müller)

Powder-based continuous procedures already exist. However, the manufacturing principle cannot be transferred to liquid materials as they are used in the stereolithography process. During conventional stereolithography, selected areas of each layer are cured by radiation of UV light.

This process is repeated layer by layer until the corresponding number of layers for the construction of the components has been completed. The elements are subsequently removed from the installation space, which is then set up again. This is a complex procedure which currently stands as an obstacle to mass production and also demands highly qualified staff.

Continuous manufacture using the layer-by-layer principle

The newly developed process uses the technology of continuous photopolymerisation based on the digital light processing system for the layer-by-layer manufacture of components. The significant difference compared with the usual production systems for additive manufacturing is that this new approach uses a rotating cylinder as the substrate and the flat platform is simply omitted.

The lower part of this cylinder is submerged in a liquid polymer in the process and is illuminated by multiple light sources at an exactly defined and increasing range. This is necessary in order that the polymer can selectively be cured on the surface of the cylinder in different areas at various stages.

As the cylinder gradually rotates, a three-dimensional component is built-up layer by layer on the submerged part of the cylinder. The manufactured components on the top of the cylinder can automatically be detached from the surface. The substrate surface is then ready again and the process can fully proceed.

Continuous manufacture is a great advantage particularly in view of the use of resources, as complete components constantly leave the production line and therefore operations are stabilised and thus improved. Up to now, the production cycle times of the traditional additive manufacturing procedures have been incomparable with conventional production lines of mass production.

The approach of the Fraunhofer IFAM researchers is directed towards cost-effective individual mass production and will significantly improve the economic efficiency of the additive manufacturing technique.

Funding Bodies
Sponsored by the Volkswagen Foundation, file number: 87473

Contact
Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
Juan Isaza M.Eng.
Telephone +49 421 2246-180
juan.isaza.paz@ifam.fraunhofer.de

Weitere Informationen:

http://www.ifam.fraunhofer.de

Martina Ohle | Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM

More articles from Process Engineering:

nachricht New manufacturing process for SiC power devices opens market to more competition
14.09.2017 | North Carolina State University

nachricht Quick, Precise, but not Cold
17.05.2017 | Fraunhofer-Institut für Lasertechnik ILT

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

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

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...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

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

Antarctic landscape insights keep ice loss forecasts on the radar

20.11.2017 | Earth Sciences

Filling the gap: High-latitude volcanic eruptions also have global impact

20.11.2017 | Earth Sciences

Water world

20.11.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>