Please feel free to contact us: Additive Manufacturing · In applying techniques of Additive Manufacturing, it is possible to create filigree and complex components in one part with

F R A U N H O F E R - C E N T E R F O R

H I G H T E M P E R AT U R E M AT E R I A L S A N D D E S I G N H T L

Additive ManufacturingPlease feel free to contact us:

Fraunhofer-Center for

High Temperature Materials and Design HTL

Gottlieb-Keim-Straße 62

95448 Bayreuth

www.htl.fraunhofer.de

Dr. Sarig Nachum

Tel.: +49 921 78510-500

[email protected]

Joachim Vogt

Tel.: +49 921 78510-417

[email protected]

Fraunhofer-Center HTL is certified to acc. ISO 9001:2008

Technical data CeraFab 7500

Lateral resolution: 40 μm (635 dpi)

Layer thickness: 25 μm

Building envelope (X,Y,Z): 76 x 43 x 150 mm3

Building speed: 2,5 – 10 mm per hour

Available materials

• LithaLox HP 500 (Al2O3)

• LithaCon 3Y 610 purple (3Y-ZrO2)

Technical data M-Flex

Lateral resolution: 64 μm

Layer thickness: 100 μm

Building envelope (X,Y,Z): 400 x 250 x 250 mm3

Building speed: 3 - 12 mm per hour

Available materials

• 316 and 420 stainless steel (infiltrated with bronze optional)

• Inconnel 625

• Iron (infiltrated with bronze optional)

• Tungsten and Tungsten carbide

• More (e.g. ceramic) materials on request

Additive Manufacturing

Using modern techniques of Additive Manufacturing, the

Fraunhofer-Center HTL develops and fabricates customer-specific

parts and prototypes. In doing so, the HTL does not only pursue

the fast and cost-efficient fabrication of parts, but also the

opening up of novel construction and design principles in the

fabrication of ceramic, metal-ceramic and metal components.

In applying techniques of Additive Manufacturing, it is possible

to create filigree and complex components in one part with only

little effort. Hereby, subject to the printing technique, elaborate

post-processing steps can be minimized or even eliminated

completely. Furthermore, depending on the required space,

multiple and also diverse parts can be fabricated simultaneously.

Thus high expenses for molds can be saved, and development

cycles can be shortened.

At Fraunhofer-Center HTL the spectrum for additively manu-

factured parts reaches from the customer-oriented CAD-based

part design and construction over the fabrication of ceramic,

metal-ceramic and metal components up to part-related analysis

methods. The latter include amongst others computed tomogra-

phy, thermooptical measurement procedures, micrographs and

scanning electron microscopy analysis, as well as mechanical and

thermomechanical testing methods.

Service offer

Reaching from the consultancy in terms of Additive Manu-

facturing and the design of CAD-data, over the realization of

feasibility, design and metallurgical studies and fabrication of

prototypes and small-scale series, up to the characterization and

optimization of parts and processes, the HTL provides a customer-

oriented complete package.

Services summary

• CAD model design and construction

• Fabrication of complex and filigree prototypes and small-

scale series

• Feasibility and metallurgical studies

• Extensive material variety:

o Polymers

o Metals and metal-ceramic

o Porous and dense ceramics

• Extensive part characterization:

o Part geometry and contour accuracy

o Thermal properties and processing

o Mechanical and thermomechanical properties

o Micrographs

For the purpose of Additive Manufacturing two different and

complementary methods are available, which enable the fabrica-

tion of technical ceramics as well as of porous ceramic and dense

metal-ceramic or metal parts. Optionally, demonstrator parts

consisting of polymer can be printed testwise in advance.

Slurry-based fabrication

Technical ceramics components are fabricated with a CeraFab

7500 from Lithoz GmbH. This device generates the parts layer-

wise via stereolithography. In this process, an alumina or zirconia

slurry containing a photo-sensitive binding material is being cured

via radiation in the visible radiation through an irradiation mask.

The green parts being generated on a building platform this way

are subsequently detached, cleaned and debindered and sintered

to the final technical ceramics component.

Powder-based manufacturing

For the fabrication of ceramic, metal-ceramic and metal parts a

powder bed printer M-Flex from ExOne is available. With this de-

vice, the components are being fabricated via layerwise jetting of

binder on a powder bed. The parts are subsequently cured in an

oven and relieved from unwetted powder, which can be recycled

and reused for printing. In a final thermal treatment cycle the

components are debindered and sintered, and can be on demand

infiltrated with metal.