Development of stereolithographic 3D printing processes

Component Slip 3D printing stereolithography
© Fraunhofer-Zentrum HTL
Bauteil mit Schlicker
Component technical ceramic 3D printing stereolithography
© Fraunhofer-Zentrum HTL
Bauteil aus technischer Keramik

Fraunhofer-Center HTL develops and manufactures prototypes and small series of technical ceramics with 3D printing using a CeraFab 7500 printer of the Lithoz GmbH. This unit produces the ceramic component in layers by stereolithography and LCM methods (Layerwise Ceramic Manufacturing). A photosensitive ceramic slurry is through an exposure mask with light in the visible range selectively irradiated and thereby hardened. The additively produced green part is subsequently debindered and sintered to a dense technical ceramic.

By applying this additive manufacturing method, it is possible to produce filigree and complex components from technical ceramics. This way, expensive post-processing steps can be minimized or completely avoided. The printed parts have a high density, good mechanical stability and high surface quality along with, at the same time, complex geometrical structures.

At Fraunhofer-Center HTL, the scope of services for the additive manufacturing of technical ceramics ranges from 3D CAD-based part design and construction through 3D printing of first plastic samples up to feasibility studies and the additive manufacturing of ceramic components. The scope is completed by the option of component-specific optimization of the debinding and sinter process management usingThermoOptical Measurement methods (TOM) (Publications: Parameters of Inherently Homogeneous Sintering Processes as well as Radical Time Reduction of Debinding Processes as well as The Kinetic Field).

Technical data CeraFab 7500

Lateral resolution: 40 μm (635 dpi)

Layer thickness: 25 μm (corresponding vertical resolution)

Construction speed (X,Y,Z): 76 mm x 43 mm x 150 mm

Building speed: 2.5 – 10 mm per hour

Available materials

  • Aluminium oxide
  • 3 mol .-% yttrium stab. Zirconium oxide
  • Custom-developed printable materials

Additional Publications:




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Additive Manufacturing and Digital Production