In this process, a ceramic feedstock (granulate) is melted in an extruder and then selectively applied to a building platform. It is very similar to the FDM process, the main difference being the shape of the starting raw material. A variety of commercially available injection molded feedstocks can be processed.

WZR uses the “FFD 150H” device from 3d-figo for this purpose. The maximum component size is 150 mm x 150 mm x 150 mm.

The template provides a CAD file (in STL format) of the component to be produced, which is then divided into slices with the corresponding layer thickness.

The advantages of the process lie in the wide availability of materials. In addition to a variety of ceramic feedstocks, metallic or polymer feedstocks can also be processed. Furthermore, the process can be flexibly adapted to the requirements and desired quality by supporting different nozzle diameters. Therefore, the process is also very well suited for small series production in addition to prototype development and individual production.

The component created by this process is removed from the building platform after production and then debound and fired to give it its final properties.




Advantages

High construction speeds possible (up to approx. 300cm3/h) High strength Low porosity Use of commercial injection moulding feedstocks possible

Disadvantages

Depending on the geometry of the building, supports are necessary for overhangs Low to medium resolution (depending on the nozzle used) The surface has clearly visible indentations between the layers