MATERIAL DATA SHEET FOR PHENOLIC-DIRECT-BINDING (PDB) SAND MOLDS Material data sheet for Phenolic - Direct - Binding (PDB) sand molds MOLDING MATERIALS Molding material Silica sand Average grain size (µm) Molds and cores with demanding requirements for surfaces Total loss on ignition Molding material Untreated silica sands in different granulations Phenolic binder Layer thickness Resolution Accuracy approx. 200 µm (depending on sand used) + 0.1 % (min. + layer thickness) Bending strength 250 – 500 N/cm² (depending on sand or binder used) Recycling rate almost 100 % of the unbound sand Warranty/Disclaimer: The performance characteristics of these products may vary according to product application, operating conditions, material combined with, or with end use. voxeljet makes no warranties of any type, express or implied, including, but not limited to, the warranties of merchantability or fitness for aparticular use. ©voxeljet. All rights reserved. The designations voxeljet, VX200, VX500, VX1000, VX2000 and VX4000 are registered trademarks of voxeljet AG. Specifications subject to change without notice. voxeljet AG Paul - Lenz -Straße 1a 86 316 Friedberg Germany Tel + 49 821 - 7483 - 100 Fax + 49 821 - 7483 - 111 info @ voxeljet.com www.voxeljet.com Americas EMEA AsiaPacific Validity: 11/2017. We reserve the right to make technical changes. voxeljet is ISO 9001- certified.

PROCESS The build process is as follows: Sand is applied to the build platform in the job box. The sand layer is smoothed out during the application process. Then a specially developed phenolic resin binder is printed on the sand at the locations that correspond with the cut through the component. The build platform is then lowered by one layer. The application, printing and lowering processes are repeated until the component is complete. The sand is heated using an infrared lamp in process. A sufficient strength is reached at the time of unpacking. Therefore both small and large components can...