SELECTIVE SUPERPARAMAGNETIC SINTERING AND AN INK SUITABLE THEREFOR

• Main Authors: HUPFELD, Tim, MISPELKAMP, Dominik, LEUCHS, Susanne, PIERICK, Vanessa, WUNNICKE, Odo, HEINDL, Frank, FRINGS, Bodo, HOLTHAUSEN, Michael, CORNELIUS, Maximilian, GROSSE-PUPPENDAHL, Thomas, MACK, Helmut, MONSHEIMER, Sylvia
• Format: Patent
• Language: English; French; German
• Published: 10.09.2021
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ADHESIVES; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; CASTING; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; ELECTRICITY; FILLING PASTES; INDUCTANCES; INKS; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSFORMERS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Die Erfindung betrifft Verfahren zur Herstellung von dreidimensionalen Objekten mittels Powder Bed Fusion-Verfahren, wobei Tinten umfassend superparamagnetische Partikel und Lösemittel eingesetzt werden. Das Sintern erfolgt durch ein magnetisches Feld mit einer Frequenz von 50 kHz bis 5 GHz. The invention relates to methods for producing three-dimensional objects by powder bed fusion methods using inks comprising superparamagnetic particles and solvents. Sintering occurs by a magnetic field with a frequency of between 50 kHz to 5 GHz. L'invention concerne des procédés de production d'objets tridimensionnels par des procédés de fusion sur lit de poudre faisant appel à des encres comprenant des particules superparamagnétiques et des solvants. Le frittage se produit sous l'effet d'un champ magnétique ayant une fréquence comprise entre 50 kHz et 5 GHz.