METHOD AND APPARATUS FOR IN SITU DEBINDING AND SINTERING OF FILAMENT OR PASTE EXTRUSION ADDITIVE MANUFACTURED METAL OR CERAMIC PARTS

• Main Author: ORTEGA VARELA DE SEIJAS, Manuel
• Format: Patent
• Language: English; French; German
• Published: 26.06.2024
• 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; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING METALLIC POWDER

The present invention relates to a method and an apparatus to locally debind and sinter three dimensional dense objects produced by additive manufacturing. The apparatus, therefore, comprises a build platform, at least one heater, an extruder, a monitoring unit and a control unit. In this regard, the extruder is configured to eject building material in layers onto the build platform to form a build part. The heater is configured to heat the build part locally and the monitoring unit is configured to capture data relating the build part. In addition, the control unit is configured to control the extruder and the heater such that a defined ejection point can be driven by the extruder and a defined heating zone and/or heating point can be targeted by the heater.