Advanced Technologies and Materials

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut ero labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco.

GUIDE FOR AUTHORS SUBMIT MANUSCRIPT
Vol. 47 No. 1 (2022)
Original articles

3D Printing of parts using metal extrusion: an overview of shaping debinding and sintering technology

Luigi Maria Galantucci
Politecnico di Bari, Dipartimento di Meccanica Matematica e Management Via Edoardo Orabona, 4 - 70125 Bari – Italy
Alessandro Pellegrini
Politecnico di Bari, Dipartimento di Meccanica Matematica e Management Via Edoardo Orabona, 4 - 70125 Bari – Italy
Maria Grazia Guerra
Politecnico di Bari, Dipartimento di Meccanica Matematica e Management Via Edoardo Orabona, 4 - 70125 Bari – Italy
Fulvio Lavecchia
Politecnico di Bari, Dipartimento di Meccanica Matematica e Management Via Edoardo Orabona, 4 - 70125 Bari – Italy

Published 2022-06-01

abstract views: 28 // Full text article (PDF): 17


Keywords

  • Fused Filament Fabrication,
  • Metal Extrusion,
  • SDS process

How to Cite

Galantucci, L. M., Pellegrini, A., Guerra, M. G., & Lavecchia, F. (2022). 3D Printing of parts using metal extrusion: an overview of shaping debinding and sintering technology. Advanced Technologies and Materials, 47(1), 25–32. https://doi.org/10.24867/ATM-2022-1-005

Abstract

Additive Manufacturing (AM) is the fabrication of real three-dimensional objects from plastics and metals by adding material, layer by layer. One of the most common AM processes is the Material Extrusion (ME) based on different approaches: plunger, filament and screw. Material Extrusion technologies of metal-polymer composites is expanding and it mainly uses the filament or plunger-based approaches. The feedstock used is a mixture of metal powder (from 55 vol% to about 80 vol%) dispersed in a thermoplastic matrix, as the Metal Injection Molding (MIM) materials. The process consists of three steps: shaping, debinding and sintering. The first step provides the extrusion of filament to realize a primary piece called “green part”; subsequent steps, debinding and sintering, allow to obtain a full metal part by dissolving the polymeric binder. The latter can be carried out using solvents, heat and the combination of them. The interest toward this technology is driven by the possibility to replace other Metal AM technologies, such as Selective Laser Melting or Direct Energy Deposition, in sectors like rapidtooling or mass production, with several benefits: simplicity, safety to use and saving material and energy. The aim of this keynote is to provide a general overview of the main metal ME technologies considering the more technical aspects such as process methodologies, 3D printing strategy, process parameters, materials and possible applications for the manufacturing of samples on a 3D consumer printer.

PlumX Metrics

Dimensions Citation Metrics