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Screw-assisted 3D printing with granulated materials: a systematic review
Joaquim Manoel Justino Netto1, Henrique Takashi Idogava1, Luiz Eduardo Frezzatto Santos1
1Department of Mechanical Engineering, São Carlos School of Engineering, University of São Paulo, Sao Paolo, Brazil.
The International Journal, Advanced Manufacturing Technology
|June 7, 2021
Summary
This review analyzes screw-assisted extrusion additive manufacturing (EAM) systems that use granulated materials. It details extruder designs and capabilities to advance 3D printing technology.
Area of Science:
- Additive Manufacturing
- Materials Science
- Mechanical Engineering
Background:
- Screw-assisted extrusion additive manufacturing (EAM) is crucial for expanding 3D printing material options and increasing deposition rates.
- Direct granulation feedstock reduces costs and complexity compared to traditional fused filament fabrication (FFF).
- Diverse designs and lack of standardized terminology hinder the selection of optimal screw-assisted EAM systems.
Purpose of the Study:
- To systematically review screw-assisted EAM systems capable of direct granulation.
- To analyze extruder designs, capabilities, and material processing characteristics.
- To identify research gaps and propose a development workflow for screw extrusion 3D printers.
Main Methods:
- Systematic literature search to identify relevant screw-assisted EAM systems.
- Categorization of identified systems into experimental printheads and commercial systems for small- and large-scale applications.
- Analysis of extruder modifications, materials processed, and performance requirements.
Main Results:
- 61 articles describing diverse screw-assisted EAM systems were identified and categorized.
- Key extruder modifications and their impact on material processing and performance were discussed.
- A general workflow for developing screw extrusion-based 3D printers was proposed.
Conclusions:
- Screw-assisted EAM offers significant advantages over FFF for material versatility and efficiency.
- Further research is needed to standardize terminology and optimize extruder designs for various applications.
- This review provides a comprehensive overview to guide future development and research in screw-assisted EAM.
