Abstract
For 3D printing of high-strength polymers, such as PC (Polycarbonate) and PEI (Polyetheimide), the temperature of the nozzle should exceed the melting temperature of the high-strength materials. At the same time, the temperature of the transfer part, composed of the shaft extruder and the Teflon hose, should be cooled below the glass transition temperature and below the limit temperature of the transfer part. In this study, we analyzed the effect of the flow rate of the cooling fan when the extruder nozzle is heated to 300oC. We compare the natural convection environment, in which the cooling fan is not operated, and the forced convection condition, in which the cooling fan is operated, and analyze the effect on the cooling fan flow rate. The simulation considered the heat transfer in the air and the nozzle, as well as the flow characteristics of the air.
| Original language | English |
|---|---|
| Pages (from-to) | 479-484 |
| Number of pages | 6 |
| Journal | Journal of the Korean Society for Precision Engineering |
| Volume | 35 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2018 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 9 Industry, Innovation, and Infrastructure
Keywords
- 3D printing
- Extruder
- Finite element method
- Fused deposition modeling
- Thermal-fluid coupled analysis
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