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.
Citations
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A Study on the Improving Extrusion Defects in FDM 3D Printers Jun-Seok Do Journal of the Korean Society of Manufacturing Process Engineers.2024; 23(4): 80. CrossRef
Analysis of Correlation between FDM Additive and Finishing Process Conditions in FDM Additive-Finishing Integrated Process for the Improved Surface Quality of FDM Prints Ji Won Yu, Hyung Jin Jeong, Jae Hyung Park, Dong Hun Lee Journal of the Korean Society for Precision Engineering.2022; 39(2): 159. CrossRef
Analysis on the Warm Bending Process of Magnesium Alloy Sheet Using Additively Manufactured Polymer Die-Set Hyung-Won Youn, Jun-Hyun Kyeong, Keun Park, Chang-Whan Lee Journal of the Korean Society for Precision Engineering.2021; 38(10): 775. CrossRef
Indirect Temperature Measurement in High Frequency Heating Systems Alexander Oskolkov, Igor Bezukladnikov, Dmitriy Trushnikov Sensors.2021; 21(7): 2561. CrossRef
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