• SHISHIR KUMAR SINGH
• RAJESH K SATANKAR

— Fused Deposition modeling is the prime method of Additive manufacturing process used for the polymer manufacturing. As in this process the polymer filament enter in to the heat sink through feed filament feed mechanism and reaches to the heat block where it get melts and through the nozzle it get extruded and deposited layer by layer in order to build the component. In order to extrude the PLA melt, the feed polymer filament in solid form is used as a plunger. In order to use Polymer filament as a plunger, it is necessary to remain polymer filament is in solid state inside the heat sink. In order to remain feed filament in solid state it is necessary to remain the temperature of the heat sink much below the melting temperature of polymer. In order to increase the heat transfer rate from the heat sink it is necessary to increase the surface area of heat sink. Therefore in order to increase the surface area of heat sink, fins are provided on the heat sink. Here in this work thermal behavior of heat sink is analyzed. Here it also contains the optimization of heat sink fins profile, in this analysis heat sink having circular, triangular, elliptical and rectangular having elliptical perforation fin are analyzed for working material that is poly-lactic-acid (PLA). It also finds out the effect of pressure drop inside the liquefier and calculates the optimum pressure drop inside the liquefier through analyzing the 27 combinations of nozzle angle and nozzle diameter.

"Numerical and analytical analysis of 3D printer extruder in Fused Deposition Modelling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 10, page no.10-22, October-2017, Available :http://www.jetir.org/papers/JETIR1710002.pdf

"Numerical and analytical analysis of 3D printer extruder in Fused Deposition Modelling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 10, page no. pp10-22, October-2017, Available at : http://www.jetir.org/papers/JETIR1710002.pdf