Modares Mechanical Engineering

Modares Mechanical Engineering

Experimental and analytical effect of nuzzle diameter on screw torque and operating pressure in pellet 3D printing

Document Type : Original Research

Authors
Mohammad Mahdi Salehi 1
Mohammad Reza Movahhedy 2
1 Sharif University of Technology
2 Sharif university of Technology
10.22034/mme.23.4.265
Abstract
Nowadays using 3D printing for prototyping is well known in industrial applications and there are efforts to make functional parts with this technology to reach low volume production markets. By using pellets rather than filaments, the limitations caused by lack of variety of materials can be conquered. Also there will be no need to make a massive part as several divided parts and then glue them together.

In this article pellets of ABS, that are well known and functional in industry, are analysed for an extruder to investigate the ability of pellet material extruding. Characteristic specifications of extruder such as operating pressure, screw rotational speed and required torque for rotating the screw are achieved for they are important factors to find out the mechanism for experimental tests and selecting suitable operating parts such as motor and gearbox. At the end, the experimental tests on designed system are done and the result approved the trends of theoretical data.
Keywords
3D printing
Pellet
Extruder
Torque
Operating pressure
Experimental tests

Subjects

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Modares Mechanical Engineering
Volume 23, Issue 4
March 2023
Pages 265-273