Engineering Mechanics

International Conference

Proceedings Vol. 26 (2020)


ENGINEERING MECHANICS 2020

26th INTERNATIONAL CONFERENCE
November 24 – 25, 2020, Brno, Czech Republic
;
Editors: Vladimír Fuis

Copyright © 2020 Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics

ISBN 978-80-214-5896-3 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

IMPROVING CUTTING CAPABILITY OF PLASMA BEAM BY MODIFYING THE NOZZLE GEOMETRY SUPPLIED BY FEM
Málek M., Mičian M.
pages 334 - 337, full text

The paper deals with the effect of nozzle orifice geometry to the shape of plasma beam. Investigation focused to improvement cutting features like cutting speed, width and quality of cutting gap. The FEM analyse in the program Ansys - Fluent has been used for predictions behaviour of plasma beam depends on the modified nozzle orifice, especially influencing the plasma flow rate. The simulation results were the basis to produce a specific modified nozzle shape. Experimental cuts were made on S235 steel of 10 mm thickness. Based on all the analyses performed, the simulation showed that the shape of the orifice in the plasma torch nozzle affects the shape of the plasma beam. However, the positive results were not confirmed in the evaluation of the cut quality.


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Ownership of copyright in original research articles remains with the Authors, and provided that, when reproducing parts of the contribution, the Authors acknowledge and/or reference the Proceedings, the Authors do not need to seek permission for re-use of their material.

All papers were reviewed by members of the scientific committee.


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