Temperature analysis by moving heat source during plasma arc cutting process: an analytical approach

Deepak Kumar Naik (Department of Mechanical Engineering, National Institute of Technology, Rourkela, India)
Kalipada Maity (Department of Mechanical Engineering, National Institute of Technology, Rourkela, India)

World Journal of Engineering

ISSN: 1708-5284

Publication date: 24 June 2019

Abstract

Purpose

This paper aims to work exhibits the temperature distribution over the surface of the workpiece during plasma arc cutting process.

Design/methodology/approach

The moving heat source is taken into consideration for calculating the heat created by plasma arc. The heat is generated at the plasma – liquid metal boundary. The heat of fusion is also considered for estimation because of molten layer separates the plasma and solid layer. This causes to hamper the heat transfer towards the melting front. Eliminating the heat resistance may calculation error at high cutting speed. Power required to melt the material depends on the speed of the cut.

Findings

Higher cutting speed increases the power required. The temperature drop over the layer of molten front increases as the speed of cut increases at higher Peclet number. Different thickness of the molten layer was taken for calculation i.e. zero thickness, 10 and 20 per cent.

Originality/value

The estimated results are shown in non-dimensional form. So, the method can be applied for any other types of material.

Keywords

Citation

Naik, D. and Maity, K. (2019), "Temperature analysis by moving heat source during plasma arc cutting process: an analytical approach", World Journal of Engineering, Vol. 16 No. 4, pp. 569-572. https://doi.org/10.1108/WJE-11-2018-0400

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Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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