THERMAL SCIENCE

International Scientific Journal

Vukić N. Lazić

,

Aleksandar S. Sedmak

,

Miroslav M. Živković

,

Srbislav M. Aleksandrović

,

Rajko D. Čukić

,

Radomir D. Jovičić

,

Ivana B. Ivanović

THEORETICAL-EXPERIMENTAL DETERMINING OF COOLING TIME (T8/5) IN HARD FACING OF STEELS FOR FORGING DIES

ABSTRACT
This paper investigates the accuracy of analytical, empirical, and numerical expressions, i. e. the most favourable methods for calculating the cooling time from 800 to 500°C (t8/5). The degree of accuracy of time t8/5 is very significant, because it determines the cooling rate, and consequently the structural changes in heat affected zone for hard faced layers. Based on the presented results, one can conclude that the finite element method provides the best conformity with the experiment and among analytical and empirical formulas the same goes for the expression of Japanese authors, for the case of hard facing of plane and prismatic parts.
KEYWORDS
cooling time (t8over5), temperature cycle, temperature field, hard facing, input heat, empirical formulas, finite elements method
PAPER SUBMITTED: 2009-02-08
PAPER REVISED: 2009-05-21
PAPER ACCEPTED: 2009-06-28
DOI REFERENCE: https://doi.org/10.2298/TSCI1001235L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE Issue 1, PAGES [235 - 246]
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Theoretical-experimental determining of cooling time (t8/5) in hard facing of steels for forging dies

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence