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Number of results: 3
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Abstract

The transient thermal model of the permanent magnet linear actuator (PMLA) has been considered. The characteristics of heating have been calculated including the main subdomains of the actuator. The carcasses from various materials have also been considered. The calculations have been verified experimentally and a good conformity was obtained.

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Authors and Affiliations

Bronisław Tomczuk
Andrzej Waindok
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Abstract

This paper presents the methodology for determining thermal strains and stresses during heating the charge in a rotary furnace. The calculations were made with the original software, which uses the finite element method. The heat transfer boundary conditions used for computing were verified on the basis of industrial tests. Good compatibility between the experimental data and numerical calculations was obtained. The possibility of the material cracking occurrence was checked for a set exhaust gas temperature distribution on the furnace length. As a result, it was possible to develop steel heating curves characterized by short process times.

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Authors and Affiliations

A. Gołdasz
ORCID: ORCID
Z. Malinowski
ORCID: ORCID
A. Cebo-Rudnicka
ORCID: ORCID
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Abstract

Heat consumption and steel loss for scale determine the costs of a heating process. The heating rate influences both. This paper evaluates the heating rate of a long charge made of three various materials, depending on the changes of the furnace atmosphere on the rotary furnace circumference. Numerical computing was performed based on a formulated heat transfer model in the rotary furnace chamber, while considering the growth of the scale layer. One heating curve was selected, which has allowed the heating time to be reduced by 36% while limiting the scale loss by 40%. It was also shown that the thermal stresses and strains should not lead to fractures of the charge heated.
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Authors and Affiliations

B. Hadała
1
ORCID: ORCID
M. Rywotycki
1
ORCID: ORCID
Z. Malinowski
1
ORCID: ORCID
Sz. Kajpust
2
S. Misiowiec
2

  1. AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland
  2. Zarmen FPA Sp. z o.o., 39 Filarskiego Str., 47-330, Zdzieszowice, Poland

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