Naslov
Influence analysis of the structural defects in the casting load on the heating rate

Autori
Lazić, Ladislav ; Varga, Augustin ; Brovkin, Vladimir L. ; Kizek, Jan

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Metallurgicheskaya teplotehnika

Urednik/ci
Veličko, O.G.

Izdavač
Novaja ideologija

Grad
Dnipro

Godina
2008

Raspon stranica
307-317

ISBN
978-966-8050-52-7

Ključne riječi
continuous steel casting, structural defects, non-metallic inclusions, tensile strength

Sažetak
The object of this paper was to examine the structural defects that influence the mechanical properties of circular cross-section continuous steel casting (API N80) intended for the rolling mill production of the seamless tubes. The values of ultimate strength for tensile specimens at different temperatures are obtained from the standard tensile test. Optical and Scanning Electron Microscope (SEM) are used in investigations of the microstructural features of material structure and defects. The mathematical model of heating process of steel load in the rotary-hearth furnace, which enables the required thermal analysis, was constructed on the basis of the finite element method (FEM). Transient heat conduction and thermal stress analysis were performed in order to determine the heating rate and, via the temperature variation throughout the structure, thermal stresses and deformations.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

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