Izvorni znanstveni članak

https://doi.org/10.31803/tg-20240919083722

Determination of Thermal Characteristics of Fe-C Cast Iron Using Hot Disk Method

Dalibor Viderščak orcid.org/0000-0001-8809-1274 ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department of Materials, Ivana Lučića 5, 10000 Zagreb, Croatia *
Zdravko Schauperl ; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture Department of Materials, Ivana Lučića 5, 10000 Zagreb, Croatia
Sanja Šolić orcid.org/0009-0003-9074-8476 ; University North, Department of Mechanical Engineering, Jurja Križanića 31b, 42000 Varaždin, Croatia
Bojan Milovanović orcid.org/0000-0003-0264-2958 ; University of Zagreb, Faculty of Civil Engineering, Department of Materials, Fra Andrije Kačića-Miošića 26, 10000 Zagreb, Croatia
Ivan Stanković orcid.org/0009-0001-7488-7834 ; Rotarex SA, 24 rue de Diekirch, L-7440 Lintgen, Luxembourg
Mario Šercer orcid.org/0000-0002-4101-4092 ; Development and Training Centre for Metal Industry Metal Centre in Čakovec, Bana Josipa Jelačića 22D, 40 000 Čakovec, Croatia

* Dopisni autor.

Sažetak

This paper explores the influence of graphite shape, type, and dimensions on the thermal characteristics of Fe-C cast iron. Test samples were prepared from blocks of grey and nodular cast iron, specifically examining castings with D and A types of graphite as well as nodular graphite in a ferrite matrix. To analyze the effect of surface texture, sample surfaces were prepared with varying parameters of surface roughness, achieving values of 0.5 μm for polished and 12.6 μm for unpolished surfaces. Thermal characteristics, including thermal conductivity and effusivity, were evaluated using unsteady hot disk methods, with water as the contact agent, to simulate practical thermal conditions. Additionally, the microstructure of each sample was analyzed using optical microscopy. Results indicate that graphite content, type, shape, and surface roughness collectively have the most significant impact on the thermal properties of cast iron. This study’s findings provide valuable insights into optimizing cast iron for applications requiring efficient thermal management and highlight the importance of graphite morphology and surface finish in enhancing thermal performance.

Ključne riječi

graphite; grey cast iron; hot disk method; nodular cast iron; thermal conductivity; thermal effusivity

Hrčak ID:

344754

URI

https://hrcak.srce.hr/344754

Datum izdavanja:

13.3.2026.

Posjeta: 336 *