TY - JOUR N2 - This paper presents the problems related to smelting gray and ductile cast iron. Special attention is paid to the metallurgical quality of cast iron. It depends on the type of furnace, charge materials and the special combination of charge, overheating and holding temperature, melting time, modification and spheroidization method. The evaluation of metallurgical quality has been performed by using derivativethermal analysis (DTA). During the smelting process and secondary metallurgy, the ITACA system was used allowing to obtain information on alloy characteristic temperatures (Tliquidus, TeMin, TeMax, Tsolidus), VPS value, recalescence value, IGQ coefficient, nucleation gauge, porosity etc. The results of investigations and calculations are displayed in the form of graphs and dependencies. It has been shown that the derivative-thermal analysis (DTA) is an effective complement of chemical analysis and it has been found that both the increase in temperature and metal holding time have a negative impact on the metallurgical quality of liquid metal. The metallurgical quality can be improved by using proper composition of charge materials and modifiers. L1 - http://www.czasopisma.pan.pl/Content/114685/PDF/AFE%201_2020_17.pdf L2 - http://www.czasopisma.pan.pl/Content/114685 PY - 2020 IS - No 1 EP - 110 DO - 10.24425/afe.2020.131290 KW - Gray and ductile cast iron KW - Derivative-thermal analysis (DTA) KW - Cast iron properties KW - Holding time and temperature KW - Overheating temperature A1 - Petrus, Ł. A1 - Bulanowski, A. A1 - Kołakowski, J. A1 - Brzeżański, M. A1 - Urbanowicz, M. A1 - Sobieraj, J. A1 - Matuszkiewicz, G. A1 - Szwalbe, L. A1 - Janerka, K. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 20 DA - 2020.02.11 T1 - The Influence of Selected Melting Parameters on the Physical and Chemical Properties of Cast Iron SP - 105 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/114685 T2 - Archives of Foundry Engineering ER -