TY - JOUR N2 - Topic of this work is to compare metalurgy of cast irons poured into sand moulds and into shell molds at IEG Jihlava company and from it following differencies in structures of thin- and thick-walled castings. This work is dealing with investigation and experimental measurement on surfaces and sections suitable thin- and thick-walled investment castings at IEG Jihlava. Cast irons with flake graphite (grey cast iron) and cast irons with spheroidal graphite (ductile cast iron). Both mechanical and physical properties are determined using calculations from as measured values of wall thicknesses L and Lu, Vickers hardness and remanent magnetism. Measurement results are discussed, findings are formulated and methods for castings metallurgical quality improvement are recommended finally L1 - http://journals.pan.pl/Content/88861/PDF/14_paper.pdf L2 - http://journals.pan.pl/Content/88861 PY - 2015 IS - No 4 DO - 10.1515/afe-2015-0082 KW - Ultrasound structuroscopy KW - Cast irons KW - Metallurgical quality KW - Investment casting A1 - Skrbek, B. A1 - K. Policar PB - The Katowice Branch of the Polish Academy of Sciences DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - Structure Distribution in Precise Cast Iron Moulded on Meltable Model UR - http://journals.pan.pl/dlibra/publication/edition/88861 T2 - Archives of Foundry Engineering ER -