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This thesis deals with the production of compact graphite iron in a foundry HEUNISCH Brno, s.r.o. The first part describes the structure, chemical composition, properties, methods of modification and inoculation. The following section describes the production of cast iron, metallographical evaluation of the planimetric method and image analysis.

This diploma thesis in the theoretical part deals with classification of cast iron, problems of gray cast iron production, methods of inoculation and valuation of the gray iron quality by means of thermal analysis. The aim of practical part was to investigate effectiveness of inoculation of two different inoculants using thermal analysis. In terms of mechanical properties, hardness and ultimate tensile strength were measured. Metallographic specimen were evaluating by means of image analysis software.