Structure Distribution in Precise Cast Iron Moulded on Meltable Model

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 secti...

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Bibliographic Details
Published in:Archives of foundry engineering 2015-12, Vol.15 (4), p.69-74
Main Authors: Skrbek, B., Policar, K.
Format: Article
Language:English
Subjects:
Cast irons
Investment casting
Metallurgical quality
Ultrasound structuroscopy
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Summary: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.
ISSN:2299-2944
2299-2944
DOI:10.1515/afe-2015-0082