Structure Distribution in Precise Cast Iron Moulded on Meltable Model

• Autorzy: Skrbek B. , Policar K.

Identyfikatory

DOI

10.1515/afe-2015-0082

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

ultrasound structuroscopy; cast iron; metallurgical quality; investment casting

PL

żeliwo; jakość metalurgiczna; odlewanie precyzyjne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 4
• Strony: 69--74
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Skrbek B.

• Department of Material Science, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech Republic

autor

Policar K.

• IEG s. r. o., Strojírenská 4/7, 586 01 Jihlava, Czech Republic

Bibliografia

• [1] Suchomel, J. (2013). Rozložení struktury v přesných litinových odlitcích [Structure distribution in prescision cast iron castings at investment casting]. Bachelor Thesis KMTB-209, TU of Liberec, Faculty of Mechanical Engineering, Liberec, CZ.
• [2] Skrbek, B., Bílek, D. (2013). Akustická a metalografická charakteristika grafitu litin [Acoustic and metallography characteristics of cat irons graphite]. In: 43rd Int. Conf. Defektoskopie (2013). NDE for Safety. Brno: Czech Society for NDT, 2013, p.159-164. ISBN 978-80-214-4799-8.
• [3] Skrbek, B. (2008) Metoda magnetické skvrny [Magnetic spot method]. Liberec: Technical University of Liberec, 2008. ISBN 978-80-7372-428-3.
• [4] Skrbek, B. (2014). Combined nondestructive structuroscopy of dispersion metallic materials. In: 11-th ECNDT 2014, Praha, [CD ROM], p.484. ISBN 978-80-214-5635-6.
• [5] Obraz, J. (1989). Zkoušení materialu ultrazvukem [Material testing by ultrasound]. 1-st Edn., SNTL: Praha.
• [6] Skrbek, B., Policar, K. (2009). Problematics of Material Quality and Precision Casting Manufacturing from Cast Iron with Spheroidal Graphite by Investment Casting Technology. In: Sborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava [Transactions of the VŠB - Technical University of Ostrava]. Contribution 09, issue 1, 2009, vol. L II, Series Metallurgy.