Effective inoculation of low-sulphur cast iron

• Autorzy: Kopyciński, D. , Guzik, E.
• Języki publikacji: EN

Abstrakty

EN

The study proves that by introducing the disintegrated steel scrap to low-sulphur cast iron still before the inoculation carried out with a conventional graphitising inoculant, the mechanical properties similar to those obtained during the inoculation treatment carried out on cast iron with the recommended high sulphur content are achieved. The said operation increases the number of crystallisation nuclei for dendrites of the primary austenite. In this case, the iron particles act as substrates for the nucleation of primary austenite [ypsilon]p due to a similar crystallographic behaviour of the regular face centered cubic lattice The more numerous are the dendrites of primary austenite, the less free space is available in the interdendritic spaces for the formation of graphite eutectic grains, which makes the structure more refined (more eutectic grains) and the mechanical properties higher.

Słowa kluczowe

PL

żeliwo; złom stalowy; struktura; właściwości mechaniczne

EN

inoculation; cast iron; dendrites; structure; mechanical properties

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 77-80
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Kopyciński, D.

autor

Guzik, E.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Kraków,

Bibliografia

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• [8] R. Elliott, Cast Iron Technology, London, UK, Butterworths, 1988.
• [9] I. Riposan, M. Chisamera, S. Stan, T. Skaland, M. Onsoien, Analysis of possible nucleation sites in Ca/Sr over-inoculated grey cast irons. Transactions AFS, 2001, 109, 1151-1162.
• [10] A.Dioszegi, K.Z. Liu, J.L. Svensson, Inoculation of primary austenite in grey cast iron. Cast Metals Research, 2007, 20, 2, 68-72.
• [11] E. Guzik, D. Kopyciński, The new procedure inoculation of grey cast iron. Application Polish Patent, 2008 (in prepare).