A Comparison of Selected Methods of Graphitizing Inoculation Applied after the Spheroidizing Treatment

• Autorzy: Gunia P. , Soiński M.
• Języki publikacji: EN

Abstrakty

EN

The work compares the effectiveness of selected methods of graphitizing inoculation applied after the spheroidization in the slender tundish ladle of 1 Mg capacity. The inoculation was carried out according to the three various options. The first one was performed simply by means of the block of inoculant inserted in the gating system of the mould, the second one started with initial inoculation by the in-stream method during the transfer of metal from the slender ladle to the pouring ladle and was completed with the secondary modification by means of the inoculant insert placed in the mould, the third one consisted in similar initial inoculation by the in-stream method during the transfer of metal from the slender ladle to the pouring ladle followed by the secondary inoculation, again by the in-stream method, applied during the pouring operation. Examination of cast iron structure allowed to find that the best results of inoculation are achieved in the case of inoculation carried out according to the Option III, though in all cases it was possible to produce cast iron of EN-GJS-400-15 grade meeting the demands of the Standard.

Słowa kluczowe

EN

metallography; cast iron structure; spheroidization; nodular graphite; graphitizing inoculation

PL

metalografia; struktura żeliwa; sferoidyzacja; grafit sferoidalny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 2s
• Strony: 95--99
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Gunia P.

• “TERIEL” Iron Foundry, Gostyń, Poland

autor

Soiński M.

• Technical University of Częstochowa, Department of Foundry, Częstochowa

Bibliografia

• [1] Thielemann T. (1970). Zur Wirkung von Spurenelementen im Gusseisen mit Kugelgraphit. Giessereitechnik 16(1), 16-24.
• [2] Sorelmetal – Rio Tinto Iron & Titanium Inc. (2006). The Sorelmetal Book of Ductile Iron. Warsaw: Metals & Minerals Sp. z o.o.
• [3] Podrzucki C. (1991). Cast iron. Structure, properties, applications. Cracow: Ed. ZG STOP.
• [4] Fraś E., Podrzucki C. (1981). Modified cast iron. 2nd edition. Cracow: Ed. AGH.
• [5] Soiński M. S., Wawrzyniec A. (2010) Initial assessment of some selected inoculants for grey cast iron. Archives of Foundry Engineering. 10(2), 155-158.
• [6] Soiński M. S., Wawrzyniec A. (2010) Initial assessment of secondary inoculation of grey cast iron. Archives of Foundry Engineering. 10(4), 205-208.
• [7] Soiński M. S., Jędrecki P., Grzesiak R. (2011). Inoculation of grey cast iron with master alloys containing strontium and zirconium. Archives of Foundry Engineering. 11(3 special), 195-198.
• [8] Polish Standard PN-EN 1563:2000. Founding. Spheroidal graphite cast irons. Warsaw: PKN.
• [9] SKW Giesserei. (2012). Germalloy inoculant for castings of nodular cast iron – information cards. Ed. ASK Chemicals Poland Ltd.
• [10] Polish Standard PN-EN ISO 945-1:2009. Microstructure of cast irons. Part 1: Graphite classification by visual analysis. Warsaw: PKN.