Initial assessment of effectiveness of some selected inoculants for grey cast iron

• Autorzy: Soiński M. S. , Wawrzyniec A.
• Języki publikacji: EN

Abstrakty

EN

The influence of four inoculants: FeSi75, Zircinoc, Foundry Grade, and Inogen has been determined in the work. The additions have been introduced in the amount of 0,2% into the cast iron exibiting the degree of saturation S_C = 0,824. The shape, the size, and the arrangement of graphite precipitates have been determined, as well as the cast iron matrix type; both the initial cast iron and the modified alloy have been examined, the latter cast after either 2 or 8 minutes after the inoculation treatment. Additionally the chilling tendency of the cast iron has been assessed, the number of eutectic cells has been determined, and mechanical properties (strength and hardness) of the alloy have been examined. It has been found that each of the inoculants significantly lowers the cast iron chilling tendency, however not to the same degree. Additionally, the graphite arrangement is changed from interdendritic one present in the initial cast iron to the arrangement of prevailing A type revealed in the modified alloy. The inoculation treatment leads to the distinct growth in the number of eutectic cells and to the increasing of cast iron tensile strength, the latter however not to the large extent.

Słowa kluczowe

EN

grey cast iron; inoculation; inoculants; eutectic grain; mechanical properties

PL

żeliwo szare; modyfikatory; ziarna eutektyczne; właściwości mechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 2
• Strony: 155--158
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Soiński M. S.

• Technical University of Częstochowa, Chair of Foundry, av. Armii Krajowej 19, Częstochowa, Poland

autor

Wawrzyniec A.

• Technical University of Częstochowa, Chair of Foundry, av. Armii Krajowej 19, Częstochow, Poland

Bibliografia

• [1] Podrzucki C.: Cast iron. Structure, properties, applications, Ed. ZG STOP, Cracow (1991) (in Polish).
• [2] Fraś E., Podrzucki C.: Modified cast iron. 2nd edition, Ed. AGH, Cracow (1981) (in Polish).
• [3] Warchala T.: Cast iron metallurgy and casting, Part 2. TU Częstochowa (1995) (in Polish).
• [4] Polish Standard PN-61/H-04675 Technological examination of grey cast iron. Checking the cast iron chilling tendency, (in Polish).
• [5] Polish Standard PN-EN 1561: Founding. Grey cast iron (in Polish).
• [6] Polish Standard PN-EN ISO 945: Cast iron. Determining of features of graphite precipitates (in Polish).
• [7] Polish Standard PN-75/H-04661: Grey cast iron, nodular cast iron and malleable. Metallographic examinations. Determining of microstructure (in Polish).
• [8] Polish Standard PN-EN 10 002-1+AC1: Metals. Tensile test. Methods of examinations at ambient temperature (in Polish).
• [9] Polish Standard PN-EN ISO 6506-1: Metals. Hardness test according to Brinell method. Part 1: Method of examination (in Polish).