Continuous modification of cast iron by the FLOTRET method

• Autorzy: Hanus A. , Hanusová P.
• Języki publikacji: EN

Abstrakty

EN

Increasing demands on the utility properties of materials used for castings have led to the production of cast iron with a modified shape of graphite, where the required properties are achieved by a change in graphite shape, its size and layout, and a change in the basic structure of the metal. This paper is focused on the continuous method of producing spheroidal graphite FLOTRET. In the introductory section is summarized the theoretical foundations of the secondary treatment of cast irons, especially the FLOTRET flow method, describes the advantages and disadvantages of the method. The practical part is divided into laboratory and operational tests. Laboratory experiments were conducted on a laboratory-type modifier FLOTRET chamber, which was designed and hydraulically optimized. Experiments were focused on the effects of pressure altitude and amount of modifier on the residual values of magnesium, as conditions for a successful modification. The method was tested in two foundries under operating conditions and in one of them was observed a long-term modification process.

Słowa kluczowe

EN

innovative foundry technologies; innovative foundry materials; product development; cast iron; spheroidal graphite; modification of graphite shape; FLOTRET method

PL

innowacyjne technologie odlewnicze; innowacyjne materiały odlewnicze; rozwój produktu; żeliwo sferoidalne; metoda FLOTRET

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 3
• Strony: 43--48
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Hanus A.

autor

Hanusová P.

• Department of Metallurgy and Foundry Engineering, Faculty of Metallurgy and Material Engineering, VŠB - Technical University of Ostrava, Czech Republic,

Bibliografia

• [1] http://www.trademarkia.com/flotret-73017985.html, 30.6.2009.
• [2] Gedeonová, Z. & JELČ J. (2000). Metallurgy of cast irons, Metalurgia liatin, Košice (in Slovac).
• [3] Otáhal, V. (2006). Ductile Iron - Spheroidal Graphite Cast Iron. Monografie, Metal Casting and Foundry Consult, Otahal Consult Brno, 1. vydání, Brno, p. 562.
• [4] Vondrák, V., Hampl, J. & Hanus, A. (2005). Metallurgy of Cast Iron, Secondary processing of molten iron (inoculation, modification), skriptum, ES VŠB-TU Ostrava.
• [5] Hanus, A. & Válek, T. (2004). Overview of the possible ways of modifying the shape of graphite. Foundry Engineering, vol. 52, no. 9, p. 388-389, (in Czech).
• [6] Herzán, Z. (2001). Development of spheroidal graphite cast iron - basic ways of modifying. Foundry Engineering , vol. 49, no.7/8, p. 396-402. (in Czech).
• [7] Mores, A. (2000). Methods of production of castings of spheroidal graphite cast iron in the Czech Republic. Foundry Yearbook, p. 120 - 124. (in Czech).
• [8] Dawson, S. & Zhung, F. (2010). Compacted graphite iron - a material solution for modern diesel engine cylinder bloks and heads. 69. Foundry Congres Hangzhou, China, p. 359-364.
• [9] Vondrák, V. (1988). Slévárenská ročenka 1986, Foundry Yearbook, Brno, (in Czech).
• [10] Hampl, J., Hanus, A. & Vondrák, V. (2001). Flow-continuous modification of cast iron with spheroidal graphite, in Proceedings of the Conference Cooperation 2001, Žilina (in Czech).
• [11] Hampl, J., Hanus, A. & Vondrák, V. (2001). Modification of cast iron in a flow chamber, Acta Metallurgica Slovaca, Košice, TU Košice, vol.7, pp. 146-153 (in Czech).
• [12] Hanus, A. (2001). Continous modification by Flotret method. Doksem. Žilina, Žilinská univerzita (in Czech).