The rate and effectiveness of carburization to the sort of carburizer

• Autorzy: Janerka K.
• Języki publikacji: EN

Abstrakty

EN

The obtaining of demanded carbon contents during melting the cast iron with bounded pig iron's portion is important problem for many foundries. There are searched the effective methods and carburizers, which would ensure obtaining of big carbon increases with great repeatability as quick as possible. The aim of presented researches was definition of influence of essential factors characterized the carburization and the sort of carburizer on the rate and effectiveness of process. The cast iron melts are presented only on the basis of steel scrap with the portion of graphitoidal, coke and anthracite carburizers. Two methods of carburization are taken into consideration during the experiments were carried out: the addition of carburizer to charge in solid in the initial period of melting and addition of carburizer on surface of liquid metal. The obtained researches results and their analyze allow to choose the corresponding method and the sort of carburizer. One can state, that the best carburizer is synthetic graphite, if the rate and effectiveness of process is considerate and the best method of carburization in the electric inductive furnace is addition of carburizer to charge in solid. In the subsequent part of researches the analyze of influence of carburizer on the structure of grey cast iron and ductile cast iron. The initial researches has showed the differences in obtained structures of synthetic cast iron melted only on the basis of steel scrap and defined kind of carburizer.

Słowa kluczowe

EN

foundry processes; cast iron; carburization; carburizers; rate of carburization

PL

procesy odlewnicze; żeliwo; nawęglanie; nawęglacze

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 4
• Strony: 95--100
• Opis fizyczny: Bibliogr. 16 poz., tab., wykr.

Twórcy

autor

Janerka K.

• Silesian University of Technology, Department of Foundry, Towarowa St 7, 44-100 Gliwice, Poland,

Bibliografia

• [1] K. Janerka, D. Bartocha, J. Gawroński, The technology of liquid iron alloys by the method of pneumatic injection, Archives of Foundry, PAN Katowice, 2004, vol. 4, nr 13, s. 115 - 120 (in Polish)
• [2] M. Kanafek, D. Homa, K. Janerka, The iron cast carburizing in the TEKSID Poland S. A. foundry with the POLKO pneumatic device, Foundry Review, 1999, nr 7 (in Polish)
• [3] J. Kokoszka, J. Markowski, K. Janerka, J. Jezierski, D. Homa, W. Chmielorz, The pneumatical carburization of cast iron in the conditions of WSK "PZL - RZESZÓW" S.A., Solidification and CFigtallization Metals and Alloys , PAN Katowice, v.1, nr 41, 1999, s. 53-58 (in Polish)
• [4] A. Chojecki, T. Smętek, R. Hawranek, Technical and economical aspects of the pneumatic recarburising of cast iron in furnace, Foundry Review, nr 11, 2002, str. 361-369
• [5] K. Janerka, Parameters of the process in pneumatic liquid metal carburizing, Conf. Proceedings 12th Inter. Scien. Confer. Achievements in Mechanical & Materials Engineering AMME, Polish Academy of Science, Zakopane, s. 403-408, 7-10.12.2003.
• [6] K. Janerka, J. Jezierski, Z. Piątkiewicz, H. Szlumczyk, Rate of the process in pneumatic liquid metal carburizing, Mat. International Scientific Conference Materials and Mechanical Engineering M2E`2000, s. 237-240
• [7] K. Janerka, D. Homa, S. Jura, J. Gawroński, J. Jezierski, Rates characterized the process of pneumatical carburization, Archives of Foundry, vol. 1, nr 1/2, 2001, s. 39-44 (in Polish)
• [8] J. Kuźnicka, W. Kuźnicki, A. Górny, Modern carburizers by ELKEM in Elgraph batch, Foundry Review, nr 7-8/2000 (in Polish)
• [9] C. Wu, V. Sahajwalla, Dissolution Rates of Coals and Graphite in Fe-C-S Melts Ironmaking: Influence of Melt Carbon and Sulfut on Carbon Dissolution, Metallurgical and Materials Transactions B, vol 31B, April 2000
• [10] Gadenau H., Mulanza J.P.: Carburization of hot metal by industrial and special cokes, Steel Research, nr 3, 1990
• [11] D. Bandyopadhyay, S.D. Singh, D. Sanyal, K.K. Singh, K.N. Singh, A study on dissolution kinetics of carbon in liquid iron bath, Chemical Engineering Journal 94 (2003) 79-92
• [12] H. Sun, Factors Influencing Dissolution of Carbonaceous Materials in Liquid Iron, Metallurgical and Materials Transactions B, vol. 36B, December 2005-893
• [13] Tochowicz S.: Biblioteka Metalurga - Smelt of steel in electric furnaces, Wydaw. Śląsk, 1988r. (in Polish)
• [14] Kosowski A.: The carburization kinetics of cast iron in the inductive furnace, Foundry Review, Nr 1-3, 1982
• [15] D. Bartocha, J. Gawroński, K. Janerka, Properties of cast iron depending on charge materials, Archives of Foundry, PAN - Katowice, nr 9, 2003 (in Polish).
• [16] D. Bartocha, K. Janerka, J. Suchoń, Charge materials and technology of melt and structure of gray cast iron, Journal of Materials Processing and Technology, 162-163, 2005, s. 465-470.