Exogeneous inoculation of pure Al with use of electromagnetic field

• Autorzy: Szajnar J. , Wróbel T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In paper is presented problem concerning inoculation of pure aluminium primary structure, which is realized mainly by intensification of liquid metal movement in mould by use of electromagnetic field. Design/methodology/approach: In aim of realization of forced movement during the crystallization of liquid metal was used rotate electromagnetic field, which is generated by induction coil fed with frequency of supply current from 25 to 100Hz. Effect of structure refinement obtained by influence of electromagnetic field was compared with refinement obtained by use of traditional inoculation, which consists in introducing of additions in form of titanium and boron to metal bath. Findings: The results of investigations and their analysis show possibility of effective refinement of pure aluminium primary structure, only with use of electromagnetic field. Research limitations/implications: I further research, authors of this paper are going to application of introduced method of Al casting with use of electromagnetic field in continuous casting stand. Practical implications: The work presents refinement of structure method which are particularly important in continuous and semi – continuous casting where products are used for plastic forming. Originality/value: The value of this paper resides in new effective method of inoculation of pure Al, which was realized only by use of electromagnetic field.

Słowa kluczowe

EN

casting; aluminium; electromagnetic field; frequency

PL

odlew; aluminium; pole elektromagnetyczne; częstotliwość

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 43, nr 1
• Strony: 448--454
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Szajnar J.

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

autor

Wróbel T.

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

Bibliografia

• [1] E. Fraś, Crystallization of metals. WNT, Warsaw, 2003 (in Polish).
• [2] B. Chalmers, The structure of ingots, Journal of the Australian Institute of Metals 8 (1963) 255-262.
• [3] T. Wróbel, Inoculation of of pure aluminium structure with use of electromagnetic field. Tendency of Optimization of Production Systems in Foundry - Monograph, Łódź, 2010, 253-262 (in Polish).
• [4] S. Pietrowski, Modyfication of AK20 silumin with use of Ti, B and P admixtures, Archives of Foundry 43 (2000) 451-456 (in Polish).
• [5] S. Pietrowski, Complex silumins, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 101-105.
• [6] M. Robert, E. Zoqui, F. Tanabe, T. Motegi, Producing thixotropic semi-solid A356 alloy: microstructure formation x forming behaviour, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 19-26.
• [7] M. Kciuk, Structure, Mechanical properties and corrosion resistance of AlMg5 alloy, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 185-188.
• [8] T. Sritharan, H. Li, Optimizing the composition of master alloys for grain refining aluminium, Scripta Materialia 9 (1996) 1053-1058.
• [9] Z. Zamkotowicz, T. Stuczński, B. Augustyn, M. Lech-Grega, W. Wężyk, Sedimentation of intermetallic compounds in liquid aluminium alloys of type AlSiCu(Ti), Proceedings of the Scientific Conference Founding of Nonferrous Metals - Science and Technology (2003) 77-82 (in Polish).
• [10] Polish Standard: PN-EN 573-3. PKN, Warsaw, 2005 (in Polish).
• [11] J. Donnay, H. Ondik: Crystal date - Determinative Tables, NSRDS - JCPDS (1973).
• [12] O. Keles, M. Dundar, Aluminium foil: its typical quality problems and their causes, Journal of Materials Processing Technology 186 (2007) 125-130.
• [13] J. Szajnar, M. Stawarz, T. Wróbel, W. Sebzda, B. Grzesik, M. Stępień, Influence of continuous casting conditions on grey cast iron structure, Archives of Materials Science and Engineering 1 (2010) 45-52.
• [14] T. Wróbel, J. Szajnar, Influence of supply voltage frequency of induction coil on inoculation efficiency of pure aluminium structure, Archives of Foundry Engineering 2 (2010) 203-208.
• [15] J. Szajnar, M. Stawarz, T. Wróbel, W. Sebzda: Influence of electromagnetic field on pure metals and alloys structure, Journal of Achievements in Materials and Manufacturing Engineering 34/1 (2009) 95-102.