TY - JOUR N2 - A determination of the heating degree of the moulding sand with bentonite on the grounds of simulating investigations with the application of the MAGMA program, constitutes the contents of the paper. To this end the numerical simulation of the temperature distribution in the virtual casting mould was performed. It was assumed that the mould cavity was filled with a moulding sand with bentonite of a moisture content 3,2 % and bentonite content 8 %. A computer simulation can be used for predicting the heating degree of moulding sands with bentonite. Thus, prediction of the active bentonite (montmorillonite) content in individual layers of the overheated moulding sand can be done by means of the simulation. An overheating degree of a moulding sand with bentonite, and thus the bentonite deactivation depends on a temperature of a casting alloy, casting mass, ratio of: masssand : masscasting, moulding sand amount in the mould and contact area: metal – mould (geometry of the casting shape). Generally it can be stated, that the bentonite deactivation degree depends on two main factors: temperature of moulding sand heating and time of its operation. L1 - http://www.czasopisma.pan.pl/Content/87185/PDF/30_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/87185 PY - 2012 IS - No 4 DO - 10.2478/v10266-012-0128-4 KW - Green sand KW - Bentonite KW - Simulation KW - temperature KW - Degradation of montmorillonite A1 - Holtzer, M. A1 - Dańko, R. A1 - Żymankowska-Kumon, S. A1 - Lelito, J. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2012 T1 - Determination of the Overheating Degree of Moulding Sand with Bentonite - on the Grounds of Simulation Investigations UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/87185 T2 - Archives of Foundry Engineering ER -