TY - JOUR
A1 - Zyska, A.
A1 - Konopka, Z.
A1 - Łągiewka, M.
A1 - Nadolski, M.
PB - The Katowice Branch of the Polish Academy of Sciences
N2 - The possibility of controlling the solidification and cooling time of castings creates prospects of improving their structure and by the same their properties. Thermal properties of the mould constitute therefore an important factor which is necessary to consider while seeking for the mentioned improvement. The presented work illustrates the method of determining some basic thermal coefficients of moulding material, i.e. the coefficient of temperature equalisation a2, known also as the temperature diffusivity, and the heat accumulation coefficient b2, which characterises the ability of moulding material to draw away the heat from a casting. The method consists in experimental determining the temperature field within the mould during the processes of pouring, solidification and cooling of the casting. The performed measurements allow for convenient and exact calculations of the sought-after coefficients. Examinations were performed for the oil bonded moulding sand of trade name OBB SAND ‘E’. The experiment showed that the obtained value of b2 coefficient differs from the value calculated on the basis of theoretical considerations available in publications. Therefore it can be stated that theoretical calculations of the heat accumulation coefficient are thus far not sufficient and not quite reliable, so that these calculations should be verified experimentally.
L1 - http://ijet.czasopisma.pan.pl/Content/87431/PDF/17_paper.pdf
L2 - http://ijet.czasopisma.pan.pl/Content/87431
PY - 2013
IS - No 2
KW - Theoretical basis of casting processes
KW - Moulding materials
KW - Oil binder
KW - Heat accumulation coefficient for moulding sands
KW - Temperature equalization coefficient
T1 - Determination of Heat Accumulation Coefficient for Oil Bonded Moulding Sands
DA - 2013
UR - http://ijet.czasopisma.pan.pl/dlibra/publication/edition/87431
T2 - Archives of Foundry Engineering
DOI - 10.2478/afe-2013-0043
ER -