Abstract
The subject of this paper was to compare the influence of selected coatings on bending strength of moulds and cores manufactured in a furan
technology. In a range of study, there were used three kinds of coatings - water based coating and two kind of alcohol based coating
manufactured by FOSECO. Coating were applicated by brush, overpouring/flow and spraying. For each application method, there were
realized different kind of drying- at ambient temperature, in a furnace and by burning. Physicochemical properties of coatings were such
selected to accommodate them to the application method and type of coating. Based on the conducted studies it was observed that for water
based coating application method doesn’t have an important influence on bending strength and it is necessary to optimize the time and
temperature of drying to achieve better results of bending strength. For alcohol based coatings, drying by burning causes significant
deterioration of bending strength of the mould and core and drying process at ambient allows to obtain high bending strength of mould/cores
in regard to time of drying.
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