METHOD OF IMPREGNATING CERAMIC CORES FOR THE MANUFACTURE OF TURBOMACHINE BLADES
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Mar 12, 2013
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Mar 16, 2012
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Abstract
Impregnation method for mechanically reinforcing a ceramic core used in the manufacture of turbomachinery components by the lost wax casting method, involving dipping the core into a mixture obtained by dissolving polyvinyl alcohol in water, followed by an immersing of the core in pure water and hot polymerization, characterized in that the dosage is between 100 and 200 g of PVAl per litre of water. The dipping impregnation time is preferably between 20 min and 1 h 30.
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