FIELD: metallurgy.
SUBSTANCE: method of impregnation of a ceramic rod, used in the manufacture of turbo machine blades by casting consumable patterns, includes the immersion of the rod into a solution of polyvinyl alcohol PVAl in water, the subsequent immersion of the rod into pure water and high temperature polymerization of the rod. A solution of polyvinyl alcohol in water with a concentration of 100 to 200 g/l is used. Preferably, the impregnation time of the rod is from 20 minutes to 1 hour 30 minutes.
EFFECT: increased mechanical strength of the ceramic rod.
5 cl, 3 dwg
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