FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Casts to be processed are placed in drum cells so that their cavity open section is directed downward. Said drum with casts is arranged in tank with alkaline solution on inclined guide so that, at least, one said cell is located above solution level. In drum rotation, casts swing from side to side and, at a time, are shacked. Time of casts stay above alkaline solution is smaller than that in submerged state. Ceramic casts are leached at alkaline solution high temperature, bubbling and ultrasonic effects.
EFFECT: complete removal of ceramic cores.
2 cl, 1 dwg
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