| 摘要 |
FIELD: powder metallurgy, namely pressing of powder materials at presence of liquid. ^ SUBSTANCE: method comprises steps of placing powder in press-mold including die, pressing and lower punches; at side of pressing punch introducing to powder volatile liquid in quantity consisting of 0.2 - 3 volumes of pore volume of pressed piece before and during pressing till termination of process; simultaneously with liquid introduction, performing evacuation at side of pressing punch. Method allows press non-plastic powders without plasticizing agents, simultaneously perform pressing and partial removal of plasticizing agent and impregnation. Press-mold includes die, upper and lower punches, device for supplying liquid, evacuation device arranged at side of lower punch. ^ EFFECT: possibility for extruding non-plastic powders. ^ 7 cl, 3 dwg, 11 ex |
