PRODUCT IMPREGNATION APPARATUS Russian patent published in 1995 - IPC

FIELD: powder metallurgy, in particular, elimination of cast billet defects, production of composite materials. SUBSTANCE: apparatus has working chamber B filled with impregnating composition, blocking-signalling device A, float valve 1 with collet 13. When impregnating composition fills working chamber to the required level, it comes in contact with blocking-signalling device A and float valve 1 lifts to hermetically cut off passage over surface 13 by its collet 12 Filling of working chamber is controlled through viewing window 14 and excessive pressure is controlled by pressure-vacuum gauge 6 through divider 7. Upon termination of impregnation process gas under excessive pressure is supplied into cavity 4, collet 12 is shifted away from surface 13 and impregnating composition is forced through cavities 3,2 and 5 from working chamber B via cavities 11,10,9,8 into discharge system. Collar 16 with tongues enters depression 17 to provide free flow of impregnating composition through channel 8. EFFECT: increased efficiency in elimination of defects in cast billets and enhanced reliability in operation. 1 dwg