MOULD FOR MAKING PELLETS FROM POWDERS Russian patent published in 2014 - IPC B22F3/02 B22F3/03 B30B15/02 

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, particularly, to equipment for compaction of powders. It can be used for making the pellets from fine powders to be added to metal melts as allying additive. This mould comprises upper bed 2 with top male die 4, lower bed 1 with bottom male die 3. Lower bed accommodates opposed side male dies 5, 6 to displace towards each other. Note here that every pair displaces in its plane. Male die cavity is composed by top plate 10, bottom plate 9 and four side plates 12, 13, each stating in contact with working surface of one of male dies to reciprocate towards the center of male die coupled therewith and to displace in the plane perpendicular to male displacement owing to displacement of side plates adjacent therewith.

EFFECT: higher quality of pellets.

8 dwg, 2 tbl, 1 ex