METHOD OF MANUFACTURING CUPRUM-BASED POWDERED MATERIAL Russian patent published in 2012 - IPC C22C1/04 B22F3/12 C22C9/00 

FIELD: metallurgy.

SUBSTANCE: wastes of copper-based powdered compacts preliminary grinded till the size of not less than 5 mm and saturated by kerosene are activated in high-energy mill with the aid of mill balls covered by ferromanganese in quantity of 10 wt % in medium containing 10 wt % of kerosene. The ratio of balls covered by ferromanganese mass and dusty wastes mass is 10:1, activation time 1.75 h. Powder charge is prepared from the mixture of base powders containing 9 wt % of tin, 2.5 wt % of graphite and copper - the rest, and activated additive 4-32 wt % then cold pressing and roasting is carried out with possible further postcompaction.

EFFECT: increase of rupture resistance against radial compression, powder milling intensification.

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