FIELD: metallurgy.
SUBSTANCE: invention can be used at manufacturing of antifriction bushings. It is prepared charge containing, wt %: tin powder 9.5-10; leady powder 0.5-1.0; graphite 0.3-0.5; powder copper electrolytic - the rest. Charge is pressed and sintered by means of sequential increasing of temperature up to 600°±5C with isolation during 1.5 hours, following increasing of temperature up to 660°C±5°C with isolation during 1.5 hours and cooling on air, by means of blow-off in flow of dissociated ammonia. After sintering it is implemented calibration at specific pressure, equal to compacting pressure, with following iterative sintering by means of following increasing of temperature up to 860°C±5°C with isolation during 1.5 hours and following cooling on air.
EFFECT: increasing of antifriction properties, increasing of wear resistance.
2 cl, 1 dwg
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