| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to antifriction materials produced in powder metallurgy and implemented in components of friction units of machines, mechanisms, equipment and in current-collecting elements. Antifriction material contains, wt %: ferrophosphorus 0.50-5.40, carbon fibres 0.50-15.00, iron 10.91-26.25, graphite 0.16-5.16, granules 2.00-24.00, copper - the rest. Material is composed as sintered powders with localised inclusions of granules. Granules are of 0.4-2.0 dimensions and contain, wt %: copper 37.0-60.0, graphite - the rest. Material is produced by means of granulating of mixture of copper and graphite powders and successive mixing of granules with powders of ferrophoshorus, copper, graphite, iron and carbon fibres. Produced charge is formed and sintered. There is described a component of a friction unit with a baked layer of produced antifriction material. Produced porous-free antifriction material possesses high mechanical strength and ability to create dividing films on the surface which prevent wear of a contact pair. ^ EFFECT: obtaining material of high density facilitating prevention of wear of contacting pair. ^ 9 cl |
