| 摘要 |
1. An antifriction material in the form of sintered iron powder, graphite and copper with localized inclusions of granules, comprising copper and graphite, characterized in that further comprises ferrophosphorus, phosphorus content is 25-65%, with the following component ratio, wt %: Ferrophosphorus 0.5-5.4, Iron 10.91-26.25, Graphite 0.16-5.16,anules 2.0-24.0, Copper remaining. wherein the gnules 0.4-1.6 mm in size comprise the following component ratio, wt %: Copper 37.0-60.0, Graphite maining. 2. A method for preparing an antifriction material, comprising producing of granules by granulating a first mixture of powders, comprising graphite and copper mixture, mixing granules with a second powder mixture, comprising iron, graphite and copper mixture, forming and sintering of the obtained charge, characterized in that the first powder mixture, comprising wt %: Copper powder 37.0-0.0, Graphite powder remaining. is granulated to roduce granules 0.4-1.6 mm in size, which further contains ferrophosphorus containing 25-65% of phosphorus with the following component ratio, wt %: Ferrophosphorus 0.5-5.4, Iron 10.91-26.25, Graphi 0.16-5.16, Granules 2.0-24.0, Copper remaining. The method according to claim 2, characterized in that the first powder mixture is granulated by passing through calibrated rolling mill rollers. 4. The method according to one of claims 2-3, characterized in that the charge is formed by rolling dosed portions through the rolling mill rollers. 5. The method according to one of claims 2-4, characterized in that the charge is sintered at 900-1020 degree C in a protecting gas medium. 6. A friction unit element, comprising a bearing member with a sintered layer of antifriction material thereon comprised of sintered iron, graphite and copper powders with localized inclusions of granules, comprising copper and graphite, characterized in that further comprises ferrophosphorus, phosphorus content is 25-65%, with the following component ratio, wt %: Ferrophosphorus 0.5-5.4, Iron 10.91-26.25, Gphite 0.16-5.16, Granules 2.0-24.0, Copper remang. wherein the granules 0.4-1.6 mm in size comprise the following component ratio, wt %: Copper 370-60.0, Graphite remaining. 7. The friction unit lement according to claim 6, characterized in that the bearing member is made of a low-carbon steel. 8. The friction unit element according to claim 7, characterized in that the bearing member is 1-250 mm thick. 9. The friction unit element according to one of claims 6-8, characterized in that the layer of the antifriction material is 0.7-15 mm thick.
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