METHOD OF MANUFACTURING OF PART OF WEAR-RESISTANT AND ANTIFRICTION COATING Russian patent published in 2015 - IPC B22F7/04 C23C28/02 F16C33/12 

FIELD: machine building.

SUBSTANCE: preliminary a rod is made by pressing and sintering of the composition containing copper powder, PTFE powder and ammonium chloride. To the work surface of the part a composition is applied containing 1…3 wt % of copper chloride in glycerine. Then the rod is put in friction contact with the work surface of the part with sliding speed 0.06…0.09 m/s at longitudinal feed rate 50…80 mcm/rev, pressure 30…50 MPa, and number of passes 4…6. The obtained coating is passivated, then lubricating composition based on soap plastic lubricant comprising copper powder and PTFE powder is applied. At that prior to the lubricating composition application it is preliminary heat treated in inert gas by pressing-through 3…5 times under pressure via the gap between external and internal cages of the heated and installed in series roll bearings.

EFFECT: increased antiwear properties of the coating and antifriction properties upon increased durability of the coating.

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