METHOD OF ANTIFRICTION WORKING OF FRICTION SURFACES Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: friction surfaces are worked by hones whose hardness is 3 to 5 times lower than that of the worked surface. The working process continues until a profile consisting of flat sections with a low height of microirregularities, forming the bearing surface, and deep notches are obtained on the surface. The relative bearing surface at the level of profile section p₁ from the line of the maximum projection should make up 50 to 75% and that at the level of profile section p₂ from the line of the maximum projection 10 to 30% with the maximum width of the notches at level p₁, not exceeding 100μk. The pressure of hone clamping to the worked surface makes up 2-6 kg/cm². The hones have the following composition, mass percent: copper - 40.0 to 75.0; low-melting-point metal 2.0 to 17.0; antifriction material 2.0 to 10.0; finely divided abrasive material 10. to 40.0; stiffener 2.0 to 10.0. EFFECT: facilitated procedure. 2 cl, 1 tbl