PROCESS OF RECLAMATION OF HOLES IN PARTS OF CAST IRON Russian patent published in 2001 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention can be employed for reclamation and repair of parts, for prolongation of service life and increased reliability of friction units of " plunger pair " type by way of securing precision of holes in base members of cast iron with deposition of coats showing special physical and mechanical properties. In case of wear-out up to 140 μ process includes arc deposition of copper coats with pulse energy of 0.28-1.66 J, specific deposition time 2.0-3.0 min/sq cm and electrode vibration frequency 150-250 Hz. In case of wear-out up to 140-300 μ layer of steel coat with specific deposition time 2.5-4.0 min/sq cm is deposited prior to deposition of copper layer. EFFECT: prolonged service life and increased reliability of friction units. 2 cl, 3 tbl