A method for restoring gearbox and traction motor parts of the 2ES10 electric locomotive has been developed and patented in Russia. The technology was patented by engineers Andrey Pigasov and Alexander Krasnykh: it is designed to repair areas of intensive wear that occur during operation.
The method includes two options – powder spraying and electric arc surfacing. In the first case, the part is cleaned, then a sublayer and a main layer of powder alloy are applied with an interval of 30–40 minutes. An oscillator with an amplitude of 3 mm/rev is used for uniform application, and the part itself is heated to 100 °C. During the process, the temperature is monitored with a pyrometer to ensure it does not exceed 200 °C.
The second option involves electric arc surfacing. The part is cleaned, a protective mastic is applied, and metal is layered with wire at a current of 80 A. After each pass, a pause of 5–10 minutes is made, and the temperature is maintained at 150 °C.
In both cases, the part is cooled naturally, then the surface is cleaned, washed with water at a temperature of at least 80 °C, and dried with compressed air. The technology allows worn parts to be restored to their original operational dimensions, which eliminates the need for their complete replacement. The development can be used in the repair of locomotives and other machines with highly loaded components.
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