METHOD TO RESTORE SIZE BODY MOTOR-AXLE BEARINGS OF ELECTRIC LOCOMOTIVES USING ARC SPRAYING Russian patent published in 2016 - IPC C23C26/00 F16C33/12 

FIELD: processes.

SUBSTANCE: invention relates to a method for reducing the size of the housing motor and axial bearing by means of an electric arc spraying. A method of reducing the size of the housing of the motor-axial bearings of electric arc metallization. On the outer surface of said bearing body pre-coated paste composition consisting of a liquid phenol formaldehyde resole resin capable of forming at a temperature above 700°C is not less than 50% by weight of coke of starting material, filled with urea in a weight ratio of the dry phenol formaldehyde resole resin: Urea 50:50 to 10:90, a layer thickness of from 1.0 mm to 5.0 mm, followed by spraying molten arc bronze electrodes jet flow of nitrogen present in the cylinder at a pressure of 2 to 10 atmospheres.

EFFECT: reconstitution body size of said bearing is provided with significant simplification of technology and reduce the time of coating the outer surface of the bearing, while achieving complete elimination of burning of alloying elements and the formation of metal oxides during arc spraying while increasing the surface hardness and wear resistance of the coating by forming nitride by reacting metal comprising the electrode and the surface to be plated with an activated nitrogen.

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