METHOD OF REPAIR OF CRANKSHAFT JOURNALS Russian patent published in 1997 - IPC

FIELD: mechanical engineering; repair of parts. SUBSTANCE: main ring strip cover with paste solder is placed on worn out surface of crankshaft journal and fixed by resistance spot pulsed welding. Then at least one additional cover strip with paste solder on its inner surface is placed on outer surface of main cover strip. Additional cover strips are also fixed by resistance spot pulsed welding. Thickness of each cover strip is equal, minimum, to depth of thermal treatment zone at soldering. Summary thickness of main and additional cover strips is selected to provide nominal diameter of worn out journal. Prior to fitting each strip, outer surface of preceding cover strip is machined mechanically. Width of strips is limited by distance between crankshaft journal fillets. EFFECT: improved quality of repaired surfaces. 3 cl, 6 dwg