Restoration of deformed ship crankshafts by straightening

The article focuses on studying the crankshaft as an essential part of marine internal combustion engine. Typical defects crankshafts diesel engines are considered. loads causing curvature a axis under operating conditions indicated. causes and nature violation shaft geometry determined. statistical assessment in cases axle warping during operation is found necessary. recommendations Russian Maritime Register Shipping eliminating A long-term practical experience straightening at ship repair plants taken into account. Methods for deflections described. mechanical without heating advantages disadvantages methods clarified. necessary requirements thermomechanical shafts applying thermal method substantiated. High labor intensity instability shape after pointed out. There has been proposed by stress relaxation based creep material. Theoretical foundations processes material inferred necessity further research operational reliability their restoration method.