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The estimation of the main cause of failures of tower cranes and characteristic defects in the details of the support-rotating wheel (SRW) is given. The analysis results of the existing methods for the performance extending of the SRW elements are adduced. A technology for a high-performance method of repairing the SRW by automatic surfacing with the deposition of layers with a gradient structure is proposed and metallographic studies of the deposited metal were carried out.

welding international

Research and development of a method for repairing of the turntable circle parts for building tower cranes by automatic deposition of the gradient structure layers