Repair method for dimension recovery of transfer lining of accessory drive gearbox

Abstract

The invention relates to the field of accessory drive gearboxes, in particular to a repair method for dimension recovery of a transfer lining of an accessory drive gearbox. The repair method is characterized in that a part is repaired by adopting a method of spraying a nickel-aluminum coating with plasmas, and the repair method is directly applied to gear box spigot positioning. A thermal spraying process is adopted to spray the nickel-aluminum coating on a worn part of a lower bearing lining, so that relatively large dimension recovery increase is realized on the worn part, and binding force between the coating and a base body is guaranteed. Makeup processing dimensions of the worn part of the lower bearing lining are that phi 55.6mm-phi55.7mm is a radial machine processing dimension, and 11.6mm is axial processing length. The lower bearing lining repaired by the repair method is adopted to completely achieve original matching dimension requirements, so that a working condition that the originally-structured lower bearing lining wears continuously is greatly improved, and the utilization rate of the original lower bearing lining is increased, and therefore, the safety in use is improved, and great hidden danger is avoided and reduced.

Description

technical field [0001] The invention relates to the field of accessory transmission gearboxes, in particular to a repair method for restoring the size of the adapter bushing of the accessory transmission gearbox. The method of repairing parts by plasma spraying nickel-aluminum coating is directly applied to the positioning of the notch of the gearbox body. Background technique [0002] The role of the accessory drive gearbox is to transmit the rotary motion from the main drive shaft to the accessories of the accessory drive system and to fix the accessories. The accessory transmission gearbox is the carrier for installing the engine accessories, the smoothness and reliability of its transmission determines the normal operation of all accessories, [0003] The accessory transmission gearbox is installed on the main transmission shaft transmission casing, and two mounting lugs are installed at both ends of the transmission casing for fixing. Such as Figure 1(a)-Figure 1(b) A...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a repair method for restoring the size of the adapter bushing of the accessory transmission gearbox, to solve the problem of the wear of the lower bushing of the accessory transmission gearbox, to restore its matching value for larger sizes, to make full use of thermal spraying, and to break through the previous titanium Small-scale plating and restoration of complex alloy parts, achieving large size growth in worn parts, and fully ensuring the bonding force between the sprayed coating and the substrate

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