Motor mandrel surface strengthening layer compound technology

Abstract

The invention provides a motor mandrel surface strengthening layer compound technology which is characterized by comprising the following steps: cleaning oil stains and impurities on the working surface of a motor mandrel; heating the working surface of the motor mandrel to 40-100 DEG C; performing pneumatic conveying on stainless steel powder to the working surface of the motor mandrel; and irradiating the stainless steel powder on the working surface of the motor mandrel by laser to lead the stainless steel powder to be molten and covered on the working surface of the motor mandrel so as toform a stainless steel strengthening layer with the thickness of 1-4mm. The technology in the invention can compound a high wear-resistant and corrosion-resistant strengthening layer on the working surface of the motor mandrel, reduce the rejection rate of spare parts, save the production cost, lead the compounded motor mandrel to have longer service life and more balanced operation performance, prevent the problems of bounce, napped bearing working surface and the like in use resulted from corrosion and abrasion of the working surface of the motor mandrel, and be suitable for processing new motor mandrels and repairing scrapped motor mandrels.

Description

technical field [0001] The invention relates to a compounding process, in particular to a compounding process of a reinforced layer on the surface of a motor mandrel. Background technique [0002] The motor mandrel is the main component of the motor rotor and also the main load-bearing part of the motor. The silicon steel sheet and coil winding as the core part of the motor are fixed on the mandrel, and the silicon steel sheet and coil winding drive the mandrel at a high speed under the action of the electromagnetic field. Rotating, the working surface of the bearings installed at both ends of the mandrel is fixed on the bearing support on the motor housing, therefore, affected by long-term friction and high temperature, the working surface is very easy to be worn and corroded. The diameter of the bearing working surface at both ends of the mandrel becomes smaller after being worn and corroded, and the gap between the bearing and the bearing becomes larger. Radial runout occ...

AI Technical Summary

Problems solved by technology

The working surfaces of the bearings at both ends of the mandrel are worn and corroded, and the diameter becomes smaller, and the gap with the bearings becomes larger. Radial runout occurs during operation, and the whole motor emits a huge noise, which not only affects the working environment, but also reduces the output power, seriously The working surface of the bearing position is roughened, and even the bearing is locked, which makes the motor scrapped

Once the mandrel is worn and corroded to a certain extent, it will be shut down for maintenance, and the mandrel will be scrapped and replaced, which will increase the loss cost in the daily production of the enterprise

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