电弧喷涂技术在重载电机转子轴颈磨损修复中的应用（Application of arc spraying technology in wear repair of rotor journal of heavy duty motor）.doc

电弧喷涂技术在重载电机转子轴颈磨损修复中的应用（Application of arc spraying technology in wear repair of rotor journal of heavy duty motor） Application of arc spraying technology in wear repair of rotor journal of heavy duty motor 2009-3-27 I. Analysis of motor rotor wear condition and operation parameters Equipment management, equipment maintenance, inspection and diagnosis RS5 China equipment management network qUN In the course of operation, the rotor of #7l feed pump motor in Xuzhou power station is seriously damaged and burned due to lack of oil. The traces of wear are local grooves, the surface is burnt, and the maximum wear depth is about 2mm. The motor rotor operation parameters: speed 3000r / min, motor power 3000Kw, rotor weight 3.8T, length 4m, the size of the parts to be repaired on l60+0.02 ~ +0.04, roughness l.6, running and sliding bearing. At present, for shaft wear repair parts are the main methods of welding, brush plating, car small shaft diameter, thermal spray coating repair process, from the reliability, especially for high speed and large and heavy parts, generally preferred welding, brush plating or small car shaft neck repair. Often think the quality of coating coating is not stable, torsion, shear ability is poor, worried and abandoned in the operation process of coating. Equipment management, equipment maintenance, inspection and diagnosis RS5 China equipment management network qUN Two, parts wear commonly used repair process Equipment management, equipment maintenance, inspection and diagnosis RS5 China equipment management network qUN 1. surfacing. The welding parts shall be repaired by welding with special electrodes, and the mating sizes shall be guaranteed by mechanical processing after welding. The combination of surfacing welding and shaft matrix is metallurgical combination with high bonding force. But the welding heat affected zone greatly. For phi 160 axis diameter and 3.8T weight of the rotor, once in the process of the welding deformation of shaft nec