Motor ceramic shaftMade of wear-resistantzirconia ceramic< /strong>Made and widely used in all walks of life! So how to repair the motor ceramic bushing after it has been worn for a long time? First treat the surface of the ceramic bushing. In order to ensure a reliable and strong bond between the structural adhesive and the surface of the ceramic bushing, the sludge and rust on the pits on the surface of the ceramic bushing must be completely removed to expose the pure ceramic surface. .
Multi-point measurementCeramic shaft The size is used to determine the ceramic shaft benchmark (even surface wear, no pitting, small diameter changes), which is used as a benchmark size according to the transition. The inner diameter of the ceramic bushing is processed according to requirements. In order for the structural glue to smoothly fill the gap between the sleeve necks, a spiral groove with a pitch of 15mm, a groove width of 3mm, and a depth of 1.5mm is machined within 30mm of the two. ends of the sleeves. Both ends of the spiral groove are processed into annular grooves to form a closed loop. The heat resistance of structural rubber is used to determine interference between ceramic bushings and bearings.
HeatingCeramic bushing, hot-assemble it to the ceramic journal, position and adjust it to ensure that the coaxiality meets the requirements. When the ceramic shaft injection sleeve cools to about 30°C, both ends of the sleeve are sealed with sealing materials to prevent leakage. The middle opening at the bottom of the sleeve (connected to the spiral groove) is equipped with a glue injection hole, and the upper part of the sleeve is equipped with a glue overflow device. Apply a certain amount of pressure to inject the liquid structural glue into the gap between the sleeve and the journal until it overflows, and block the glue holes to prevent glue leakage. Since the ambient temperature during maintenance is relatively low, it has a certain impact on the curing of the structural adhesive. In order to ensure the mechanical properties of the structural adhesive, thermal radiation is used to keep the bushing insulated for more than 8 hours. When processing the outer diameter of the ceramic bushing, please determine the tolerance requirements for the interference fit with the bearing. The heating temperature of thermally loaded rolling bearings should be strictly controlled, the bearings should be heated evenly, and the temperature rises slowly. Measure the bearing surface temperature and the bearing's inner hole size multiple times to ensure that the bearing is installed in place in one go.
