Tablet press wear repair method

When the bearings of the tablet press are worn, some can be repaired by welding. For example, when the inner and outer rings of the bearing are running, the surfacing welding of the journal and the inner hole of the end cover is stopped by electric welding, and then processed into the required size by a lathe. Preheat the inner hole of the shaft and end cover (150-250°C) before welding. The shaft generally adopts J507Fe welding rod, and the inner hole of the end cover always adopts ordinary cast iron welding rod. Immediately after the welding is completed, it is deeply buried in dry lime powder and cooled slowly to control the rapid cold and brittle phenomenon. Attention when repairing by electric welding turning: ①The concentricity correction value is not greater than 0.015mm, so as to avoid increasing noise and vibration heat during high-speed operation during eccentricity, and shortening the service life of the motor; ②When the motor journal is less than 40mm,