1. Increase the diameter of the barrel due to wear. If […]
1. Increase the diameter of the barrel due to wear. If there is a certain layer of nitriding, the inner hole of the barrel can be directly bored, ground to a new diameter, and then the new screw is prepared according to the diameter.
2. The inner diameter of the barrel is machined and trimmed to recast the alloy, the thickness is between 1~2mm, and then finished to the size.
3. Under normal circumstances, the homogenization section of the barrel wears faster. This section (take 5~7D length) can be trimmed by the boring, and then a nitriding alloy steel bushing is used. The diameter of the inner hole is referenced to the diameter of the screw. Normally fit the gap and process and prepare.