Renovation of the barrel process
Barrel inner surface hardness higher than the screw, it's late damage than the screw. The scrap is the diameter of the cylinder diameter increases due to the wear and tear of time. The repair method is as follows:
1, increase the diameter of the barrel due to wear, if there is nitrided layer, the cylinder bore directly boring, grinding to a new diameter, then press the diameter of the preparation of a new screw.
2, a cylinder inner diameter of trimmed by machining to re-cast alloy, of a thickness of 1 ~ 2mm, and then finished to size.
3, under normal circumstances the barrel of paragraph wear faster, the paragraph (take 5 to 7D long) boring dressing, adding a nitriding steel bushings, inner hole diameter with reference to the diameter of the screw, to stay in normal with the clearance, processing or preparation.
After the repair, machine plasticizing parameter does not need to make any changes to its service life is much higher than conventional material parts of your purchases, creates greater wealth for the rubber and plastics industry.