What is the cause of the wear condition of the screw extruder in the cable equipment?
Release time:
2020-05-13
Abnormal wear of the screw and the barrel will occur when the screw is locked by ring knot and foreign matter. Ring knot means that the screw is locked by condensed material. If the screw extruder lacks a good protection device, the strong driving force may twist the screw. The locking will produce unusually large resistance, causing serious damage to the screw surface and serious scratch to the barrel. The scratch of the barrel is difficult to repair.
The main reasons for the wear of the screw extruder in the cable equipment:
The normal wear of the screw and barrel of the screw extruder mainly occurs in the feeding zone and the metering zone. The main cause of wear is caused by the dry friction between the sliced particles and the metal surface. When the sliced material is heated and softened, the wear decreases.
Abnormal wear of the screw and the barrel will occur when the screw is locked by ring knot and foreign matter. Ring knot means that the screw is locked by condensed material. If the screw extruder lacks a good protection device, the strong driving force may twist the screw, and the locking will produce unusual huge resistance, causing serious damage to the screw surface and serious scratch to the barrel. The scratch of the barrel is difficult to repair. The barrel is designed to ensure that the service life is longer than that of the screw. For the normal wear and tear of the barrel, it is generally no longer repaired. The method of repairing the screw thread is often used to restore the radial clearance between the inner hole L of the barrel and the outer diameter of the screw.
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