All four problems of extruder are solved!
All four problems of extruder are solved!
Extruder is the important equipment of plastic molding and granulation and the normal use of extruder can give full play to the efficiency of the machine and maintain a good working condition. It is necessary to maintain diligently and prolong the life of the machine.
The main failure of the extruder is abnormal noise and abnormal vibration caused by normal wear and transmission parts, such as abrasion or damage of transmission parts, etc., and also the death of foreign body card and blocking material.
In order to avoid failure, we need to know these things in addition to strict daily maintenance, maintenance and maintenance.
1. The extrusion screw wear
The wear reason
Screw extruder screw and barrel of the normal wear mainly occurred in the loading area and measurement area, the main wear reason is sliced dry friction between particles and metal surface, when wear after the heat up to soften.
Screw and barrel is not normal wear and tear will be in the screw ring junction and foreign bodies stuck, splice refers to the material of screw is frozen lock, if the screw extruder lack of good protection device, a powerful driving force likely to twist off the screw, stuck will produce unusually large resistance, cause serious damage on the surface of the screw and barrel of the serious scratch, barrel scratch is difficult to repair. Barrel from the design principle, guarantee the service life is longer than the screw, the barrel of the normal wear and tear, generally no longer repair, often use the method of repairing screw thread, restore the barrel inner hole and the screw diameter with radial clearance.
Solution for screw wear
