The abrasion of the barrel of the plastic extruder is specifically manifested in the abrasion of the extruder, which will increase the diameter of the barrel. The inner surface of the barrel is harder than the screw, so the barrel will be damaged after the screw is screwed in. Next, I will introduce the maintenance methods and precautions of the plastic extruder barrel.
1. If there is a nitride layer that increases the diameter of the lens barrel due to wear, please drill and grind the lens barrel hole directly to obtain a new diameter, and prepare new screws according to the new diameter.
2. After mechanical processing, trim the inner diameter of the plastic extruder barrel and make an alloy again to control the thickness to 1-2mm and reach the required new size.
3. Under normal conditions, the homogeneous part of the barrel will wear faster than other positions. The homogenization section can be drilled and trimmed using nitrided surface steel bushings. Processing and preparation.
4. Pay attention to the materials used to make the screw and barrel of the plastic extruder
The special point to remember is that the screw barrel of the extruder is two important parts, one has a relatively small and long hole, and the other has a slender screw. Ensure accuracy. Therefore, it is not the best choice to repair and restore the wear and tear of the screw and barrel. You can replace it with a new one. Repair or replace? A comprehensive analysis should be carried out from an economic perspective. Repair costs are considered lower than the cost of replacing screws. This is not always the right choice, but just one aspect of evaluating whether to repair. It is also important to check the repair cost, update cost and the ratio of the screw update time to the screw time after repair. The lower the ratio, the more economical.
