The screw and barrel of the extruder are designed according to the building block principle. Its thread shape, barrel structure, aspect ratio, number of feeding and exhaust positions, screen changing and pelletizing methods, and electrical instrument control mode can be optimized and adjusted according to the material system and process requirements, and the unified consideration of multi-function, multi-purpose and specific speciality is implemented, with the characteristics of high productivity and low specific energy consumption.
Scope of application: blending modification (rubber blending, plastic alloy), homogeneity, plasticization, filling modification, granulation. Engineering polymer and glass fiber (carbon fiber) reinforcement. Masterbatch, functional masterbatch.
Masterbatch. Special materials, powder coatings, oil pipeline coating materials. Reaction extrusion. Various cable materials. Exhaust and devolatilization post-treatment.
Daily maintenance of twin-screw extruder:
1. The twin-screw extruder should be inspected once after using it for a period of time to check the tightness of all screws.
2. If there is a power outage during production, the main drive and heating will stop. When the power supply is restored, the barrel sections must be reheated to the specified temperature and kept warm for a period of time before the extruder can be started.
3. After the first 1500 hours of use of the new extruder, there will be impurities in the reducer, so the gears should be cleaned and the reducer lubricating oil should be replaced.
4. If the full degree of the steering of the instrument and the pointer is found, check whether the contact of the thermocouple and other side lines is good.
5. No debris is allowed in the material, and hard objects such as metal and sand are strictly prohibited from entering the hopper and extruder.
6. When opening the barrel cover or the exhaust cover, prevent foreign objects from falling into the main machine.
7. There must be enough preheating time, and the manual turning should be brisk before starting. Generally, the temperature should be kept constant for ~1 hour after reaching the process setting temperature.
8. The screw is only allowed to start at low speed, and the idling time shall not exceed 3 minutes.