What are the common failures of the screw of the twin-screw extruder?


When using a twin-screw extruder, we must pay attention […]

When using a twin-screw extruder, we must pay attention to the use status of its accessories. The screw is a very important accessory. If it fails, we must learn to solve these problems.

Common failures of the screw of twin-screw extruder:
1. The screw of the twin-screw extruder is a molding method in the field of polymer processing. It has the advantages of large dosage, large change, high consumption rate, and large output ratio. It has simple control, simple process control, mixing and plasticization. Good capacity, short extruder residence time, fast extrusion speed, low output energy consumption, etc.
2. There are many reasons for the screw slippage of the twin-screw extruder, which may be related to poor materials, excessive back pressure, overheating or overcooling of the cylinder end, wear of the cylinder or screw, shallow threads in the feeding section, unreasonable funnel design, and funnel. , Wet resin clogging, excessive resin smoothness, or unreasonable cutting of resin and recycled materials, etc. are related to other factors.
3. When the screw of the twin-screw extruder comes out, the materials may gather at the feed port and cannot be conveyed to the end of the twin-screw extruder correctly. When the screw rotates and retreats in the cylinder to protect the material and prepare for the next injection, screw slippage occurs in the plasticizing section.

Factors affecting the price of twin screw extruders:
1. Different functions
In recent years, the performance of twin-screw extruders has been comprehensively improved. The achievable production effect is not only stronger, but also more and more achievable functions. With the improvement of functions, the design cost and production consumables required to be imported will be different, which will lead to the same price difference of the twin-screw extruder.
The twin-screw extruder has good quality, good service, and clear product classification, which can ensure the accurate matching of functions and needs, so as to ensure the cost-effective use. Therefore, in the process of exploring the price of a twin-screw extruder, it is necessary to compare it with the usage of the function and the value it can produce.
2. Different brands
The advantages of craftsmanship and brand are largely related to its technical level. Only by mastering more core technologies can the brand go further. In order to create a better process, the cost base is very large, so the prices of twin-screw extruders of different brands are not the same.
The current quotation of twin-screw extruders will be classified by brand, so that the price is more targeted. Therefore, in a certain sense, brand technology will also affect the pricing orientation of twin-screw extruders, but the protection value and significance brought by the brand will be greater.