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Three-screw extruder: how to analyze the fault? These aspects show the difference!

by:TENGDA     2023-06-30
When we use the three-screw extruder, we will inevitably encounter some failures in the machine. If the machine fails, then we must learn to deal with these failures, so how to analyze these failures? It is mainly analyzed and solved through three aspects: abnormal screw operation, vent hole material, and the main engine will not rotate or stop instantly. In addition, in the article, TENGDA Plastic Extruder Machine Manufacturers also introduced the differences of three-screw extruders, so hurry up and find out in the article!

Common fault analysis of three-screw extruder:

1. The screw does not run normally

Reason: The feeding of the hopper is discontinuous; the feeding port is blocked or bridged by foreign matter; hard metal objects fall into the spiral groove, blocking the spiral groove, and cannot feed normally.

Treatment method: increase the feeding speed of the three-screw extruder to keep the feeding stable; remove the foreign matter at the feeding port to eliminate bridging phenomenon; if it is confirmed that the metal foreign matter falls into the spiral groove, immediately stop the machine and disassemble the screw to remove the metal foreign matter .

2. Vent material

Reason: There are a lot of impurities in the raw material, the feeding speed of the three-screw extruder is too fast, and the screw extrusion is unstable. Because the screw extrusion is unstable, the plasticizing temperature is not enough.

Treatment method: clean the raw material or replace the filter screen before feeding; reduce the feeding speed to make the plasticized stable screw extrude smoothly; increase the plasticizing temperature of the three-screw extruder.

3. The main engine will not rotate or stop instantly

Reason: The power supply of the main motor of the three-screw extruder is not connected; the heating time is insufficient, or one of the heaters does not work, resulting in excessive torque and overload of the motor.

Treatment method: Check whether the host circuit of the three-screw extruder is connected, check the temperature display of each section, confirm the warm-up time of the machine, and check whether each heater is damaged or in poor contact.

What are the differences between three-screw extruders?

1. There are differences in the quality of three-screw extruders. There are many three-screw extruders on the market, with many varieties and brands. There are also differences in price, and it is impossible for you to find a product with the same price. Due to some elements of the three-screw extruder, the price of the three-screw extruder will vary.

2. The quality stability and service life of the three-screw extruder are different. The service life of the three-screw extruder is between 2 and 3 years, and the wear life is generally only about 6 months. Regular three-screw extruder wholesale manufacturers have after-sales service.

To sum up, the above is the relevant knowledge about three-screw extruder introduced by TENGDA Plastic Extruder Machine Manufacturers. If you want to know more, you can consult TENGDA Plastic Extruder Machine Manufacturers at any time!
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