SynRM-application advantages in the rubber and plastics industry

What is plastic extruders ?

Plastic extruders are key equipment in profile extrusion production lines (such as the production of plastic steel doors and windows) and aluminum-plastic composite pipeline production lines. The extruder is divided into three zones from the feeding end to the machine head: the feeding zone, the melting zone and the homogenizing zone. In the feeding area, the solid plastic is transported back to front through friction with the barrel and gradually compacted. In the melting area, the solid plastic is heated and melted, forming a melt film on the liquid-solid interface. The thickness of the melt film exceeds In the gap between the screw fin and the barrel, the melt is scraped off by the screw fin, forming a molten pool in front of the screw fin, and a solid molten bed on the rear side. In the homogenization zone, the material is subjected to forward flow, side flow, and side flow as the screw advances. The four motions of mixing, shearing and compaction are used to fully mix and plasticize, and continuously pass through the die under a certain pressure to form a continuum.

Synchronous reluctance motors system have outstanding advantages in plastic extruders:

Advantage of Synchronous Reluctance Motor 1: 

IEC national standard installation size, easy to replace the original asynchronous motor, and can reduce the frame size by 1~2

IE5 series: installation dimensions are consistent with asynchronous motors IE3 series: reduce the base size by 1~2, reduce the installation space, and make installation more convenient

Advantage of Synchronous Reluctance Motor 2:

Large torque at low speed (constant torque across the entire speed range)

With a wider efficient range and high overall operating efficiency

Advantage of Synchronous Reluctance Motor 3: 

Wide efficiency range, energy efficiency reaches IE5

60 rpm full load operation

1.5 times torque starting (open loop)

Advantage of Synchronous Reluctance Motor 4: 

The rotor has no slip, high speed accuracy, and a fast dynamic response.

50Hz sudden loading and unloading full load speed recovery time is less than 0.5 seconds (open loop)

Synchronous reluctance motor system energy-saving application cases in the rubber and plastics industry

• cone twin-screw extruder (pipeline industry)

• Single screw extruder (cable industry)

• Single screw extruder

• Flat twin extruder (sheet industry)

• Flat twin extruder (pelleting industry)

• Single screw extruder (blown film industry)

• Open mill

• Internal mixer

FAQ：

Q: Which well-known supporting customers in the industry are using your motors? How many units are shared? How long did it take?

A: In the rubber, plastic, and fluid industries, many well-known companies are using our motors in batches.

Q: This is a new type of motor. Are there any defects?

A: The permanent magnet-assisted synchronous reluctance motor has two main drawbacks. Because it is a controlled motor, it must be equipped with a driver to operate. Secondly, because it uses ferrite materials, there is a risk of demagnetization in extremely cold temperatures of minus 40°C.

Q: Which is more energy-saving, reluctance motor or IE5 traditional motor?

A: It depends on the working conditions. If working at the rated operating point, both motors have IE5 energy efficiency and the same efficiency. If there are other operating points, the reluctance motor is more energy efficient. The performance is different under different working conditions. Our energy-saving engineers can evaluate energy-saving performance based on the working condition survey form you fill out.