What are the causes of stator wear in screw pumps?
1. Wet abrasive wear
Wet abrasive wear is a condition of particle wear, and there is another condition called dry abrasive wear. The two are distinguished as follows: wet abrasive wear is the presence of liquid media between the abrasive particles and rubber, while dry abrasive wear is no liquid media between the abrasive particles and rubber. Because of the working environment of the screw pump, the main cause of the screw pump particles wear is wet abrasive wear.
2. Fatigue wear
Fatigue wear is generated under the condition that the friction and contact stress between the stator rubber and the rotor's rounded and blunt counterpart surface are not too large. This wear is similar to abrasive wear in many ways, and some scholars regard fatigue wear as a form of abrasive wear, i.e., rounded and blunt abrasive wear. However, fatigue wear is a low-intensity wear compared to abrasive wear.
3. erosion wear
Erosion wear, also known as erosion wear, this wear occurs due to the liquid flow between the rotor and stator of the screw pump, this wear in the normal operation of the screw pump is one of the main forms of wear.
4. Frictional wear
This condition occurs only under conditions where the friction factor is high but the tear strength of the rubber is low. This wear occurs when the rubber surface is torn, curled, stretched, and eventually peeled off from the rubber surface, forming a curled rubber debris. If the screw pump dry friction rotor and stator friction heat, so that the rubber temperature increases, reducing the tear strength of rubber, so that the rubber surface resin aging, sticky, so that the friction wear intensifies, the stator quickly damaged, which is why the screw pump can not idle.
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