The methods of protecting screw and barrel are:

Corrosion, abrasion, and high temperature resistant resin may damage the screw and the barrel.For example, some engineering materials, thermoplastic elastomers and biomolecular materials can sometimes form a corrosive environment.In addition, reinforced materials (such as glass fiber, glass ball, etc.), certain fillers and additives, have abrasion.
To avoid affecting production efficiency and product quality, processors must closely monitor the damage that these materials may cause to the equipment.In order to maintain high processing standards, it is essential to establish a preventive maintenance programme (" PM ").When necessary, the screw and barrel should be checked and measured, and the screw should be pulled out for re-installation or replacement, because minimal wear and tear will also affect the quality of the product.
The best way to protect the equipment from corrosion and abrasion is to choose the right material for the screw and barrel.In order to deal with the corrosive, wear and high temperature melt, the machine can be used to manufacture the cartridge and screw, and the processing cost is about 3 ~ 4 times higher than the standard polyoolefins.This is because the cost of wear - resistant alloys is expensive and difficult to process.But they provide longer service life and can be repaired longer.