Methods for protecting screws and barrel screws

Corrosive, abrasive, and high-temperature resistant resins may inadvertently damage screws and barrel screws. For example, some engineering materials, thermoplastic elastomers, and biopolymer materials can sometimes create a corrosive environment. In addition, reinforcing materials (such as glass fibers, glass balls, etc.), certain fillers, and additives all have abrasive properties.

To avoid affecting production efficiency and product quality, processors must closely monitor the potential hazards that these materials may pose to equipment. It is necessary to establish a preventive maintenance plan (hereinafter referred to as the “PM” plan) in order to maintain high processing standards. When necessary, the screw and barrel should be inspected and measured, and the screw should be pulled out for reinstallation or replacement, as even minimal wear can affect product quality.

The best way to protect equipment from corrosive and abrasive resins is to choose suitable materials to manufacture screws and barrels. To cope with corrosive, wear-resistant, and high-temperature resistant melts, the manufacturing cost of wear-resistant machine barrels and screws exceeds that of standard polyolefin screws by about 3-4 times. This is because wear-resistant alloys are relatively expensive and difficult to process. But they can provide a longer service life and the maintenance interval can be longer.