Bimetallic Screw Barrel

A Bimetallic Screw Barrel for injection moulding machines features a primary steel barrel with a specialized, corrosion- or abrasion-resistant alloy lining (the "bi-metal" layer) applied to the internal surface, drastically enhancing the life and performance of the component, while the corresponding screw, often constructed from hardened tool steel and sometimes coated, works within this tough environment to melt, compress, and homogenize various demanding engineering polymers, ultimately leading to superior melt quality and durability compared to standard nitrided components.