Bimetallic Twin Screw

Our Bimetallic Twin Screw & Barrel system represents a leap forward in durability for processing highly abrasive and corrosive materials. By integrating an ultra-hard alloy lining into a tough steel base, this solution dramatically extends service life, reducing downtime and total cost of ownership in the most challenging production environments.

This system is engineered to solve the primary challenge of wear in extrusion. The barrel is centrifugally cast with a thick, uniform layer of a wear and corrosion-resistant bimetallic alloy (such as those based on cobalt or nickel), which is then fused to a high-strength outer steel shell. The matching screws are often surfaced with complementary hardened alloys or coatings.

This bimetallic technology creates a working surface with exceptional resistance to abrasive fillers like calcium carbonate, glass fiber, and titanium dioxide. It also provides superior defense against chloride-induced corrosion from certain PVC formulations or other halogens. The result is a dramatic extension of component life-often by multiples compared to standard nitrided steel-while maintaining stable processing performance over time. This solution is crucial for maintaining product dimensional consistency and quality in applications where wear would otherwise lead to rapid performance degradation and frequent production stops.

This system is engineered for the most demanding and abrasive processing environments. It is the ideal choice for handling high-filler compounds (e.g., with calcium carbonate, glass fiber, or mineral fillers), flame-retardant materials, and engineering plastics. Key applications include high-quality masterbatch production, recycling of filled or reinforced materials, and processing of corrosive PVC formulations. It is indispensable in industries where extreme wear resistance is critical to maintaining productivity and product consistency.