Bimetallic screw for extrusion machine

A bimetallic screw is a type of screw used in extrusion machines. It is made up of two different metals, typically steel and a high-wear resistant alloy such as tungsten carbide.

The purpose of using a bimetallic screw in an extrusion machine is to improve the screw's durability and resistance to wear. The high-wear resistant alloy is usually applied to the screw's flight, which is the area that comes into contact with the material being extruded. This helps to prolong the life of the screw and maintain its performance over time.

Bimetallic screws are commonly used in extrusion machines for processing materials that are highly abrasive or corrosive, such as filled polymers, glass-filled materials, or compounds with high mineral content. These materials can cause significant wear on a standard screw, leading to reduced performance and increased downtime for maintenance and replacement.

By using a bimetallic screw, manufacturers can benefit from increased productivity, reduced downtime, and improved overall efficiency of the extrusion process.