injection molding machine screw is a core component of plastic processing equipment, responsible for conveying, melting, mixing, and homogenizing plastic materials during the injection molding process. It rotates inside the barrel, applying shear heat and pressure to convert solid pellets into a uniform melt. The screw design, including compression ratio, length to diameter ratio, and flight geometry, directly affects plasticizing efficiency, product quality, and production stability. High quality screws are typically made of nitrided or bimetallic alloy steel to ensure wear resistance, corrosion resistance, and long service life. They are used in automotive and packaging industries.
