shreejicorp

  In the demanding world of plastic processing, extrusion, and injection molding, the screw is the heart of the machine. The immense friction, pressure, and high temperatures involved, especially when processing abrasive materials like glass-filled polymers or corrosive compounds such as PVC, lead to rapid wear in conventional screws. This wear widens the gap between the screw and barrel, causing material backflow, inconsistent melting, and a drastic drop in machine output. This is where the expertise of a premier Bimetallic Screw Manufacturer becomes essential, transforming operational longevity and efficiency. The Bimetallic Advantage: Superior Metallurgy and Design The term 'bimetallic' refers to a composite structure where a high-performance alloy layer is metallurgically bonded to a robust steel core. Unlike standard nitrided screws, which only achieve a thin surface hardening, bimetallic screws feature a thick, uniform layer (typically 1 to 2 mm) of an extremely hard and...

In the highly demanding world of plastic processing, the heart of any injection molding or extrusion machine is the screw and barrel system. This critical component must withstand extreme conditions—high temperatures, intense pressure, and constant abrasive and corrosive contact with polymer raw materials. To ensure longevity and optimal performance, leading nitrided screw manufacturers have perfected a meticulous process that transforms high-grade steel into components of superior strength. This journey from raw material selection to the final hardening process is what sets industry leaders apart. Selecting the Foundation: High-Quality Raw Materials The pursuit of perfection begins with the raw material . A top-tier nitrided screw manufacturer never compromises on the base alloy. The material of choice is typically a specialized nitriding steel, such as EN41B (also known as 34CrAlNi7), which contains specific alloying elements like chromium and aluminum. These elements are crucial ...