1. Product Introduction
This is an industrial backbone forged for uninterrupted, high-intensity production. We understand that downtime means loss. Therefore, at every critical component concerning durability, we reject compromise. The heart of the extruder—the screw and barrel—is made of 38CrMoAlA alloy steel and undergoes deep nitriding treatment, achieving a surface hardness as high as HV1000, sufficient to withstand years of wear from PP fillers. The gearbox is integrally cast from HT250 iron and annealed to relieve internal stress; its internal helical gears are hardened and precision ground for smooth, quiet operation. From the robust welded frame to brand-name bearings and seals, every detail reflects our obsession with "reliability," aiming to provide you with decades of stable service.

2. Main Specifications

• Ultra-Wear-Resistant Extrusion Unit: The screw and barrel are nitrided, with a deep and uniform hardness layer, offering a wear life several times that of ordinary carburized treatment. The barrel bore is precision ground with optimized clearance to the screw, balancing plasticizing efficiency and durability.

• High-Rigidity Drive System: Gearbox gears use 20CrMnTi alloy steel, with tooth surfaces high-frequency hardened and precision ground to accuracy grade GB7, ensuring high transmission efficiency, low temperature rise, and long life. Built-in forced lubrication system.

• Sturdy Mechanical Structure: The main frame uses high-quality profiles and steel plates for welding, with reinforced design at key load-bearing points and stress relief treatment to prevent deformation after long-term operation.

• Brand-Name Key Purchased Parts: Bearings, seals, inverters, etc., are selected from renowned domestic and international brands, ensuring operational reliability and maintenance convenience from the source.

3. Technical Parameters Table

4. FQA:

• Q1: How important is the "nitriding treatment" for the screw and barrel? Can ordinary materials be used instead?

  • A1: It is crucial, especially for PP materials that may contain fillers like calcium carbonate. Nitriding is a surface chemical heat treatment that forms an extremely hard (above HV1000) and corrosion-resistant nitride layer on the steel surface. This "armor" effectively resists abrasive wear from the plastic melt, particularly fillers. Ordinary carbon steel or untreated alloy steel may suffer severe wear within months when processing abrasive materials, leading to decreased output, uneven plasticization, and increased energy consumption. Our nitriding treatment depth can reach 0.4-0.6mm, ensuring performance is maintained even after long-term wear.

• Q2: What is the design life of the equipment? What should be noted in daily maintenance?

  • A2: The overall machine design life exceeds 10 years, with core structural components lasting over 15 years. Daily maintenance is key to ensuring longevity: 1) Regular Lubrication: Strictly follow the manual for oiling or changing oil in the gearbox and bearings. 2) Cleaning & Tightening: Regularly clean dust and oil from equipment surfaces; inspect and tighten critical bolts. 3) Electrical Inspection: Periodically check electrical terminals for looseness. 4) Screw Care: Use purge compound to clean the screw and barrel before prolonged shutdowns to prevent corrosion. Our provided maintenance manual will guide you through these tasks in detail.