quality Twin Screw Extruder Parts & Extruder Screws And Barrels manufacturer

In ZSK co-rotating twin screw extruders, bimetallic barrels are one of the most critical wear parts. Choosing the right barrel improves dispersion, shear performance, and overall extrusion efficiency, while significantly extending service life. 1. Identify Your Application Material type defines the barrel lining material: Plastic compounding / masterbatch: Cr26 or WR13 linings for high filler wear resistance. Biodegradable materials (PLA, PBAT, PBS): Nickel-based or SAM26 for anti-acid corrosion. Food or medical grade: 316L or pollution-free linings to meet safety regulations. Engineering plastics: Heat- and corrosion-resistant bimetallic barrels are ideal. 2. Confirm Key Specifications Center Distance: ZSK typically uses 58.5 mm; precision match is essential. Barrel Type: Closed, venting, side feeder, or combi-barrel must suit process needs. With or Without Liner: Most ZSK barrels use liners to enhance durability. 3. Recommended Material Selection Application Type Recommended Lining Key Features High-wear filler Cr26, WR13 High hardness, abrasion resistant Corrosive materials SAM26, Nickel alloy, 316L Acid-resistant, durable General engineering plastics Cr12MoV, 38CrMoAla Good heat treatment, impact resistance Food-grade extrusion 316L, lead-free alloy Safe, FDA compliant     4. FAQ Q1: Can it replace original ZSK barrels? A: Yes. With matching center distance and hole diameter, it can fully replace ZSK70, ZSK92, etc. Q2: What’s the typical service life? A: Depending on material, up to 1–2 years for high-wear-resistant barrels. Q3: Are screw elements also available? A: Yes, ZHITIAN offers full spare parts including screws, shafts, and gearboxes for ZSK machines.

Laser Cladding Technology Upgrades Twin Screw Extruder Barrels: Stronger Performance, Lower Cost As the polymer processing industry continues to demand higher durability and efficiency from extrusion equipment, laser cladding technology is emerging as a key solution in the manufacturing of twin screw extruder barrels. Compared to traditional nitrided steel barrels and monolithic alloy liners, laser-cladded inner barrel surfaces offer superior wear and corrosion resistance, while also delivering greater structural stability and improved thermal control. Advantage 1: A Superior Alternative to Nitrided Steel Barrels Traditional nitrided barrels typically form only a thin nitrided layer of about 0.5 mm, which may be partially removed during post-nitriding grinding, compromising the surface hardness and shortening the product lifespan. In contrast, laser cladding allows for the formation of a 1–2 mm thick nickel-based tungsten carbide alloy layer directly on the inner wall of the barrel. This significantly enhances wear resistance and service life, making it an ideal replacement for nitrided steel barrels under high-load and high-shear operating conditions. Advantage 2: Replaces Large Monolithic Alloy Liners with Greater Flexibility Conventional monolithic alloy liners are usually produced via vacuum sintering or hot isostatic pressing (HIP), both of which are limited by furnace size, complex in process, and high in cost. Laser cladding technology, however, is not constrained by component dimensions. It enables the direct application of a wear-resistant layer on the inner wall of the barrel, reducing manufacturing difficulty and cost while maintaining high performance. Advantage 3: Improved Structural Stability Through Metallurgical Bonding One of the major drawbacks of alloy liners is the potential mismatch in thermal expansion between the liner and the barrel body, which can lead to gaps or instability during high-temperature operation. Laser cladding forms a metallurgically bonded alloy layer directly on the barrel wall, eliminating the issue of thermal mismatch and ensuring stable long-term performance in demanding extrusion environments. Advantage 4: Thinner Layer Enables Better Thermal Control In a conventional 75mm extruder, the thickness of the alloy liner can reach up to 90 mm, which increases the distance between the material flow and the cooling channels. With laser cladding layers only 1–2 mm thick, the melt remains closer to the barrel’s cooling system, enabling faster heat dissipation and more accurate temperature control. This is particularly beneficial when processing temperature-sensitive materials, improving both product consistency and energy efficiency. Applications and Market Potential Laser-cladded barrels are now widely used in plastic modification, engineering plastics, masterbatch production, and biodegradable material processing. Thanks to their excellent cost-performance ratio, they are becoming the preferred solution to replace traditional nitrided barrels and heavy alloy sleeves. For manufacturers seeking higher productivity and reduced maintenance costs, laser cladding represents a powerful and practical technological upgrade.

As global demand grows for higher performance and greater efficiency in polymer processing and compounding industries, the need for advanced twin screw extruder parts has never been more critical. Zhitian, founded in 2006, is a trusted manufacturer specializing in high-end twin screw extruder parts, including gearboxes, barrels, and custom alloy solutions. With two production facilities in Nanjing and Anhui, Zhitian serves customers worldwide with precision-engineered components and cost-effective material innovations. Why Choose Zhitian as Your Twin Screw Extruder Parts Supplier? Zhitian not only manufactures precision components for twin screw extruders but also develops tailor-made alloy technologies to address the toughest operational challenges. Here's how we solve the most pressing problems in the extrusion industry: 1. Problem: Extreme Wear and Corrosion in Harsh Operating Conditions In complex working environments where abrasion and chemical attack are severe, traditional materials like tool steel or nitrided alloys often fall short. Zhitian's Solution:Our ZT818 cobalt-based tungsten carbide alloy liner was developed through cold isostatic pressing (CIP) technology. Laboratory tests have shown that its wear resistance is over 20 times higher than HSS 6542. This alloy provides a reliable and balanced performance in wear resistance, corrosion resistance, and structural strength, making it ideal for extreme-duty barrel applications. 2. Problem: High-Performance Alloys Are Too Expensive for Large Extrusion Systems While powder metallurgy materials offer excellent performance, their cost can be prohibitive, especially for large twin screw systems (Φ65mm and above). Zhitian's Solution:We offer a cost-efficient alternative by applying a 1–2 mm thick nickel-based tungsten carbide alloy layer through laser cladding on the barrel inner surface. This method not only improves wear and corrosion resistance, but also reduces machining time and overall material cost. The metallurgical bond ensures long-term stability, and the larger the machine size, the more obvious the cost advantage. 3. Problem: Rising Energy Costs and Demand for Higher Output Efficiency Energy consumption and floor space are major concerns in modern extrusion plants. Zhitian's Solution:Our ZT-E series twin screw extruder gearboxes are engineered with a torque density of 18 Nm/cm³, significantly boosting single-machine output capacity. This allows producers to maintain or increase production using fewer machines, smaller motors, and less energy, while also reducing footprint and maintenance costs. It’s a smart choice for sustainable and cost-effective production. Trusted by Global Extrusion Brands Zhitian’s screw elements, barrels, shafts, and gearboxes are compatible with major brands, including Coperion (ZSK/STS/CTE), Leistritz (ZSE-MICRO), JSW (TEX), Maris (TM-W), USEON (TDS), and more. We support both OEM specifications and fully customized production based on your drawings or samples. Contact Zhitian Today Whether you're upgrading existing lines or designing a new extrusion system, Zhitian delivers the high-performance parts and material technologies you need to stay competitive. Our experience, innovation, and dedication to precision manufacturing make us your ideal twin screw extruder parts partner.