Four-Head Kneading Block Extrusion Screw Elements For High-Shear Mixing Zone

Product Description:

The Four-head kneading block extrusion screw elements are precision-engineered components designed for use in co-rotating twin screw extruders, particularly within the melting and mixing zones. These elements play a crucial role in dispersive and distributive mixing, ensuring optimal material plasticization, homogenization, and shear performance throughout the compounding process.

With their distinct four-lobe geometry, the kneading blocks are specifically designed to generate intensive shear forces and enhance axial mixing efficiency. This geometry is especially effective in processing engineering plastics, color masterbatches, flame-retardant compounds, and high filler-content materials such as talc, calcium carbonate, or glass fiber-reinforced polymers. Whether you're working with highly viscous materials or complex multi-component formulas, these elements ensure consistent and controlled mixing performance.

Each kneading block is manufactured using high-speed tool steel (such as W6Mo5Cr4V2) or advanced HIP alloy, depending on the application's wear and corrosion resistance requirements. Every element undergoes CNC precision machining for tight dimensional tolerances, followed by vacuum heat treatment to achieve optimal hardness (typically HRC 58–65), internal strength, and thermal stability under continuous high-load operation.

To meet the demands of various processing tasks and extruder brands, we offer customizable kneading angles (30°, 45°, 60°) to balance shear intensity and residence time, as well as flexible spline types and mounting dimensions compatible with systems from Coperion, Leistritz, JSW, Feddem, and more.

These four-head kneading elements are an ideal choice for manufacturers seeking higher throughput, better dispersion quality, and extended service life, with proven performance in applications ranging from masterbatch production to high-performance polymer blends.

Features:

• Product Name: Extruder Screw Elements
• Hardness: HRC 58–65
• Wear Resistance Grade: High Wear-resistant / Standard / Enhanced HIP
• Outer Diameter (OD): 15.6 Mm – 320 Mm
• Application Area: Twin Screw Extruder For Plastic Compounding, Color Masterbatch, Recycling
• Tooth Profile: 30° / 45° / 60° Kneading Angle (customized Available)

Technical Parameters:

Applications:

Zhitian Extruder Screw Elements (Model Number: 20-320) are versatile components designed for various applications across different industries. These screw segments are manufactured in China, ensuring high quality and reliability. With ISO:9001 certification, customers can trust in the product's performance and durability.

The Extruder Screw Elements are suitable for a wide range of scenarios due to their flexibility and adaptability. Whether it's conveying, kneading, mixing, or reverse applications, these elements excel in diverse processing tasks. The tooth profile options, including 30°, 45°, and 60° kneading angles, can be customized to meet specific requirements.

These screw elements are strategically designed for different zone positions such as feeding, melting, mixing, metering, and venting. This ensures efficient material processing and optimal performance throughout the extrusion process. The high wear-resistant grade of the elements enhances their longevity and minimizes maintenance needs.

Customers can order the Zhitian Extruder Screw Elements with a minimum quantity of 1, making them accessible for various production scales. The pricing is competitive, with timely quotations provided to meet budget requirements. The packaging details in wooden cases guarantee safe transportation and storage of the screw elements.

With a delivery time ranging from 5 to 60 days, customers can rely on prompt supply to support their production schedules. The Outer Diameter (OD) options from 15.6mm to 320mm cater to different extruder sizes and configurations, offering versatility in usage.

Customization:

Product Customization Services for Extruder Screw Elements:

Brand Name: Zhitian

Model Number: 20-320

Place Of Origin: China

Certification: Iso:9001

Minimum Order Quantity: 1

Price: Timely Quotation

Packaging Details: Wooden Case

Delivery Time: 5-60

Application Area: Twin Screw Extruder For Plastic Compounding, Color Masterbatch, Recycling

Processing Technology: CNC Precision Machining + Vacuum Heat Treatment

Tooth Profile: 30° / 45° / 60° Kneading Angle (customized Available)

Compatibility Brand: Coperion / Leistritz / KraussMaffei / JSW / Custom

Material: W6Mo5Cr4V2 / 38CrMoAl / HIP Alloy / Stainless Steel

Support and Services:

Our dedicated technical support team is here to assist with any questions or challenges related to extruder screw elements. Whether you need help fine-tuning performance or diagnosing operational issues, our experienced engineers are ready to provide timely, expert guidance.

Beyond basic support, we also offer a comprehensive range of value-added services, including routine maintenance, component inspection, repair solutions, and performance upgrades. These services are designed to maximize efficiency, extend service life, and help you get the most out of your extrusion equipment.

Packing and Shipping:

Product: Extruder Screw Elements
Description: Precision-engineered screw elements for twin screw extrusion systems

Packaging:
Each screw element is individually wrapped with anti-corrosion film and cushioned using foam or impact-resistant materials, then placed in a sturdy wooden box or customized export-grade carton to prevent damage during transit.

Shipping:
We guarantee secure and professional packaging to ensure your order arrives in excellent condition. Standard orders are typically dispatched within 1–2 business days. International shipping and express options are available upon request.

FAQ:

Q: What is the brand of the Extruder Screw Elements?
A: The product is manufactured under the Zhitian brand, known for precision engineering in extrusion components.

Q: What is the model range of this product?
A: Models are available from 20 to 320, covering a wide range of extruder sizes and applications.

Q: Where are these screw elements produced?
A: All products are manufactured in China, in our advanced production facility equipped with CNC and heat treatment systems.

Q: Do the products have any certifications?
A: Yes, they are certified under ISO 9001, ensuring consistent quality and production standards.

Q: What is the minimum order quantity (MOQ)?
A: The MOQ is 1 piece, allowing flexibility for trial orders, replacements, or small-batch customization.