TEX77 Conveying Extruder Screw Elements For Petrochemical Co-Rotating Twin Screw Extruder

TEX77 Convey Screw Elements For Petrochemical Co-Rotating Twin Screw Extruder

TEX77 Convey Screw Elements are core modular feeding segments exclusively matched with 77mm outer diameter co-rotating twin screw extruder, specially customized to meet harsh working conditions of petrochemical polymer production lines. This conveying screw block undertakes continuous material transportation, pre-compression and uniform feeding during resin compounding, devolatilization and pelletizing procedures. Optimized helical structure eliminates melt backflow under high pressure and high torque petrochemical extrusion environment, maintains stable material residence time, avoids thermal degradation of polymer raw materials. We supply full-size TEX77 conveying screw elements with customizable helix pitch, length and alloy materials to solve unstable feeding, rapid wear and medium corrosion points for petrochemical processing factories.

1. Stable Feeding for Petrochemical High-pressure Working Conditions
   Optimized double flight helix boosts material pushing force and stops melt backflow. Even material flow avoids polymer overheating and degradation.
2. Wear & Corrosion Resistant for Chemical Raw Materials
   Standard WR5 alloy reaches 58-60HRC for anti-abrasion. Stainless steel and nickel alloy options are available for corrosive resin processing, extending service life greatly.
3. High Precision & Fully Interchangeable
   5-axis CNC machining keeps tolerance within ±0.01mm. Grade 6 involute spline fits standard screw shafts tightly without torque loss, easy to assemble and adjust.
4. Flexible Customization for Different Chemical Processes
   Adjustable pitch, length and groove depth for powder feeding, high-viscosity resin compression and devolatilization. Custom screw layout design is provided based on your production demands.
5. Strict Complete Inspection
   Each segment gets spline, hardness and roughness tests before shipment. Material test reports and heat treatment certificates are supplied for factory filing.

This TEX77 conveying screw element widely applies to all mainstream petrochemical polymer processing lines with 77mm twin screw extruder:

• Raw polymer production: Polyolefin resin, engineering resin continuous compounding
• Modified plastic: Glass fiber reinforced polymer, flame retardant resin, high filler composite
• Devolatilization & purification: Volatile monomer removal, solvent separation of polymer melt
• Recycled chemical plastic: Waste plastic chemical regeneration, waste resin pelletizing
• Special chemical material: High viscosity elastomer, hot melt resin, functional polymer masterbatch

• MOQ: 1 piece for sample trial order, volume discount for orders over 20 pcs
• Production Lead Time: 15–25 working days for standard TEX77 convey screw element; 30–40 days for customized high-alloy segments
• Export Packing: Anti-rust oil + plastic film + moisture-proof solid plywood case, fits sea and air transportation
• After-sales Service: 12-month quality warranty, free technical guidance for TEX77 screw layout matching

Share your petrochemical raw material formula, target production throughput and extruder screw layout drawing with our engineers, we will recommend the most suitable TEX77 convey screw element pitch and alloy material matching your production line. Get factory direct quotation and free technical solution now!

1. Q: What extruder does TEX77 convey screw element match?
   A: It fits all 77mm outer diameter co-rotating twin screw extruder, OD/ID ratio 1.8, supports maximum torque density 13.2 Nm/cm³, specially designed for petrochemical polymer extrusion.
2. Q: Which material is suitable for TEX77 conveying segments processing corrosive petrochemical resin?
   A: SAM26 powder metallurgy alloy or 316L stainless steel are preferred, they resist acid monomer corrosion and maintain stable performance under long-term high temperature working conditions.
3. Q: Can I customize the helix pitch of TEX77 convey screw element for devolatilization process?
   A: Yes, wide-pitch deep-groove conveying segments are customized for high-efficiency devolatilization, narrow-pitch designs for high-pressure pre-compression procedures.
4. Q: How long is the service life of TEX77 feed screw element in petrochemical continuous production?
   A: Standard WR5 alloy version reaches 8000–12000 continuous working hours; anti-corrosion stainless steel type lasts 6000–9000 hours under corrosive medium processing.
5. Q: Is the inner spline of TEX77 conveying block compatible with standard screw shafts?
   A: 100% interchangeable, Grade 6 involute spline, no modification required during assembly with standard TEX77 series screw shafts.