Precision-Engineered Twin Screw Extruder Elements with HRC 58-62 Hardness and

Product Specification

Precision-Engineered Parts for WPC, PVC, and High-Filler Plastic Compounding

Are you facing frequent production halts due to worn-out screw elements? In the high-abrasion environments of WPC (Wood Plastic Composite) and PVC manufacturing, standard components simply don't last.

Our Parallel Twin Screw Extruder Elements are designed to bridge the gap between "expensive European OEM parts" and "low-quality replacements." Engineered with HRC 58–62 tool steel, these elements provide the durability required for 24/7 industrial extrusion, ensuring stable output and maximum ROI.

Key Features & Technical Advantages

Premium Material Grade: We use high-vanadium tool steel (W6Mo5Cr4V2) and optional Powder Metallurgy (HIP) materials to withstand extreme mechanical stress.

Superior Hardness (HRC 58–62): Through vacuum heat treatment, the hardness penetrates deep into the material, not just the surface, allowing for consistent performance even after long-term use.

CNC Profile Grinding: Every element is processed on high-precision CNC grinding machines, ensuring a mirror-finish surface and perfect engagement between screws.

Modular Flexibility: Fully compatible with conveying, kneading, mixing, and reverse configurations to optimize your specific material melt.

Corrosion Protection: Optimized for chemical resistance, specifically targeting the HCl gas release in PVC processing.

Technical Specifications

Why Choose Our Extruder Components? (Company Strength)

20+ Years of Material Expertise: We don't just machine parts; we understand the metallurgy behind alloy materials. We know exactly which steel grade fits your specific calcium powder proportion (e.g., 35% CaCO3).

Global OEM Compatibility: Our database covers almost all major international brands. You only need to provide the model or a simple drawing.

Strict Quality Gate: Every shipment includes a Material Certificate and a Dimensional Inspection Report. We offer video outgoing inspections for your peace of mind.

Cost-Effective Logistics: Fast turnaround (30–60days) with reliable international shipping, ensuring your production line never stays idle.

Competitive Comparison: Why BLM is the Smarter Choice

Target Applications & Industries

Our screw elements are the "workhorse" for challenging compounding tasks:

WPC (Wood Plastic Composite): Handling high-abrasion wood fiber loads.

PVC Compounding: Resistant to the corrosive nature of rigid and soft PVC.

Masterbatch Production: High-dispersion elements for carbon black and TiO2.

Engineering Plastics: Processing PA6, PA66 + Glass Fiber (up to 50%+).

Biodegradable Plastics: Precise temperature control for PLA/PBAT/Starch blends.

FAQ

Q1: How do I know if these elements will fit my specific extruder brand?

A: We manufacture elements that are 100% interchangeable with major brands like Coperion, Leistritz, and others. We verify fitment through standard serial numbers or custom drawings.

Q2: My process uses 35%+ Calcium Powder. How will your elements hold up?

A: For high-filler (CaCO3) applications like PVC/WPC, we recommend our specialized High-Vanadium Alloy or Bimetallic coatings, which specifically prevent abrasive "scouring" of the screw flights.

Q3: Can you produce custom kneading blocks based on our formula?

A: Yes. We can customize the L/D ratio, stagger angles, and disk thickness to improve mixing efficiency for specialized engineering plastics.

Q4: Do you offer samples for testing?

A: We encourage trial orders. Testing a set of kneading blocks in your most high-wear zone is the best way to prove our durability.