products details
|
Plastic Twin Screw Extruder Mixing Screw Element Sandblasting Surface Treatment Parts
| Brand Name: | OEM |
| Model Number: | ME001 |
| MOQ: | 10 |
| Supply Ability: | 5000pcs/month |
Plastic mixing screw element
,Shaft Mounted mixing screw element
,150mm extruder screw element
Plastic Twin Screw Extruder Mixing Screw Element | Sandblasting Surface Treatment Parts
Our sandblasting surface treatment plastic twin screw extruder mixing screw element is the core mixing modular part of co-rotating parallel twin screw extruders, specially designed for plastic compounding, filler dispersion and polymer homogenization.
Different from polished bright surface screw segments, this series adopts professional sandblasting surface finish technology, forming uniform matte metal texture on the surface of kneading blocks, slotted mixing elements and special mixing segments. The sandblasting process removes machining burrs, eliminates surface stress concentration, and greatly optimizes anti-sticking, wear resistance and self-cleaning performance during plastic extrusion.
All mixing screw elements cover outer diameter from 12mm lab mini size to 300mm large industrial specification, including KB30°/45°/60°/90° kneading blocks, SME slotted mixing elements, ZME reverse mixing segments. Multiple wear-resistant alloy materials are optional, fully compatible with JSW TEX, Leistritz ZSE and other mainstream twin screw extruder models, widely matched for PP, PE, PVC, biodegradable plastic, WPC and color masterbatch production lines.
| Parameter Item | Specification Details | Tolerance Standard |
|---|---|---|
| Product Name | Plastic Twin Screw Extruder Mixing Screw Element (Sandblasting Surface Treatment) | — |
| Outer Diameter (OD) Range | 12mm, 16mm, 20mm, 24mm, 30mm, 35mm, 42mm, 50mm, 65mm, 75mm, 85mm, 95mm, 110mm, 135mm, 160mm, 200mm, 250mm, 300mm | ±0.01 mm |
| Element Length Range | 12mm – 300mm (custom lead/length ratio supported) | ±0.02 mm |
| Inner Spline Type | Involute spline, rectangular spline (customizable) | H7 Grade |
| Spline Tooth Count | 18T, 20T, 22T, 26T, 27T, 30T, 44T (match extruder shaft) | ±0.005 mm |
| Spline Pressure Angle | 30° / 45° (OEM standard) | ±0.5° |
| Center Distance | 18mm, 30mm, 34.5mm, 42mm, 52mm, 60mm, 67.8mm, 78mm, 92mm, 110mm | ±0.01 mm |
| Intermeshing Clearance | 0.15mm – 0.35mm (adjustable by model) | ±0.02 mm |
| Surface Treatment | Full-surface sandblasting (matte finish) | Uniform Ra 1.6–3.2 μm |
| Sandblasting Abrasive | White corundum / glass bead (optional) | 80# – 120# mesh |
| Sandblasting Depth | 0.003mm – 0.008mm (no dimensional deformation) | — |
| Base Material Hardness | HRC 58 – 65 (after vacuum quenching) | ±1 HRC |
| Surface Roughness After Blasting | Ra 1.6 – 3.2 μm (matte anti-stick texture) | — |
| Applicable Extruder Type | Co-rotating parallel twin screw extruder | — |
| Compatible Brands | JSW TEX, Leistritz ZSE, Berstorff, APV, lab twin screw extruders | 100% interchangeable |
| Mixing Element Type | Standard Model Code | Typical Lead/Length Specs (65mm machine as reference) | Shear Intensity | Core Function |
|---|---|---|---|---|
| KB Kneading Block Series | KB30°/7/28, KB30°/7/56, KB30°/7/72 | 30° offset angle, 7 discs | Low Gentle Shear | Distributive blending, heat-sensitive materials |
| KB45°/5/24, KB45°/5/36, KB45°/5/56 | 45° offset angle, 5 discs | Medium Balanced Shear | Universal compounding, masterbatch mixing | |
| KB60°/4/22, KB60°/4/44, KB60°/4/56 | 60° offset angle, 4 discs | High Strong Shear | Filler dispersion, glass fiber compounding | |
| KB90°/5/24, KB90°/5/36, KB90°/5/56 | 90° offset angle, 5 discs | Extreme Shear / No Conveying | Pressure building, devolatilization | |
| SME Slotted Mixing Element | SME22/22, SME32/32, SME44/44, SME56/56 | Two-flight forward slotted | Medium Low Shear | Enhanced distributive homogenization |
| ZME Reverse Mixing Element | ZME8/16, ZME10/20, ZME12/24, ZME16/32 | Single-head reverse slotted | Medium Shear | Back pressure + secondary mixing |
| TME Multi-Tooth Mixer | TME12, TME18, TME24 | Multi-stage distribution teeth | Low Gentle Shear | Trace additive uniform dispersion |
| Reverse L-Type Conveying Mixer | 56/28L, 72/36L, 96/48L, 144/72L | Left-hand reverse spiral | Low Shear / Anti-backflow | Pressure holding, prevent material backflow |
Naming Rule: Number before "/" = lead (mm); Number after "/" = element length (mm); Suffix "L" = left-hand / reverse rotation.
| Base Material Grade | Hardness After Heat Treatment | Wear Resistance Rating | Corrosion Resistance | Sandblasting Compatibility | Recommended Plastic Application |
|---|---|---|---|---|---|
| WR5 Powder Metallurgy Alloy | HRC 62 – 65 | ★★★★★ | ★★★★☆ | Excellent, uniform matte finish | High-fill calcium carbonate, glass fiber reinforced plastic |
| W6Mo5Cr4V2 (6542 HSS) | HRC 60 – 63 | ★★★★☆ | ★★★☆☆ | Good, consistent texture | General PP/PE masterbatch, WPC compounding |
| 45# Nickel-Based Alloy | HRC 58 – 60 | ★★★☆☆ | ★★★★★ | Excellent, anti-corrosion matte surface | PVC, flame retardant, acid-containing plastic formulas |
| 92# Nickel-Based Alloy | HRC 55 – 58 | ★★☆☆☆ | ★★★★★ | Good, smooth matte finish | Strong corrosive chemical plastic extrusion |
| 38CrMoAl Nitrided Steel | HRC 60 – 62 | ★★★☆☆ | ★★☆☆☆ | Good, cost-effective matte texture | Low-fill general plastic, lab test extruder |
| 316L Stainless Steel | HRC 45 – 50 | ★★☆☆☆ | ★★★★★ | Excellent, food-grade matte surface | Food-grade plastic, medical polymer extrusion |
| Process Parameter | Standard Value | Adjustable Range | Technical Effect |
|---|---|---|---|
| Abrasive Type | White Corundum WA | White corundum / glass bead / silicon carbide | Different surface roughness & matte effect |
| Abrasive Mesh Size | 100# | 80# / 100# / 120# / 180# | Larger mesh = finer matte texture |
| Blasting Pressure | 0.4 – 0.6 MPa | 0.3 – 0.8 MPa | Control blasting depth & surface strength |
| Blasting Distance | 150 – 200 mm | 100 – 300 mm | Uniform surface coverage |
| Blasting Angle | 45° – 60° | 30° – 90° | Optimize burr removal effect |
| Surface Roughness After Blasting | Ra 2.0 μm | Ra 1.6 – 3.2 μm | Anti-stick performance adjustment |
| Blasting Material Removal Depth | ≤ 0.005 mm | 0.003 – 0.008 mm | Ensure dimensional accuracy unchanged |
| Coverage Rate | 100% full surface | — | No dead corner, uniform matte appearance |
| Inspection Item | Inspection Method | Acceptance Standard |
|---|---|---|
| Outer Diameter | Micrometer measurement | Within ±0.01mm tolerance |
| Spline Dimension | Spline gauge + profile projector | H7 grade, smooth assembly |
| Hardness | Rockwell hardness tester | HRC 58–65 (by material grade) |
| Surface Roughness | Roughness tester | Ra 1.6–3.2μm after sandblasting |
| Sandblasting Uniformity | Visual + magnifier inspection | 100% coverage, no missing blast area |
| Intermeshing Clearance | Assembly trial fit | 0.15–0.35mm standard clearance |
| Surface Defect | Visual inspection under 500lux light | No crack, no burr, no over-blasting damage |
| Material Composition | Spectrometer detection | Match declared material grade 100% |
- Uniform Matte Anti-Stick Surface
Fine sand particle blasting forms tiny concave-convex matte texture, effectively reduce plastic melt adhesion, avoid material carbonization and black spots during long-term continuous plastic extrusion, lower cleaning frequency.
- Eliminate Machining Residual Burrs & Stress
Sandblasting thoroughly removes tiny burrs generated by CNC machining, releases internal surface stress of alloy steel, prevent crack damage under high shear and high temperature working conditions.
- Improve Wear & Corrosion Resistance
The sandblasted rough surface can enhance adhesion of follow-up nitriding, alloy coating treatment, double extend service life when processing high-filler, corrosive plastic formulas.
- Stable Self-Wiping Matching Performance
Sandblasting will not change the overall dimensional tolerance of mixing screw element, keep standard intermeshing clearance, maintain complete self-wiping function between twin screw segments.
- Beautiful & Consistent Industrial Appearance
Uniform matte metal finish without uneven reflection, high-grade industrial product texture, suitable for export high-standard extrusion equipment supporting spare parts.
| Product Type | Structural Feature | Processing Function | Applicable Plastic Production |
|---|---|---|---|
| KB Kneading Block (30°/45°/60°/90°) | Multi-lobe staggered disc, sandblasted all over surface | Dispersion & distribution mixing, shear filler agglomerates | Glass fiber modified plastic, carbon black masterbatch, WPC |
| SME Slotted Mixing Element | Two-flight open slot structure, sandblasted slot inner wall | Enhance distributive homogenization, low dead zone | Biodegradable PLA/PBAT plastic, food-grade plastic pellets |
| ZME Reverse Mixing Segment | Single-head reverse spiral, full sandblasting | Build pressure + secondary mixing, devolatilization | Reactive extrusion, flame retardant PVC compounding |
| TME Multi-Tooth Mixing Element | Multi-stage tooth mixing structure, matte sandblasted surface | Uniform dispersion of trace additives | Functional masterbatch, medical plastic modification |
- Lab Mini Series: 12mm, 16mm, 20mm, 24mm, 30mm (lab test plastic formula, small trial extruder)
- Medium Production Series: 35mm, 42mm, 50mm, 65mm, 75mm, 85mm, 95mm (daily masterbatch, general plastic granulation)
- Large Heavy-Duty Series: 110mm, 135mm, 160mm, 200mm, 250mm, 300mm (high-output plastic recycling, large-scale compounding line)
All blanks are vacuum heat treated to HRC 58–65, then sandblasting surface processing:
- WR5 Powder Metallurgy Alloy: Top wear resistance, best for high-filler plastic long-term production
- W6Mo5Cr4V2 (6542 HSS): Cost-effective universal material for medium shear mixing segments
- 45#/92# Nickel Alloy: Excellent corrosion resistance for PVC, acid-containing plastic formulas
- 38CrMoAl Nitrided Steel: Economical choice for low-filler lab plastic extrusion
- 316L Stainless Steel: Food & medical grade, non-toxic sandblasted surface for food plastic processing
- Biodegradable plastic compounding (PLA, PBAT, starch-based modified pellets)
- Wood plastic composite (WPC) granulation and profile extrusion
- PP/PE color masterbatch, functional filler masterbatch manufacturing
- Glass fiber reinforced engineering plastic modification
- PVC, flame retardant, anti-static special plastic production
- Plastic waste recycling, devolatilization extrusion processing
- Lab small twin screw extruder plastic material research
- ISO9001 certified workshop, full flow inspection: raw material test → CNC machining → sandblasting treatment → dimensional tolerance detection → hardness test → surface finish inspection
- Strict sandblasting process standard: uniform sand particle size, consistent blasting time, no over-blasting deformation of screw element
- Export anti-rust oil treatment + fumigated wooden case packaging for long sea transportation
- 6-12-month quality warranty, professional screw configuration technical support
- Standard sandblasted mixing elements in stock; customized size/sandblasting strength orders deliver in 15–30 working days
A: Sandblasting is a surface finishing process that sprays fine abrasive sand on the alloy mixing element surface at high pressure, forming uniform matte texture, removing burrs and improving anti-stick and wear performance for plastic extrusion.
A: Sandblasting matte surface reduces plastic melt adhesion, avoids material carbonization; polished smooth surface is easy to stick viscous plastic, leading to black spots in finished pellets.
A: No. We control blasting depth strictly within 0.005mm, outer diameter, spline size and intermeshing clearance remain fully consistent with OEM standards.
A: Yes. 316L stainless steel sandblasted mixing segments are non-toxic, no coating shedding, fully meet food plastic extrusion hygiene requirements.
A: We support adjustable sandblasting roughness according to customer plastic formulas, provide fine matte and medium matte two surface grades for selection.
Factory View
