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Reiloy Screws – Reifenhäuser

Reiloy Screws

Custom wear-protected screws up to 9 m long

Manufacturer
Reifenhäuser

Reiloy screws for extrusion and injection moulding combine an application-specific geometry, wear protection and a suitable material pairing with the barrel. They are manufactured in diameters of 40–300 mm and lengths of up to 9 m in Smart, Advanced, Premium and Select versions.

Benefits

  • Hard alloys developed and produced in-house
  • Screw geometry tailored to the application, optimal barrel/screw combination
  • Long maintenance intervals
  • Screw lengths up to 9 m
  • ReiMix-HS: up to 3× better mixing effect than a spiral shear section
  • Series production to customer drawings
  • Quality to DIN EN ISO 9001:2015
Applications:
  • Extruder plasticizing units
  • Injection moulding machine plasticizing units
  • Processing of filled and abrasive plastics
  • Fluoropolymers (PTFE, FEP)

We supply the equipment configured for your application. In your inquiry, please state the material processed, the required throughput and the line parameters – we will prepare a tailored quotation.

Go to inquiry

Need help choosing? Call us on +420 571 647 228 or write to info@azurr-tech.cz.

Technical data

Screw diameter40–300 mm
Lengthmax. 9,000 mm
Surface treatmentplasma or gas nitriding, hard chrome, PVD
Nitriding steel (Smart) – surface hardness900–1 100 HV5
R331 / R341 – hardnessmin. 56 HRC
R331 / R341 – compositionvanadium carbides, Cr; iron-based martensitic alloy
RS12 – hardnessmin. 45 HRC
RS12 – main alloying elementsCr, W

Description

Reiloy manufactures ready-to-install screws to the customer's drawing or with its own geometry design. It develops and produces the hard alloys for hardfacing in-house and cooperates with machine builders, raw material manufacturers and universities.

Insufficient wear protection leads to material loss on the screw and barrel, internal leakage and process fluctuations. The choice of version is therefore based on the filler content and abrasiveness of the processed material.

The optional ReiMix-HS mixing element improves the mixing effect up to threefold compared with a spiral shear section and can be used in both extrusion and injection moulding.

Optional equipment

  • Geometries: 3-zone screws, multi-flight screws, barrier screws, vented screws, twin screws
  • Smart – standard applications: nitriding steel 34CrAlNi7-10 (1.8550), nitrided; surface hardness 900–1,100 HV5
  • Advanced – plastics with low filler content: Ø < 50 mm X153CrMoV12 (1.2379) through-hardened, Ø ≥ 50 mm 31CrMoV9 (1.8519) with R331 hardfacing (RC3 Inlay Armoring) on the flight lands, min. 56 HRC
  • Premium – plastics with filler content > 30%: Ø < 50 mm PM-HIP through-hardened, Ø ≥ 50 mm 38CrMo16 (1.2316) or 31CrMoV9 (1.8519) with R341 hardfacing (RC3 Full Flight Armoring) over the entire flight surface, min. 56 HRC
  • Select – special alloys for fluoropolymers (PTFE, FEP etc.); cobalt-based alloy RS12 with tungsten and chromium carbides – highest corrosion resistance even at high temperatures, min. 45 HRC
  • Screws up to 70 mm diameter also available in through-hardened tool steel (Advanced) or through-hardened PM-HIP tool steel (Premium)
  • Surface treatment: plasma nitriding, gas nitriding, hard chrome plating, PVD coating
  • ReiMix-HS mixing element

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