Reiloy Extrusion Screws

Description

The selection of the proper extrusion screw design for a given processing environment should be based on the resin or resins to be processed. There are no standards in the plastics industry for a 

general-purpose extrusion screw design.                                                                                                                                                                                                                                                              

• Screw design
  • 3-Zone screws  
  • Multi-start screws  
  • Barrier screws   
  • Vented screws 

Hard Facing & Through Hardening

Iron-Based Hardening Alloys

RC3 - Highest wear protection with good corrosion resistance

Hardness at room temperature: min. 56 HRC

Main alloy components: V, Cr

Microstructure: Martensitic iron-based alloy with primary vanadium monocarbide (VC) precipitate and Cr7C3 chromium carbides

RC5

Hardness at room temperature: min. 57 HRC

Main alloy components: V, Cr, Ni

Microstructure: Martensitic iron-based alloy with primary fine vanadium monocarbide (VC) precipitate as well as chromium carbides (Cr7,Cr3).

Nickel-Based Hardening Alloys

RP50 - Maximum hot-hardness with max adhesive wear resistance

Hardness at room temperature: min. 49 HRC

Main alloy components: Mo, Cr, B

Microstructure: Nickel cobalt-base alloy with primary solidified Ni2B nickel borides and Mo-Si-C Laves phases. Eutectic solidified Cr7C3 chromium carbide and Ni3B nickel borides.

Cobolt-Based Hardening Alloys

RS12 - Optimum wear and corrosion protection at high temperatures.

Hardness at room temperature: min. 45 HRC

Main alloy components: Cr, W

Microstructure: Dendritic cobalt-base matrix eutectic alloy precipitated mixed tungsten and chromium carbides in the spaces between dendrites