Conical Twin Screw Barrel for PVC Granule Sheet Profile Pipe Extrusion Screw Barrel

=== Base Info ===

=== Description ===
Main Base materials
 1.38CrMoAlA  (Nitriding Steel)2.  SKD-61   (Special Tool Steel)3.  42CrMo (Ultrahigh Strength   Steel)4. DC53 ( Cold Work   Die Steel)  5. W6Mo5Cr4V2 ( High-Speed   Tool   Steel )6. HPT  
 
Main Alloy Materials1.  Ni-based alloy/Deloro alloy2.  Tungsten carbide/Wolfram carbide3.  NiCo-based alloy4.  Fe-based alloy5.  Co-based alloy    
 
 
Processing Technics1.  Heat treatment2.  Quenching3.  Nitriding treatment4.  Bimetallic alloy welding5.  Bimetallic alloy centrifugal casting6.  Hard-chrome electroplating  
 
 
 
Technical parametersNitriding layer depth0.5-0.8mmNitrided hardnessHRC56-58Nitrided brittlenessLess than grade 1Surface roughnessRa 0.4Linearity of screw0.015mmHard-chrome plating hardness≥HRC57Chrome-plating layer depth0.03-0.09mmBimetallic layer depth3 mmBimetallic layer hardnessHRC58-62Above are main technical information, a suitable screw and barrel will be made according to your requirement.