Detail Information For Bimetallic KMD Twin Parallel Screw and Barrel for PVC/WPC Board Extrusion:

Application: for Kraussmaffei extrusion

Customer's Requirement:  good tougness and abrasive resistance.

Screw's quality: bimetallic quality, screw's alloy layer contains 10%-20% tungsten carbide powder.

Barrel's quality: bimetallic quality, make slots are barrel's extruder zone, then these slots will be welded with alloy layer, alloy layer contains 10%-20% tungsten carbide powder.


Detail Information For All Brand Twin Parallel Screw and Barrel:

Application:  
For the production of pipes, profiles, sheets, such as SPC floor, PVC wall board, PVC wood plastic, PE wood plastic, high molecular sheet, baking-free brick plate, high calcium plate, high calcium pipes, high calcium profiles, soft PVC sheet, PVC foam board, PP, PE, ABS, PVC, granulation and etc.

Specification: 
Screw diameter: Φ45mm-Φ200mm, L/D ratio from 16-45.
we can produce twin parallel screw and barrel for all brand extrusion, experienced engineer can be sent to your factory for measuremnt.

Quality:
1: Nitriding quality------ base material: 38CrMoAlA(JIS SACM645)
2: Bimetallic quality-----Good abrasive& corrosive resistance.

Heat treatment:
Advance hardening and tempering
Nitriding treatment

Technical Parameters:
Nitriding depth: 0.50mm-0.80mm                                
Nitriding hardness: HRC56-58                          
Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm  
Alloy layer depth: 2mm-3mm
Alloy layer hardness: HRC56-64 

OULIN SCREW:  YOUR LOYAL PARTNER FOR SCREW AND BARREL