We supply various types of screw barrels according to customer's requirement.
Product name:screw barrel assembly parts
Material:38CrMoAlA,SKD11,SKD61,high quality alloy steel,etc
Technology:nitriding treatment,alloy coating sparying,heat-treatment,etc
Appliance:PE,PVC,PP,etc
Technical index:
Depth of Nitrated Layer: 0.5-0.8mm
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface roughness: Ra 0.4um
Hardness of Cr-coating Layer: ≥950Hv
Thickness of Cr-coated Layer: 0.03-0.08mm
Hardness of Bimetallic Layer: HRC55-72
Depth of Bimetallic Layer: >2mm
Guarantee:Common nitrided:1-2years,Bimetallic:much long time...
