Product Description
☆Bimetallic Screw production method:
Plasma Alloy Coating Spraying or Wc/Co Whole spray welding
☆Bimetallic Barrel production method:Centrifugal Casting (Inlay Alloy)
Outstanding features of bimetallic screw:
1)Hardness HRC58-72
2)Hardness layer reach 2-3mm thickness,Hardness doesnot decrease with depth and under normal
temperature
3)Best corrosion-resistance
4)Abrasion resistance and wear resistance on the harded layer is 2-3 times higher than that treated
by common treatment!
☆Bimetallic alloy materials:
1)Fe-based alloy 2)Ni-based alloy/Deloro alloy
3)Co-based alloy 4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide
☆Tugsten carbide level:
Level A - containing Tungsten of 40%
Level B - containing tungsten of 25%
Level C - containing tungsten of 9.5%
☆Hardness of Bimetallic Layer: HRC55-72
☆Thickness of Bimetallic Layer:≥2mm
☆Material application
1) General Plastics: ABS,PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC,etc
2) PA + GF(Glass Fiber)
3) Flame-resistant Reinforced Plastics
4) Modified Engineering Plastics
5) All kinds of Mixed Recycled Material(in Scrap or Granule),etc
Technical Data:
1. Material:38CrMoAlA
☆(Nitriding Treatment-120 hours)
Tempering hardness
HB260-290
Nitriding hardness
HV900-1000
Nitriding thickness
0.5-0.8mm
Fragility of Nitration
≤Two class
Roughness of the surface
Ra0.4um
Screw Alignment
0.015mm
☆(Hard Chrome Plating treatment)
Thickness of Hard Chrome Plating Layer
0.05-0.10mm
Hardness of Hard Chrome Plating Layer
≥950HV
2.Material: special alloy steel
After vacuum hardening heat treatment,it can improve the working life greatly!
Company Profile
Manufacturer of Modern SCREW&BARRELin CHINA Monthly production: Over 300 sets
Audited Supplier 
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