Step 1-Rust Preventing OilStep 2-Casting Film WrappedStep 3-Polywooden Case
Type | screw barrel of rubber |
Material | 38CrMoAlA |
Process | Advanced nitriding & bimetallic process |
Hardness After Hardening & Tempering | HB280-320 |
Nitrided Hardness | HV900-1000 |
Nitrided Case Depth | 0.45-0.8mm |
Nitrided Brittleness: | Less than Grade 2 |
Surface Roughness | Ra 0.4 |
Screw Straightness | 0.015mm |
Alloy Hardness | HRC 56-65 |
Alloy Depth | 0.8-2.0mm |