Description
| Specification: ∅45-200mm | |
| L/D Ratio: 18-40 | |
| According to different products and formulations to design screw structure and compression ratio. | |
| Steel Material | Heat Treatment |
| High Quality Alloy Steel | |
| 38CrMoAlA(SACM645) | Nitriding Treatment or Bimetallic Treatment |
| Technical Parameters | |
| Tempering Hardness: HB280-HB300 | Chrome Plating Thickness: 0.025-0.1mm |
| Nitriding Hardness: HV900-HV1100 | Chrome Plating Hardness: ≧HV900 |
| Nitriding Thickness: 0.5-0.8mm | Bimetallic Alloy Depth: 1.5-2mm |
| Nitriding Brittleness: 1 Level | Bimetallic Alloy Hardness: HRC58-HRC65 |
| Surface Roughness: ≦Ra0.4 | |
| Screw Straightness: 0.015mm | |
