conical vented screw barrel
| Hardness of adjuster | HB260-290 |
| Depth of nitration | 0.4-0.7mm |
| Hardness of nitration | HV800-1050 |
| Depth of double alloys | 0.8-2.0mm |
| Hardness of double alloys | HRC56-65 |
Fragility of nitration: Less than grade 1
Roughness of the surface: Ra0.4
Linearity of the screw: 0.015mm
The surface hard chromium plating hardness after nitrogenation: ≥900HV
Chromium-plating layer thickness: 0.05-0.1mm
Quality 38CrMoAIA
Quality twin-phase stainless
Quality satellite powder of surface spray
Cold alloys hot alloys
Advanced nitriding
Process of hot sprayed hard alloys