Technical Index:
Materil:38CrMoALA
Heat-treatment:
1.Nitriding treatment
2.Electroplated hard-chrome finish
3.High-frequency quenching
4.Spray coating Bimetallic-alloy
Technical specification
| Hardness After Hardening &Tempering: | HB240 -280 |
| Nitrided Hardness: | Hv850-1000 |
| Nitrided Depth: | 0.45-0.7mm |
| Nitrided Brittleness: | ≤Grade 2 |
| Surface Roughness: | Ra0.4 |
| Screw straightness: | 0.015mm |
| Surface Chromate-plating's Hardness After Nitrided: | ≥900Hv |
The screw barrel can be designed according to your material and products.
38CrMoALA single Extruder screw barrel for extruder
