Product name: Nitrided conical twin screw and barrel
The nitrided conical twin screw and barrel for extruder that can strengthen the performance of the plastic products.We are a professional manufacturer of screw and barrel which has been in the line for many years,we can make all kinds of screw and barrel according to your requirments.
The conical twin screw and barrel technical specification:
| Material | 38CrMoALA,9Cr18MoV |
| Application | PVC,ABS,TPO |
| 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 |
| Chromate-plating Depth: | 0.05-0.10mm |
| Bimetallic-alloy Hardness: | HRC56 -65 |
| Alloy Depth: | 0.8-2.0mm |
Compressing rate of screw can be designed according to different raw materials and products
The nitrided conical twin screw and barrel
