Product Description
Following are the Main Specifications of Screw Barrel for blowing Machine :-
1. Material:38CrMoAlA(Nitriding steel),SKD11,SKD61,high quality alloy steel,etc
2. Technology:nitriding treatment ,alloy coating spraying, heat-treatment applied
3. Application:PE,PVC,PP,etc.
4. Technical Index:
1)Depth of nitrided layer:0.5-0.8mm
2)Hardness of nitration:900-1020Hv
3)Frigility of nitration:Less than Grade 1
4)Surface roughness:Ra. 0.4um
5)Hardness of Cr-coating layer:>=950Hv
6)Thickness of Cr-coating layer:0.03-0.08mm
7)Hardness of Bimetallic layer:HRC55-72
8)Depth of Bimetallic layer:.2mm
5. Guarantee:Commom Nitrided:1-2years Bimetallic:much long time…