Extrusion screw & barrel
Specification:
Dia. 15-300 mm Length 300-9000 mm L/D ratio: 15-50
Grade available:
1. Standard grade: 38CrMoAlA + nitriding 96 hours
2. Bimetallic grade: 38CrMoAlA + bimetallic alloy
3. TC-A grade: Tungsten carbide 40%
4. TC-B grade: Tungsten carbide 25%
5. TC-C grade: Tungsten carbide 9.5%
Techinical information :
Depth of Nitrated Layer: 0.5-0.8mm
Heat treatment: Nitriding 96 hours
Fragility of nitration: Less than grade 2
Hardness of nitration:HV900-1060 (HRc56°-65°)
Roughness of the surface:Ra 0.4μm
Screw straightness: 0.015mm/m
Chrome plating thickness: 0.01-0.1mm
Alloy Hardness:HRC58-62
Alloy Depth:>2mm
Common Nitrided:1-2years;Bimetallic: much longer lifetime.
Our inspection for extusion screw barrel:
Qunying facotry:
As the best supplier,Qunying aslo make any specifcation of screw barrel for Haitian, Demag, Engel, Klauss maffei, Battenfeld, Nigro bossi, Arburg, NPM, BOY, Husky, Fanuc, Billion, Sumitomo, Nippon Steel, Toshiba, Nissei, Toshiba, Mitsubishi etc.
