Double parallel screw and cylinder
Specification:
Double parallel screw and cylinder(Co-rotating and Counter-rotating):
35/2,45/2,50/2,65/2,80/2,90/2,105/2,125/2,130/2,150/2,180/2,200/2 etc.
We can make screw barrel according to different material and plastic product to choose different compress rate and L/D,and also can make double parallel screw and cylinder for CINCINNATI, BATTENFELD, KRUSSMAFFEI, BAUSANO and AMUT model spares!
Our Double parallel screw and cylinder processing production:
CustomerOrder--ProductDesign(CustomerDrawing)—ProductionFlowArrangement—Material Procurement—Hardening&Tempering—Drilling—RoughTurning—RoughThread Rolling(AlloySprayWelding)—Alignment—FineThreadRolling—Mixing—Alignment—High FrequencyTreatment—Alignment—Polishing—Grinding—120HoursNitridingTreatment—Acid Piclking—Polishing—Chrome Plating—O.D.Grinding—Packaging&Shipping!
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.
