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Bimetallic screw and barrels
bimetallic screw barrel
Info:

15mm-250mm  screw diameter
300mm-8000mm  screw length
40mm-400mm barrel outer diameter
L/D:10-46
 
screw:
1.      normal nitriding screw (SACM645)
2.      top gear spray-welding bimetallic screw
3.      wlfram steel screw
4.      hard scries screw:NPT1,NPT2,NOT3
5.      ceramic and diamond on surface screw
barrel
1.      normal nitriding barrel (SACM645)
2.      centrifugal casting bimetallic barrel(A、B、C , three grades)
3.      hard series barrel(NPT1,NPT2NPT3)
 
 
HV≥290             surface hardness
HV850-1000      nitriding hardness
0.45-0.7mm       nitriding depth
≤one degree     nitriding brittleness
0.015mm           screw strightness
≥900HV             chrome hardness
0.05-0.1mm       chrome thickness
60-70HRC          bimetallic hardness
0.8-2.0mm         bimetallic depth



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