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Planetary screw

Base material:
(1) 38CrMoAlA(JIS SACM645) 
(2) 42CrMo(AISI 4140)


Process:
1.Heat treatment

2.Nitriding treatment


Technical Parameters:

1.nitriding depth: 0.4mm-0.6mm
2.nitriding hardness: 850-950HV
3.nitriding brittleness:<=1
4.the surface roughness:Ra0.4
5.screw straightness: 0.015mm


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