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Parallel twin screw and barrel

Specification:
Diameter: Φ45mm-φ200mm
L/D ratio: 16-35                
The compression ratio of screws can be designed according to different products and ingredients

 

Technical Information Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61)

Technics:
Heat treatment
Nitriding treatment


Technical parameter:
Nitrided layer depth:0.5-0.8mm
Nitrided hardness:900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
 

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