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Parallel twin screw and barrel

Specification: 

Screw diameter:Φ45mm-Φ200mm
Aspect ratio:16-35

The screw compression ratio can be designed according to different products and different formulations


Base material:

1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3) 4Cr5MoSi V1 (JIS SKD-61)


Process:

Heat treatment

Nitriding treatment


Technical Parameters:

Nitriding depth: 0.50mm-0.80mm                                
Nitriding hardness: 900-1000HV               
Nitriding: <= Level 1                   
Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm   


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