Parallel twin screw barrel-Zhoushan Qingxiang screw < Runxiang screw > machinery factory

Parallel twin screw barrel

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Specifications:

Screw diameter: Φ 45mm - φ 200mm

Length diameter ratio: 16-35

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)

 

Treatment process:

heat treatment

Nitriding treatment

 

Technical parameters:

Nitriding depth: 0.50mm-0.80mm

Nitriding hardness: 900-1000hv

Nitriding brittleness: < grade 1

Surface roughness: RA 0.4

Straightness of screw: 0.015mm

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