Extruder single screw barrel-Zhoushan Qingxiang screw < Runxiang screw > machinery factory

Extruder single screw barrel

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Specifications:
 
Screw diameter: 15-300
 
Length diameter ratio: 15-46
 
 
 
Product type:
 
Screw for different plastic products can be selected: common type, pin type, barrier type, separation type, exhaust type, etc
 
 
 
Base material:
 
1)38CrMoAlA(JIS SACM645)
 
2)42CrMo(AISI 4140)
 
 
 
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
 
Hardness of surface chromium plating layer after nitriding: ≥ 950hv
 
Thickness of chromium plating layer: 0.025 ~ 0.085mm
 
Double alloy depth: 3mm 
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