For the injection molding machine, extrusion machine, rubber machine, and other special products required by special screw barrel, designed and manufactured to ensure the end-user to improve product quality, reduce production costs and create greater value demand.

Material

Alloy-steel of high-quality

38CrMoAIA(JIS SACM645)

42CrMo(JIS SACM440)

9Cr18Mov

CW6Mo5Cr4V2

Heat-treatment

Nitriding treatment

Electroplated hard-chrome finish

High-frequency quenching

Spray coating bimetallic-alloy

Vacuum quenching

Technical data

Depth of nitration layer: 0.50-0.80mm

Hardness of nitration: 900-1000HV

Fragility of nitration: less than grade 1

Roughness of the surface: Ra0.4

Linearity of the screw: 0.015mm

The surface hard chromium plating hardness after nitrogenation: ≥950Hv

Chrome-plating layer thickness: 0.025-0.085

conical twin screw and barrel