Alloy Steel Conical Twin Screw & Barrel , Twin Screw Extruder Parts ISO9001 Standard

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Conical twin screw & barrel depth of nitration layer 0.05-0.08mm

Material

High quality alloy-steel

1) 38CrMoAIA(JIS SACM645)

2) 9Cr18MoV

Heat-Treatment

Nitriding treatment

Spray bimetallic coating

Quideline of technique:

Depth of nitration layer:0.05-0.08mm

Hardness of nitration:900-1000V

Fragility of nitration:less than grand one

Roughness of the surface:Ra0.4

Linearity of the screw:0.015mm/m

The surface hardness of chrom plating after nitrogention:more than 950hv

Chrome-plating layer thickness:0.025-0.085mm

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