1. screw element 2. High Quality Base Material 3. Processed to drawing or to your request on output&raw material

screw element

Detailed Product Description

1.screw barrel 2.High Quliaty Base Material 3.Processed to drawing or to your request on output&raw material

screw barrel

Material

1 38CrMoAIA(JIS SACM645)

2 42CrMo(JIS SCM440)

3 Cr12MoV(JIS SKD-11)

4 4Cr5MoSIV(JIS SKD-61)

Heat treatment

Nitriding treatmentElectroplated hard chromium coatingHigh-frequency quenchingSprey conating Bimetallic-alloy

Nitride depth	0.5-0.8 mm
Surface hardness	HV900 - HV1,020
Chromate plating	Thickness 0.05 mm - 0.10 mm, hardness HV950
Screw straight tolerance	0.015 mm/m
Surface roughness	Ra 0.4μm
Linearity of the screw	0.015mm
Depth of double alloys	> 2ram

Process

Laser Coating Tungsten CarbidePTA Melt-Welding AlloyCentrifugal Mould Bimetallic AlloyAdvanced nitrogen oozes handicraftVacuum QuenchingTitanizingNickel PlatingChorme Plating 

What's more, we can supply professional screw and barrel to your order!