Detailed Description：

Size: φ45/2~φ200/2
(Screw structure and compression ratio can be designed according to different products and parts.) 

Technical Parameter:
Quenching and Tempering Hardness：HB280-320
Nitriding Hardness：HV850-1000
Nitriding Depth ：0.45~0.7mm
Nitridng Brittleness: 2nd Level
Surface Roughness：≤Ra0.4
Screw Straightness：0.015mm
Nitrided Chromium Coating Surface Hardness≥900HV
Chromium Coating Thickness ：0.025~0.10mm
Duplex Alloy Hardness：HRC50-65
Duplex Alloy Depth：0.8~2.0mm

Materials:
Quality 38CrMoAIA (41CrAIMo7)
40Cr

Technologies:
Advanced Nitriding Technology
Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology
Quality Powder Metallurgy Materials
Hard Metal Cold/Thermal Spraying Technology