Product Main

Specifications

Conical twin screw barrel for plastic extruder

Specification : ? 45/90~? 92/188
Screw structure and compression ratio can be designed according to different products and parts.
Technical Parameter
Quenching and Tempering Hardness: HB280-320
Screw Straightness: 0.015mm
Nitriding Hardness: HV850-1000
Nitrided Chromium Coating Surface Hardness≥ 900HV
Nitriding Depth : 0.45~0.7mm
Chromium Coating Thickness : 0.025~0.10mm
Nitridng Brittleness :2 Level
Duplex Alloy Hardness: HRC50-65
Surface Roughness: ≤ Ra0.4
Duplex Alloy Depth: 0.8~2.0mm
Materials and Technologies
Quality 38CrMoAIA (41CrAIMo7)
SKD61(H13)
Quality Duplex Stainless Steel
Gr12MoV
42CrMo
Quality Powder Metallurgy Materials
40Cr
Hard Metal Cold/Thermal Spraying Technology
Zinc 3# Steel
Advanced Nitriding Technology
Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology