single screw and barrel for injection

Material 1 38CrMoAIA(JIS SACM645)2 42CrMo(JIS SCM440)3 Nickel based alloy powder Heat treatmentNitriding treatment Bimetallic welding Centrifugal casting Electroplated Hard-chrome Finish Nitride depth 0.7mm Surface hardness HV950 - HV1,020 Fragility of nitrition less than grade 1 Screw straight tolerance 0.015 mm/m Surface roughness Ra 0.4μm Linearity of the screw 0.015mm Depth of double alloys > 2ram Bimetallic layer depth 3mm ProcessLaser Coating Tungsten Carbide PTA Melt-Welding Alloy Centrifugal Mould Bimetallic Alloy Advanced nitrogen oozes handicraft Vacuum Quenching Titanizing Nickel Plating Chorme Plating

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