feed screw and barrel for rubber extruder machine

feed screw and barrel for rubber extruder machine Sketch of Business FlowTechnical specifications:Hardness of adjuster: HB260-290Hardness of nitration: HV800-1050Depth of nitration: 0.4-0.7mmFragility of nitration: Less than grade 1Roughness of the surface: Ra0.4Linearity of the screw: 0.015mmThe surface hard chromium plating hardness after nitrogenation: ≥900HVChromium-plating layer thickness: 0.05-0.1mmHardness of double alloys: HRC56-65Depth of double alloys: 0.8-2.0mm Materials and processes:Quality 38CrMoAIAQuality twin-phase stainlessQuality satellite powder of surface sprayCold alloys hot alloysAdvanced nitridingProcess of hot sprayed hard alloys

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