conical twin screw for extruder

conical twin screw for extruder Technical specifications: Hardness of adjuster: HB260-290 Hardness of nitration: HV800-1050 Depth of nitration: 0.4-0.7mm Fragility of nitration: Less than grade 1 Roughness of the surface: Ra0.4 Linearity of the screw: 0.015mm The surface hard chromium plating hardness after nitrogenation: ≥900HV Chromium-plating layer thickness: 0.05-0.1mm Hardness of double alloys: HRC56-65 Depth of double alloys: 0.8-2.0mm Materials and processes: Quality 38CrMoAIA Quality twin-phase stainless Quality satellite powder of surface spray Cold alloys hot alloys Advanced nitriding Process of hot sprayed hard alloys Parallel twin screw extruder Guarantee: Common Nitrided: approx 2 years Bimetallic : much longer lifetime

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