Brief introduction: Screw and Barrel For Rubber Machine Basic parameters: Screw out diameter d:15mm≤d≤300mm Screw length L:L≤10000mm Nitriding hardness:HV≥900 After grinding 0.20mm, HRC ≥760 (38CrMoALA); Nitrided brittleness:≤2 level Surface finish Ra:Ra0.4µm Straightness:0.015mm Thickness of bimetallic layer:1.5-2.0mm Hardness of bimetallic layer:HRC56-60 Thickness of chrome plating layer: 0.03-0.05mm Scope of application: Tires, shoe materials, wires and cables, pipes, seals, etc. Composition and process:
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