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Parameters:

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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