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- Jingjin - Extruder Screw Barrel
Jingjin - Extruder Screw Barrel
According to different ingredents and products the screw can be chosen: general type, pin type, barrier type, separation type, and gas-exhausting/vented type, etc.
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- Diameter: φ15-φ500
- L/D ratio:15-55
Technical Parameter:
- Hardness After Hardening & Tempering:HB280-320
- Nitride hardness: 950-1100HV
- Nitride layer depth:0.50-0.80mm
- Nitride brittleness: Less than 2 level
- Surface roughness: Ra 0.4μm
- Linearity of screw: 0.015mm/m
- Bimetallic layer depth: ≥3mm
- Bimetallic hardness: HRC60-72
- Hard-chrome plating hardness after nitriding: ≥950HV
- Chrome-plating layer depth: 0.025~0.10mm