Zhejiang Jingjin Machinery Co.,Ltd.
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- Jingjin - Parallel Twin Screw Barrel
Jingjin - Parallel Twin Screw Barrel
Diameter: φ45-φ200 （according to customers demands) L/D ratio:16-35. The compression ratio of screw can be designed according to different products and mixtures.
- Hardness After Hardening & Tempering:HB280-320
- Nitrided hardness: 950-1100HV
- Nitrided layer depth:0.50-0.80mm
- Nitrided brittleness: ≤ level 2
- 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