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Parallel twin screw barrel

Date:Dec 30, 2019

Screw diameter: φ45-φ200 (according to customer needs)


Aspect ratio: 16-35


Screw compression ratio can be designed according to different products and formulas


Technical indicators:


Quenched and tempered hardness: HB280-320


Nitriding hardness: 950-1100HV


Nitriding depth: 0.50-0.80mm


Nitriding brittleness: ≤ 2 grade


Surface oxide: Ra0.4μm


Screw straightness: 0.015mm / m


Alloy layer hardness: HRC60-72


Alloy layer depth: ≥3mm


Hardness of surface chrome plating layer after nitriding: ≥950HV


Chrome plating thickness: 0.025 ~ 0.10mm


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