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Conical twin screw barrel

Date:Dec 30, 2019

Screw diameter: 45/90, 45/100, 50/105, 051/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135 , 70/140, 75/150, 80/143, 80/156, 92/188


(The above are standard specifications, which can be customized according to customer needs)


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 roughness: Ra 0.4μm


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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