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      1. Conical twin screw

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        Specifications:

        24/52, 35/76, 45/90, 45/100, 50/105, 51/105, 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, 105/213

        The above are standard specifications, can be customized according to customer requirements.

        The screw compression ratio can be designed according to different products and different formulations.

         

        Base material:

        1)38CrMoAlA(JIS SACM645)

        2)42CrMo(AISI 4140)

        3)4Cr5MoSi V1 (JIS SKD-61)

         

        Treatment process:

        heat treatment

        Nitriding treatment

         

        Technical parameters:

        Nitriding depth: 0.50mm-0.80mm

        Nitriding hardness: 900-1000hv

        Nitriding brittleness: < grade 1

        Surface roughness: RA 0.4

        Straightness of screw: 0.015mm

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