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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