Parallel twin screw barrel


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                                  Product overview:


                                  Screw diameter: Φ 45mm - φ 200mm

                                  Length diameter ratio: 16-35

                                  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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