Extruder single screw barrel


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                                  Product overview:

                                  Screw diameter: 15-300
                                  Length diameter ratio: 15-46
                                  Product type:
                                  Screw for different plastic products can be selected: common type, pin type, barrier type, separation type, exhaust type, etc
                                  Base material:
                                  1)38CrMoAlA(JIS SACM645)
                                  2)42CrMo(AISI 4140)
                                  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
                                  Hardness of surface chromium plating layer after nitriding: ≥ 950hv
                                  Thickness of chromium plating layer: 0.025 ~ 0.085mm
                                  Double alloy depth: 3mm 
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