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                      Extruder screw

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                      Extruder screw

                      Extruder screw

                      • Specifications:
                         
                        Screw diameter: Ø 15-Ø 300
                         
                        Aspect ratio: 15-46
                         
                         
                         
                        Product type:
                         
                        For different plastic products, screw can be selected: common type, pin type, barrier type, separation type, exhaust type, etc
                         
                        Substrate 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
                         
                        Screw straightness: 0.015mm
                         
                        Hardness of surface chromium plating after nitriding: ≥ 950hv
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