Extruder single screw barrel


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                  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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