Planetary mechanical screw barrel

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                  Base material:

                   

                  (1) 38CrMoAlA(JIS SACM645)

                  (2)42CrMo(AISI 4140)

                   

                  Treatment process:

                  1. Heat treatment

                  2. Nitriding treatment

                   

                  Technical parameters:

                  1. Nitriding depth: 0.4mm-0.6mm

                  2. Nitriding hardness: 850-950hv

                  3. Nitriding brittleness: < = 1

                  4. Surface roughness: Ra0.4

                  5. Straightness of screw: 0.015mm

                   

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