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biemtallic screw barrel, PE PVC Bimetallic Extrusion Machine Screw and Barrel, twin conical screw barrel, PU PC Bimetallic,plastic machinery screw barrel
Specification:
Screw Diameter: D20mm-D220mm
Mould clamping force: 250T-3200T
Shot weight: 30G-30000G
Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
(3)9Cr18MOV
Bimetallic alloy materials:
(1)Fe-based alloy
(2)Ni-based alloy/Deloro alloy
(3)Co-based alloy
(4)NiCo-based alloy
(5)Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: ≥ 950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year
Focus on quality and service.
Experienced manufacturer, we will be the best choice.
