Extruder screw and barrel for PS
Specification:
Diameter: ?15- ?500
L/D ratio:15-50
Material:
High quality alloy steel
1)38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3)Cr12MoV(JIS SKD-11)
Processing Technology:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Technical Parameter:
Nitrided layer depth:0.50-0.80mm
Nitrided hardness: 950-1100HV
Nitrided brittleness: Less than 2 level
Surface roughness: Ra 0.4μm
Linearity of screw: 0.015mm/m
Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.025~0.10mm
Bimetallic layer depth: 3-5 mm
We can manufacture all types of screws and barrels according to clients' requirement.