Over 29 years experience in screw and barrel , more info pls find kaylee(at)tizatech.com
Specification:
Diameter: Ã?15-Ã?500
L/D ratio:15-55
Base Materials: 1)38CrMoAlA(SACM 645)
2)42CrMo(AISI 4140)
3)Cr12MoV(SKD11)
4)4Cr5MoSiV1(SKD61)
5)9Cr18MoV
6)40Cr
Bimetallic Alloy Materials: 1)Fe-based alloy
2)Ni-based alloy
3)Co-based alloy
4)Tungsten carbide
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: 900-1100HV
Nitrided brittleness: Less than 2 level
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness: â?¥950HV
Chrome-plating layer depth: 0.025~0.10mm
Bimetallic layer depth: 2 mm
Bimetallic hardness: HRC50-65
Material to be extruded: PP, PE, PVC, ABS, AS, PS etc.
We can manufacture all types of screws and barrels according to clientsâ?? requirement