Extruder Single Screw And Barrel

Applicationt: 

BMW

Production Description:

Specification:
Diameter: Ø15- Ø300
L/D ratio:15-50
 
Material:
High quality alloy steel
1)38CrMoAlA(JIS SACM645)                        
2) 42CrMo(AISI 4140)
3)Cr12MoV(JIS SKD-11)
 
Technics:
1) Heat treatment
2) Nitriding treatment
3) Hard-chrome electroplating
4) Bimetallic alloy welding
 
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