Single Screw Barrel for Injection Molding Machine

Specification: 
Diameter: D 45mm-D 200mm 
L/D ratio: 16-35 
The compression ratio of screws can be designed according to different products and ingredients 

Base Materials: 
(1)38CrMoAlA(JIS SACM645) 
(2)42CrMo(AISI 4140) 
(3)4Cr5MoSi V1 (JIS SKD-61) 

Bimetallic alloy materials: 
1)Fe-based alloy 
2)Ni-based alloy/Deloro alloy 
3)Tungsten carbide/Wolfram carbide 

Technics: 
Heat treatment 
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 

Terms and Conditions: 
Production time: 30 days 
Packing: Film wrapped in wooden case(Export standard) 
Trade Terms: FOB, CNF, CIF 
Payment Terms: T/T, L/C, West Union 
Warranty and service: 1 year