Extruder Twin Screw Barrel Extrusion Screw Barrel Double Conical Screws Barrel

extruder twin screw barrel extrusion screw barrel double conical screws barrel
Process specification of screw and barrel:
Φ15/Φ30,   Φ25/55,   Φ35/75,   Φ40/Φ83,    Φ48/Φ112 Φ48/117,    Φ50/105 Φ50/110,   Φ51/Φ105 Φ51/Φ120,    Φ55/Φ110 Φ55/Φ125,    Φ58/Φ125,    
Φ60/Φ125 Φ60/Φ129,    Φ65/Φ120 Φ65/Φ132,    Φ68/Φ147,    Φ70/Φ150,    Φ74/Φ156 Φ74/Φ162,    Φ80/Φ143 Φ80/Φ156 Φ80/Φ162,
Φ86/Φ177,   Φ92/Φ184 Φ92/188,    Φ95/Φ193,    Φ105/Φ203



Base Materials: 
1). 38CrMoAlA(JIS SACM645).Nitriding
2). 42CrMo(AISI 4140). 
3). 4Cr5MoSi V1 (JIS SKD-61). 
4). 9Cr18MOV
5). HPT

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
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