Bimetallic conical twin screw and barrel for extruder
Specifications as below:
Φ35/Φ77 ,Φ45/Φ90 ,Φ50/Φ105 ,Φ51/Φ105 ,Φ55/Φ110 ,Φ60/Φ125 ,Φ65/Φ120 ,
Φ65/Φ132 ,Φ70/Φ140 ,Φ75/Φ150 ,Φ80/Φ143,Φ80/Φ156,Φ92/Φ188
Cincinnati,Krauss Maffei,Weber,Battenfeld,Amut designs available.
Material:
High quality alloy steel
1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3) Cr12MoV(JIS SKD-11)
4) 4Cr5MoSiVL(JIS-61)
5) 9Cr18MoV
Technics:
Heat treatment
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
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:3-5mm
Bimetallic hardness:HRC50-65