PARALLEL TWIN SCREW BARREL:
PURPOSE: WPVC,WPE, super high molecular sheet,1:2 high culcium buckle, 50%-400% calcium compound pipe,50%-300% calcium compound profile,flexible PVC sheet. PP,PE,ABS PVC,Pelltizer,Pipe,Sheet,ETC.
Ø52/2, Ø60/2, Ø65/2, Ø70/2, Ø72/2, Ø75/2, Ø80/2, Ø85/2,
Ø90/2, Ø93/2, Ø100/2, Ø105/2, Ø110/2, Ø115/2, Ø120/2, Ø125/2, Ø130/2,
Ø140/2, Ø150/2, Ø160/2, Ø170/2, Ø180/2, Ø190/2, Ø200/2, Ø250/2
Base materials:
1) 38CrMoAlA (JIS SACM645) 2) 42CrMo (AISI 4140) 3) 4Cr5MoSi V1 (JIS SKD-61)
4) DC53 (JIS G4404) 5) Cr12MOV (SKD11) 6) 9Cr18MOV
Bimetallic alloy materials:
1)Ni-based alloy/Deloro alloy
2)Fe-based alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Bimetallic Alloy level | Level A -containing Tungsten of 40% Level B -containing tungsten of 25% Level C - containing tungsten of 9.5% |
Processing technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Hard-chrome electroplating
Technical parameters:
Nitriding layer depth: 0.5-0.8mm
Nitrided Hardness: 900-1000HV (HRC 55-65)
Nitrided brittleness: Less than grade 1
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
Bimetallic layer depth: 3 mm
Bimetallic layer hardness: HRC 55-70
Hard-chrome plating hardness after nitriding: ≥ 950HV
Chrome-plating layer depth: 0.03-0.1mm
