Parallel Twin Screw Barrel for PVC Extrusion Parallel
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  • Model NO.: PVC twin screw barrel
  • PVC Pipe Extruder Screw Barrel: Screw Barrel for PVC Granule Extrusion
  • Transport Package: Slushing Oil Coated& Film Wrapped in Wooden Case
  • Origin: China(Mainland)
  • Screw Barrel: Bimetallic Parallel Twin Screw Cylinder for PVC
  • Trademark: ZHONGYANG
  • Specification: D12-D300
  • HS Code: 84779000
Twin parallel screw barrel, bimetallic screw barrel, Bimetallic Parallel Twin Screw cylinder for PVC film extrusion

Specification:
Screw Diameter: Φ 15- Φ 300
L/D ratio: 15-46

Product classification:
Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and gas-exhausting type, etc.

Technical Information

Base Materials:
1). 38CrMoAlA(JIS SACM645).
2). 42CrMo(AISI 4140).
3). 9Cr18MOV

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

Warranty and service: 1 year

Our advantages:
1). Excellent raw materials
2). Good customer service
3). Rapid delivery
4). Reasonable price
5). Production quickly

Experienced manufacture, we will be the best choice.
 
Main Base materials
 		 1.38CrMoAlA  (Nitriding Steel)
2.  SKD-61   (Special Tool Steel)
3.  42CrMo (Ultrahigh Strength   Steel)
4. DC53 ( Cold Work   Die Steel)  
5. W6Mo5Cr4V2 ( High-Speed   Tool   Steel )
6. HPT
 
 
 
Main Alloy Materials		 1.  Ni-based alloy/Deloro alloy
2.  Tungsten carbide/Wolfram carbide
3.  NiCo-based alloy
4.  Fe-based alloy
5.  Co-based alloy  
 
 
 
 
Processing Technics		 1.  Heat treatment
2.  Quenching
3.  Nitriding treatment
4.  Bimetallic alloy welding
5.  Bimetallic alloy centrifugal casting
6.  Hard-chrome electroplating
 
 
 
 
 
Technical parameters		 Nitriding layer depth 0.5-0.8mm
Nitrided hardness HRC56-58
Nitrided brittleness Less than grade 1
Surface roughness Ra 0.4
Linearity of screw 0.015mm
Hard-chrome plating hardness ≥HRC57
Chrome-plating layer depth 0.03-0.09mm
Bimetallic layer depth 3 mm
Bimetallic layer hardness HRC58-62
Above are main technical information, a suitable screw and barrel will be made according to your requirement.

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