• Model NO.: Twin Parallel Screw Barrel
  • Plastic Processed: PVC
  • Automation: Automatic
  • Size: Customize
  • Nitrided Layer Depth: 0.5-0.8mm
  • Trademark: Zhongyang
  • Origin: China(Mainland) Zhejiang
  • Type: Profile Extruder
  • Screw: Twin-Screw
  • Computerized: Computerized
  • Material: Nitriding Steel
  • Nitrided Hardness: HRC56-58
  • Specification: ISO 9001: 2008 approved
  • HS Code: 84779000
PVC Pelletizing screw barrel Twin Parallel Screw Barrel plastic machinery screw barrel
Specification:
Diameter: Φ 45mm-Φ 200mm
L/D ratio: 16-35
The compression ratio of screws can be designed according to different products and ingredients

Technical Information
Base Materials:
(1)38CrMoAlA(JIS SACM645)
(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

Production time: 35 days.
Warranty and service: 1 year.
Focus on quality and service.
Experienced manufacturer, 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.

Pulley

Tail Pulley,Bend Pulley,Head Pulley,Drive Pulley

Quantum Conveying Systems Yangzhou Co.,Ltd. , https://www.ycectech.com