• Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components
  • Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components
  • Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components
  • Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components
  • Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components

Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components

Certification: ISO
Color: Fixed
Customized: Customized
Standard: National
Type: Connection
Material: Alloy Steel
Customization:

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Basic Info.

Model NO.
Twin Parallel Screw Barrel
Parallel Twin Screw and Barrel
PVC Pelletizer Screw and Barrel
Transport Package
Film Wrapped in Wooden Case
Specification
ISO9001: 2008
Trademark
Zhongyang
Origin
Zhoushan, China
HS Code
84779000
Production Capacity
150sets/Month

Product Description

Double Screws Twin Parallel Screw Cylinder Plastic Machinery Components

Double screws Twin Parallel Screw Cylinder Plastic machinery components, double 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

Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
(3)4Cr5MoSi V1 (JIS SKD-61)

Bimetallic alloy materials:
1)Fe-based alloy
2)Ni-based alloy/Deloro alloy
3)Tungsten carbide/Wolfram carbide

Technics:
Heat treatment
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

Terms and Conditions:
Production time: 30 days
Packing: Film wrapped in wooden case(Export standard)
Trade Terms: FOB, CNF, CIF
Payment Terms: T/T, L/C, West Union
Warranty and service: 1 year

If you don't see the specific type of screw barrel you need here, pls contact us by email or by phone, we will find out solutions according to your requirements within 12 hours.
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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