Bimetallic Screw Barrel for Extruder Machine

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  • Model NO.: customize
  • Screw Channel Structure: Deep Screw
  • Automation: Automatic
  • Material: Nitriding Steel
  • Nitrided Hardness: HRC56-58
  • Bimetallic Layer Hardness: HRC58-62
  • Specification: ISO 9001: 2008 approved
  • HS Code: 84779000
  • Screw: Twin-Screw
  • Exhaust: Exhaust
  • Size: Customize
  • Nitrided Layer Depth: 0.5-0.8mm
  • Bimetallic Layer Depth: 3mm
  • Trademark: ZHONGYANG
  • Origin: China
Specification:
Diameter: Φ 45mm-Φ 200mm
L/D ratio: 16-35
High quality 38CrMoAla material
Nitration surface treating
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)
(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

Warranty and service: 1 year.
Focus on quality and service.
Experienced manufacturer, we will be the best choice.

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