Deft Design Conical Twin Screw Barrels for Plastic

April 19, 2024

  • Model NO.: customize 20-220
  • Certification: ISO9001:2008
  • Material: Nitriding Steel
  • Nitrided Layer Depth: 0.5-0.8mm
  • Nitrided Hardness: HRC56-58
  • Specification: ISO 9001: 2008 approved
  • HS Code: 84779000
  • Automation: Automatic
  • Size: Customize
  • Hardness: HRC58-62
  • Bimetallic Layer Depth: 3mm
  • Trademark: ZHONGYANG
  • Origin: China
Specification:
Screw diameter: Ø 20mm-Ø 220mm
Mould clamping force: 250T-3200T
Shot weight: 30G-30000G

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

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