38crmoala Screw and Barrel for Rubber Machine

  • Model NO.: D75-200
  • Customized: Customized
  • Material: Nitriding Steel
  • Nitrided Hardness: HRC56-58
  • Bimetallic Layer Depth: 3mm
  • Using Life: 1 Year
  • Trademark: ZHONGYANG
  • Origin: China
  • Certification: ISO
  • Size: Nitriding Steel
  • Nitrided Layer Depth: 0.5-0.8mm
  • Bimetallic Layer Hardness: HRC58-62
  • Type of General Rubber Machinery: Rubber Extruder
  • Warranty: 1 Year
  • Specification: ISO 9001: 2008 approved
  • HS Code: 84779000
Specification:
Diameter of pin screw and barrel: Φ 75mm-Φ 200mm
L/D ratio: 12-18

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.
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