38crmoaia Conical Twin Screw and Barrel

  • Model NO.: SJZ
  • Technics: Forging
  • Material: Bimetallic
  • Conical Screw and Barrel: Sjz51/65/80/92
  • Nitrided Hardness: 900-1000hv
  • Bimetallic Hardness: 57~69HRC
  • Surface Roughness: Ra 0.4
  • Warranty: 3 Months
  • Transport Package: Wooden Case
  • Origin: Zhangjiagang of China
  • Standard: GB
  • Feature: Extrusion
  • Materials: Bimetallic
  • Nitriding Layer Depth: 0.5-0.8mm
  • Bimetallic Layer Depth: 3 mm
  • Chrome Plating Layer Depth: 0.03-0.09mm
  • Linearity of Screw: 0.015mm
  • Trademark: chenxing
  • Specification: SJZ
  • HS Code: 84779000
Technical Parameter:
Material: High Quality Of Alloy Steel
1. 38CrMoALA(JIS SACM645)
2. 42CMo(JIS SCM440)
3. 9Cr18MOV
4. CW6Mo5Cr4V2

Products Are Processed By The Following Steps:
Hot Treatment
Nitriding Treatment
Electroplating Hard-chrome layer
Hi-frequency Quenching
Spray Coating Bimetallic Layer Of Corrosion And Abrasion Resistant
Vacuum Quenching

Compressing rate of screw can be designed according to different raw material and products.
echnical Information for Extruder Conical Screw and Barrel
Main Base materials 1.38CrMoAlA (SACM645) Main Alloy Materials 1. Ni-based alloy/Deloro alloy
2. SKD-61 (Special Tool Steel) 2. Tungsten carbide/Wolfram carbide
3. 42CrMo (Ultrahigh StrengthSteel) 3. NiCo-based alloy
4. DC53 (Cold WorkDie Steel) 4. Fe-based alloy
5. W6Mo5Cr4V2 (High-SpeedToolSteel) 5. Co-based alloy
Processing Technics 1. Heat treatment Technical parameters Nitriding layer depth:0.5-0.8mm
2. Quenching Nitrided hardness:900-1000HV
3. Nitriding treatment Bimetallic layer depth:3 mm
4. Bimetallic alloy welding for screw Bimetallic hardness:57~69HRC
5. Bimetallic alloy centrifugal casting for barrel Hard-chrome plating hardness after nitriding:≥950HV
6. Hard-chrome electroplating Chrome-plating layer depth:0.03-0.09mm
Linearity of screw:0.015mm Surface roughness:Ra 0.4

 

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