- Model NO.: Twin conical screw barrels
- Plastic Processed: PVC
- Automation: Automatic
- Size: Customize
- Nitrided Layer Depth: 0.5-0.8mm
- Trademark: ZHONGYANG
- Origin: China(Mainland) Zhejiang
- Type: Pipe Extruder
- Screw: Twin-Screw
- Computerized: Computerized
- Material: Nitriding Steel
- Nitrided Hardness: HRC56-58
- Specification: ISO9001: 2008 approved
- HS Code: 84779000
Specification:
45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188
The above are standard specifications, we can customize according to customers' requirements.
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
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
Experienced manufacturer, we will be the best choice.
Focus on quality and service.
Main Base materials   |
1.38CrMoAlA Â (Nitriding Steel)Â | |
2. Â SKD-61 Â Â (Special Tool Steel)Â | ||
3.  42CrMo (Ultrahigh Strength  Steel) | ||
4. DC53 ( Cold Work  Die Steel)   | ||
5. W6Mo5Cr4V2 ( High-Speed  Tool  Steel ) | ||
6. HPTÂ | ||
  | ||
    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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