- Model NO.: Customized
- Plastic Processed: All Kinds
- Automation: Automatic
- Screw Barrel: High Output PVC Parallel Twin Screw and Barrel Ex
- Nitrided Hardness: 900-1000hv
- Surface Roughness: Ra0.4
- Trademark: Zhongyang
- Origin: China(Mainland)
- Type: Granulators
- Screw: Twin-Screw
- Computerized: Computerized
- Nitrided Layer Depth: 0.5-0.8mm
- Nitrided Brittleness: Less Than Grade 1
- Linearity of Screw: 0.015mm
- Specification: ISO9001: 2008
- HS Code: 84779000
Specification:
Diameter: Φ 45mm-Φ 200mm
L/D ratio: 16-35
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
Bimetalic 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
We could manufacture various kinds of screws and barrels according to the customer's requirement.
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Dovin limited , https://www.dovinmachine.com