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Model NO.: D45-D200
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Size: Customize
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Nitrided Layer Depth: 0.5-0.8mm
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Bimetallic Layer Depth: 3mm
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Trademark: ZHONGYANG
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Origin: China
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Screw: Twin-Screw
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Material: Nitriding Steel
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Nitrided Hardness: HRC56-58
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Bimetallic Hardness: HRC58-62
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Specification: ISO 9001: 2008 approved
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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
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
Production time: 35 days
Warranty and service: 1 year
Focus on quality and service.
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