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Contact Us
- Contact Person : Ms. Wang Mia
- Company Name : Zhoushan Zhongyang Screw Manufacturing Co., Ltd.
- Tel : 86-574-88114868
- Fax : 86-574-88114878
- Address : Zhejiang,Ningbo,Room 408,Unit 10,Jinshuiwan Building,Changfeng,Yinzhou District
- Country/Region : China
- Zip : 315000
screws and barrels/twin screw&barrel
Product Detailed
Related Categories:Plastic Product Making Machinery Parts
Detailed Product Description
The conical twin screw&barrel for extruder in many specifications.
The conical twin screw& barrel's Abraasion resistant and corrosion resistant
The conical twin orifice barrel of Material:High quality alloy steel
1)38CrMoAlA
2)9Gr18MoV
Technics:1)Heat-treatment
2)Nitriding treatment
3)Spray coating Bimetallic-alloy
Technical data
Nitriding depth:0.50-0.80mm
Nitriding hardness:900-1000HV
Nitriding barittleness:Less than grade 1
Surface roughness:Ra0.4
Linearity of the screw:0.015mm
Hardness of the chrome plating after nitriding:More than 950HV
Chrome plating thickness:0.025-0.085mm
