- Certification: ISO
- Type of General Rubber Machinery: Rubber Extruder
- Screw Barrel: Screw for Rubber Machine
- Specification: ISO9001, ISO9001: 2008
- HS Code: 84779000
- Type: General Rubber Machinery
- Type of Tire Machinery: Rubber Regeneration Machinery
- Trademark: Zhongyang
- Origin: China(Mainland)
Specification:
Diameter of pin screw and barrel: Φ 75mm-Φ 200mm
Diameter of cold feed or hot feed screw and barrel: Φ 30mm-Φ 300 mm
L/D ratio: 12-18
Technical Information
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
Warranty and service: 1 year
Our advantages:
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
Experienced manufacture, we will be the best choice.
We introduce ourselves as the leading manufacturer of Cylinder
Liners, cylinder head ,Piston Crown ,Piston Skirt ,valve stem,Valve Seat ,valve
housing etc. since last 25years in China.
if you are having any inquiry regarding the products, please send us at your earliest.
Should you need further information please write to us, We are at your service.
if you are having any inquiry regarding the products, please send us at your earliest.
Should you need further information please write to us, We are at your service.
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ZhouShan HeCheng Machinery Co., LTD. , http://www.hcmarineparts.com