Application | Film blowing |
Model Number | Extruder screw barrel |
Hardening hardness | HB280-320 |
Nitrided Hardness | HV900-1000 |
Nitriding Depth | 0.5-0.8MM |
Nitrided Brittle | Less than Grade 2 |
Surface roughness | Ra 0.4 |
Screw straightness | 0.015MM |
Alloy hardness | HRC 55-65 |
Process | Nitriding, Bimetallic, alloy,chrom plating |
Types of screw:
Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type, mixed type, double-head type, three-head type, multi head type etc.
ZHOUSHAN QUNYING PLASTIC MACHINERY MANUFACTORY is a professional manufacturer of extruder screw barrel, injection screw barrel, parallel twin screw barrel, conical twin screw barrel, rubber screw barrel, bimetallic screw barrel and other various trpes of screw barrel. At present, Qunying screw have a professional design experienced production team. We are located in east of Zhoushan city, zhejiang province, close shanghai, Ningbo port.ZHOUSHAN QUNYING SCREW has a strong techinial force, equiped with advanced equipment and strict tests. Mostly products materials are selected from high quality powder alloy steel with the best materials to exploit market and most new materials, add reasonable process design through tempering, molding, qualitatine.Till now, our screw barrels have been exported to more than 40 countries all over the world, like USA, India, South Africa, Turkey, Russia and so on. We sincerely welcome customers to negotiate consultation and exchanges guidance. Your satisfaction is our eternal pursue and goal.
Diameter | 15-350mm | MOQ | 1 Set | |
Materials | 38CrMoAIA | Technological Parameter | Roughness | Ra 0.4um |
42CrMo(JIS SCM440) | Hardness of Quenching and Tempering | HB 240-280 | ||
9Cr18MoV | Depth of Nitride Layer | 0.5~0.8mm | ||
CW6Mo5Cr4V2 | Hardness of Nitride | HV 980-1080 | ||
SKD11,61 | Alignment of Screw | 0.015mm | ||
GH113,and etc. | Depth of Alloy Layer | 1.5~3.5mm | ||
Technical Process | 1.Rough Machining | |||
2.Frenquency Quenching and Tempering | ||||
3.Finish Machining | ||||
4.Gas Nitriding | ||||
5.Spraying and welding with alloy power | ||||
6.Screw polishing |