Product Description
The bimetallic barrel is produced by casting a 2-3 mm-thick alloy coat which is anti-corrosive abrasion resistant and thema stable on the barrel inner wall Its effectice service life is greatly enhanced compared to the ordinary nitridinged barrel Bimetal has an extraordinary obvious superionrity to processing engineering plastice fluorine plastics PPO and etc.
Our company producess the single-and bimetal screw using special alloy powders sprayed and welded on the screw's ridge We can also ues different alloys and welding methods for different functions
Materials
38CrmoAIA
Duplex stainless Steels
GH3#
Power Metallurgy Raw Material
Cold/Thermal Spray Hard Metal Process
Advanced Nitriding Process
Corrosion&Abrasion Resistance Bimetal Spraying Process
Technical Index
| Product |
Screw&Barrel |
| Tempering hardness |
HB240-280 |
| Hardness of nitrogen treatment |
HV950-1000 |
| Depth of nitrogen layer |
0.55-0.70 |
| Nitrided brittleness |
Less than grade 1 |
| Surface roughness |
Ra 0.4 |
| Screw straightness |
0.015mm |
| Hardness after nitriding |
≥900HB |
| Chromium-plating depth |
0.05-0.10mm |
| Alloy hardness |
HRC55-62 |
| Alloy Depth |
1.5-2.0mm |
Production Process
- BlankingRough MachiningQuenching and TemperingSemi Finishing MachiningFinish MachiningNitriding or Bimetallic TreatmentDetectingFinished ProductDebugging after the Sale
Our Service
Warranty and service: 1years
Our Advantages
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
Audited Supplier 
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