| Brand Name: | shenglong |
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| Place of Origin: | China (Mainland) |
| Nitride Case Depth: | 0.5mm-0.8mm |
| Nitride Hardness: | 950-1050HV |
| Nitride Brittleness: | less thanGrade One |
| Surface Roughness: | Ra0.4um |
| Screw Straightness: | 0.015mm |
| Alloy Hardness: | HRC58-65 |
| Alloy Depth:: | 0.8mm-3.5mm |
| Chromium Coating Thickness: | 0.025~0.10mm |
Quick Details
Specifications
1.Advanced Nitriding Technology
2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy
3. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses
different alloy and welding methods for the screw of different functions.
4.Bi-metallic screw&barrel can be provided for two-three times more lifespan than nitrided screw&barrel.
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Diameter
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Φ15mm-Φ350mm
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Designing
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Screw structure and compression
ratio can be designed according
to different products &different mixtrues.
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Materials
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38CrMoAlA
(JIS SACM645)
SKD61
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Application
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pvc wpc profile, plate & sheet
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Nitride Case Depth
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0.5mm-0.8mm
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Technology
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1)Longer time Gas Nitriding treatment
2)special anti-wear & abrasion alloy (bimetallic)
3)tungsten carbide
4)cobalt base alloy
5)stainless steel
6)Gh113 nickel based alloy
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Nitride Hardness
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950-1020HV
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Packing
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Wrapped up by film in wooden
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Nitride Brittleness
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≤Grade One
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Payment Term
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T/T , L/C
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Surface Roughness
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Ra0.4um
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Delivery Term
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25 working days
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Screw Straightness
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0.015mm
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Port Departure
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Shanghai/Ningbo
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Alloy Hardness
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HRC58-62
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Min. Order
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1 set
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Alloy Depth
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0.5mm-0.8mm
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Common Nitrided:1years
Bimetallic: much longer lifetime.
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Guarantee
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If the screw diameter or l/d ratio is not fixed, please feel free to inform the products and mixture you need, we can select & design the matching cylinder screw by your requirement.
Technological Process:
Blanking→Rough Machining→Quenching & Tempering →Semi Finishing
Machining→Finished Product→Detecting→Nitring/Alloy Processed →Finish Machining