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Zhoushan Vanscrew Machinery Co.,Ltd.
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Price: | 200.0~250.0 USD |
Payment Terms: | T/T,L/C |
Place of Origin: | Zhejiang, China (Mainland) |
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Technical Index:
Materil:1)high-quallity 38CrMoALA
Heat-treatment:
1.Nitriding treatment
2.Electroplated hard-chrome finish
3.High-frequency quenching
4.Spray coating Bimetallic-alloy
5.Vacuum quenching
Technical specification
Hardness After Hardening &Tempering: | HB240 -280 |
Nitrided Hardness: | Hv850-1000 |
Nitrided Depth: | 0.45-0.7mm |
Nitrided Brittleness: | ≤Grade 2 |
Surface Roughness: | Ra0.4 |
Screw straightness: | 0.015mm |
Surface Chromate-plating's Hardness After Nitrided: | ≥900Hv |
Chromate-plating Depth: | 0.05-0.10mm |
Bimetallic-alloy Hardness: | HRC56 -65 |
Alloy Depth: | 0.8-2.0mm |
Single screw and barrel of extruder machine
Diameter of screw :Φ15-Φ360 L/D=15-45
Types of screws
Gradual , saltain, wave, screen, double screen,taper,distribntary,saparating,exausting dowel,mixed smelting,double screws,three screws,more screws,granulating cet.
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