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Blowing film machine screw barrel
Technical specifications: Surface roughness Ra0 4 diameter Phi of material 38CrMoAIA; 20-Phi; The straightness of the 300 screw is 0.015mm, with a len
Product details
Technical indicators:
| material | 38CrMoAIA | Surface roughness | Ra0.4 |
| diameter | Φ20-Φ300 | Screw straightness | 0.015mm |
| Aspect ratio | L/D=15～55 | Hard chrome plating on the surface after nitriding | HV≥900HV |
| Tempered hardness | HB240°～280° | Thickness of chrome plating layer | 0.05～0.10mm |
| Nitriding hardness | HV850°～1000° | Alloy depth | 0.8～2.0mm |
| Nitriding depth | 0.45～0.7mm | Dual alloy hardness | HRC56°～65° (The alloy is made of nickel based alloy) |
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