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| Model NO. | Injection Screw Barrel | Nitrided Hardness | HRC56-58 |
| Material | Nitriding Steel | Size | Customize |
| Transport Package | Slushing Oil Coated& Film Wrapped in Wooden Case | Specification | ISO 9001: 2008 |
| Trademark | Zhongyang | Origin | China(Mainland) Zhejiang |
| HS Code | 84779000 | Production Capacity | 150 Sets/ Month |
|
Main Base materials |
1.38CrMoAlA (Nitriding Steel) | |
| 2. SKD-61 (Special Tool Steel) | ||
| 3. 42CrMo (Ultrahigh Strength Steel) | ||
| 4. DC53 ( Cold Work Die Steel) | ||
| 5. W6Mo5Cr4V2 ( High-Speed Tool Steel ) | ||
| 6. HPT | ||
|
Main Alloy Materials |
1. Ni-based alloy/Deloro alloy | |
| 2. Tungsten carbide/Wolfram carbide | ||
| 3. NiCo-based alloy | ||
| 4. Fe-based alloy | ||
| 5. Co-based alloy | ||
|
Processing Technics |
1. Heat treatment | |
| 2. Quenching | ||
| 3. Nitriding treatment | ||
| 4. Bimetallic alloy welding | ||
| 5. Bimetallic alloy centrifugal casting | ||
| 6. Hard-chrome electroplating | ||
|
Technical parameters |
Nitriding layer depth | 0.5-0.8mm |
| Nitrided hardness | HRC56-58 | |
| Nitrided brittleness | Less than grade 1 | |
| Surface roughness | Ra 0.4 | |
| Linearity of screw | 0.015mm | |
| Hard-chrome plating hardness | ≥HRC57 | |
| Chrome-plating layer depth | 0.03-0.09mm | |
| Bimetallic layer depth | 3 mm | |
| Bimetallic layer hardness | HRC58-62 | |
| Above are main technical information, a suitable screw and barrel will be made according to your requirement. | ||
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