- Model NO.: SJZ
- Technics: Forging
- Material: Bimetallic
- Conical Screw and Barrel: Sjz51/65/80/92
- Nitrided Hardness: 900-1000hv
- Bimetallic Hardness: 57~69HRC
- Surface Roughness: Ra 0.4
- Warranty: 3 Months
- Transport Package: Wooden Case
- Origin: Zhangjiagang of China
- Standard: GB
- Feature: Extrusion
- Materials: Bimetallic
- Nitriding Layer Depth: 0.5-0.8mm
- Bimetallic Layer Depth: 3 mm
- Chrome Plating Layer Depth: 0.03-0.09mm
- Linearity of Screw: 0.015mm
- Trademark: chenxing
- Specification: SJZ
- HS Code: 84779000
Material: High Quality Of Alloy Steel
1. 38CrMoALA(JIS SACM645)
2. 42CMo(JIS SCM440)
3. 9Cr18MOV
4. CW6Mo5Cr4V2
Products Are Processed By The Following Steps:
Hot Treatment
Nitriding Treatment
Electroplating Hard-chrome layer
Hi-frequency Quenching
Spray Coating Bimetallic Layer Of Corrosion And Abrasion Resistant
Vacuum Quenching
Compressing rate of screw can be designed according to different raw material and products.
| echnical Information for Extruder Conical Screw and Barrel | |||
| Main Base materials | 1.38CrMoAlA (SACM645) | Main Alloy Materials | 1. Ni-based alloy/Deloro alloy |
| 2. SKD-61 (Special Tool Steel) | 2. Tungsten carbide/Wolfram carbide | ||
| 3. 42CrMo (Ultrahigh StrengthSteel) | 3. NiCo-based alloy | ||
| 4. DC53 (Cold WorkDie Steel) | 4. Fe-based alloy | ||
| 5. W6Mo5Cr4V2 (High-SpeedToolSteel) | 5. Co-based alloy | ||
| Processing Technics | 1. Heat treatment | Technical parameters | Nitriding layer depth:0.5-0.8mm |
| 2. Quenching | Nitrided hardness:900-1000HV | ||
| 3. Nitriding treatment | Bimetallic layer depth:3 mm | ||
| 4. Bimetallic alloy welding for screw | Bimetallic hardness:57~69HRC | ||
| 5. Bimetallic alloy centrifugal casting for barrel | Hard-chrome plating hardness after nitriding:≥950HV | ||
| 6. Hard-chrome electroplating | Chrome-plating layer depth:0.03-0.09mm | ||
| Linearity of screw:0.015mm | Surface roughness:Ra 0.4 | ||
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