China PVC Profile Extruder Twin Screw and Barrel, Find details about China Twin Screw Barrel, Screw and Barrel from PVC Profile Extruder Twin Screw and Barrel
| 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 | ||