Conical twin screw barrel
Material
Alloy-Steel of High-quality
1)38CrMoALA(JIS SACM645)
Heat-treatment
Nitriding treatment
Electroplated hard-chrome finish
High-frequency quenching
Spray coating Bimetallic-alloy
Vacuum quenching
Technical data
| 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: | ≥950Hv |
Type of conical twin screw barrel
Specification (d/D) | Length (mm) | Capacity (Kg/h) | Speed (RPM) |
Φ35/Φ77 | 810 | 40-70 | 5~50 |
Φ45/Φ90 | 990 | 50-80 | 5~45 |
Φ50/Φ105 | 1070 | 100-150 | 4~45 |
Φ51/Φ105 | 1220 | 100-150 | 4~45 |
Φ55/Φ110 | 1220 | 120-180 | 4~40 |
Φ60/Φ125 | 1320 | 150-200 | 4~40 |
Φ65/Φ120 | 1440 | 200-250 | 4~40 |
Φ65/Φ132 | 1440 | 200-250 | 4~40 |
Φ70/Φ140 | 1460 | 220-300 | 4~40 |
Φ75/Φ150 | 1480 | 250-320 | 4~35 |
Φ80/Φ143 | 1800 | 300-360 | 4~35 |
Φ80/Φ156 | 1660 | 300-360 | 4~35 |
Φ92/Φ188 | 2000 | 400-500 | 4~35 |
Compressing rate of screw can be designed according to different raw materials and products.
Conical twin screw barrel
