Research Article
Optimization of Deformation Behaviors during Continuous Forming Extrusion of C18150 Copper Alloy through Response Surface Methodology
Table 3
Variables for simulation 12.5 mm C18150 feedstock.
| | S. no | Variables | Details |
| | Data of geometry | | 1 | Diameter of wheel r, D (mm) | 350 | | 2 | Die diameter, d (mm) | 6 | | 3 | Flash-gap size, G (mm) | 1 | | 4 | Die length, L (mm) | 10 |
| | Data of simulation | | 1 | Velocity of wheel, N (rpm) | 4, 8, 12 | | 2 | Initial temperature (°C) | 20 | | 3 | Environment temperature (°C) | 20 | | 4 | Die temperature (°C) | 400–600 |
| | Feedstock material data | | | Material | C18150 | | 1 | Yielding stress (MPa) | 432.01 | | 2 | Tensile strength (MPa) | 452.03 | | 3 | Sensitivity of strain rate | 0.22 | | 4 | Capacity of heat (N/mm2°C) | 2.3 | | 5 | Conductivity (N/s°C) | 238 | | 6 | Convection coefficient (N/s°C mm) | 0.02 | | 7 | Emissivity | 0.3 | | 8 | Boltzmann constant (N/s°C mm4) | 5.669 × 10−11 | | 9 | Interface heat transfer coefficient (N/s°Cmm) | 30 | | 10 | Interface coefficient of friction | 0.95 (wheel groove and feedstock), 0.03 (feedstock and shoe/abutment), and 0.05 (feedstock and die) |
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