This lab is a continuation of Case 1. The only difference is that the extrusion is assumed to be happening in non-isothermal and frictionless conditions. Use the same geometric and process data from Case 1. Dies are to be meshed for thermal analysis.
Thermal Data
The thermal properties of workpiece material (Ti-6Al-4V) are:
Thermal conductivity (k): 79.5
N/sec/°C
Heat capacity (C):
23 N/mm2/°C
Emissivity (e):
0.0
Flow stress:
at 600 °C
C=550 MPa
m=0.08
at 900 °C
C=140 MPa
m=0.4
Thermal Conductivity (k) 79.5
N/sec/°C
1.0633e-3 Btu/sec/in/°F
Heat Capacity (C)
2.3 N/mm2/ °C
0.0198 Btu/in3/°F
Initial Temperature
900 °C
1697 °F
Emissivity (e)
0.0
Flow Stress
600 °C
1112°F
550 Mpa
79.768 ksi
0.08
900 °C
1652 °F
140 Mpa
20.305 ksi
0.4
The thermal properties of the tool material (H13) are:
Thermal conductivity (k): 19 N/sec/°C
Heat capacity (C):
3.77 N/mm2/°C
Emissivity (e):
0.0
Thermal conductivity (k) 19
N/sec/°C
2.5413e-4 Btu/sec/in/°F
Heat Capacity (C)
3.77 N/mm2/°C 0.0325
Btu/in3/°F
Emissivity (e)
0.0
The heat transfer coefficient at the interface between the workpiece and the container and at the interface between the ram and the workpiece is 5 N/mm/°C/sec (1.699e-3 Btu/sec/in2/°F). The heat transfer coefficient between the objects and the environment is 0.007 N/mm/°C/sec (2.3785e-6 Btu/sec/in2/°F). Die initial temperatures are 315°C (599°F) and the environment temperature is 25°C (77°F).
Results:
Case 1: Grid
Deformation Simulation
Effective
Strain Contours
Effective
Strain Rate Contours
Temperature
Contours
Load
Stroke
Case 2: Grid
Deformation Simulation
Effective
Strain Contours
Effective
Strain Rate Contours
Temperature
Contours
Load
Stroke
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