Open Access
Table 3.
Conditions used for hot hat-shaped bending including semi-punching.
| Heating temperature and time | 930 °C and 3.3 s |
| Current for heating | 7.7 kA |
| Transferring time | 2.0 s |
| Bending temperature | 850 °C |
| Holding time at bottom dead centre | 5 s |
| Bending speed | 70 mm/s |
| Clearance | c = 0% |
| Remainder rate | r = 15% |
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