Open Access
Table 1
Comparison of HVF processes (form [6]).
| Explosive forming | Electromagnetic forming | Electrohydraulic forming | ||||
|---|---|---|---|---|---|---|
| Standoff | Contact | Confined | Bridge wire | Spark discharge | ||
| Size limits | 6 m diam. | 6 m diam. | 1.5m diam | 0.3 m diam. | 1.2 m diam. | 1.2 m diam. |
| Shape complexity | Moderately | Simple | Complex | Complex | Complex | Complex |
| Advantages | Large parts | High pressures | Reduced operations for complex shapes | Controllability & repeatability | Controllability & repeatability | Controllability & repeatability |
| Capital cost | Low | Low | Low | Moderate to high | Moderate | Moderate |
| Tooling cost | Low | Low | Moderate | Moderate to high | Low | Low |
| Production rate | 0.4–4 pts/hr | 0.4–4 pts/hr | 2–12 pts/hr | To 1000 pts/hr | 4–12 pts/hr | To 50 pts/hr |
| Leadtime | Short | Short | Short | Moderate to long | Moderate to long | Moderate |
| Facility | Remote | In-plant or remote | In-plant or remote | In-plant | In-plant | In-plant |
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