How do you optimize high-pressure die casting for structural automotive components?

Structural HPDC optimization for components like shock towers requires: Alloy selection (high-integrity alloys like Silafont-36, Aural-2 with low Fe, modified Si), Vacuum/semi-solid processing (reduce porosity to <1% for T7 heat treatment capability), Die thermal management (conformal cooling channels, spot cooling), Gate and runner optimization (controlled fill, minimize air entrapment - target fill time 20-50ms), Real-time process monitoring (cavity pressure, temperature), Shot profile optimization (slow shot, fast shot velocities), Squeeze pin placement for thick sections, and Heat treatment protocol (T7 for ductility). Achieve yield strength >120 MPa, elongation >10% required for crash-relevant parts. Validate with CT scanning, mechanical testing, and crash simulation correlation.