Since casting is a process in which a liquid solidifies inside a mold, various problems can cause defects in the finished component. Effects such as spurts, heterogeneities, trapped gases or loss of solubility of gases in the transition from liquid to solid or during cooling, can cause the appearance of porosities in the parts manufactured by casting, often difficult to avoid in castings of complex geometry.

Thanks to Hot Isostatic Pressing (HIP) technology, the above-mentioned problems associated with castings can be repaired effectively and efficiently while applying the heat processes required for the material to come into service. This avoids having to carry out expensive, manual repairs to castings by welding. This is in addition to the advantage that the use of HIP improves the mechanical properties of the parts, such as resilience, toughness or fatigue life.

Common examples of HIP and casting combinations:

In jewelry, certain palladium and iridium castings are subjected to HIP to improve the responsiveness of these materials to polishing.

In aeronautics, engine components that are manufactured by casting (nickel super alloy) are subjected to HIP to eliminate the porosity of these critical components in aircraft engines.