Solution treatment and age hardening (T6) is used to strengthened road wheels, cylinder heads, brake calipers, etc after the casting process. This involves heating the aluminium castings to a specified temperature, quenching in water, and then reheating. Temperature profiling is difficult, due to the route the products take through continuous furnaces. The High Temperature Water Quench System is the answer, where temperature profiling is a requirement, or where a temperature survey is needed to prove compliance to a heat treatment specification (CQI-9, etc.).