Aluminum spray quenching is a cooling process used in the heat treatment of aluminum alloys to achieve desired mechanical properties such as strength, hardness, and toughness. This method involves spraying fine mist of water, oil, or polymer-based quenchants onto the heated aluminum component to control the cooling rate that Reduces internal stresses and minimizes distortion compared to immersion quenching. It is an alternative to traditional immersion quenching and is commonly used in aerospace, automotive, and industrial applications.