Fog Quenching is developed for the purpose of forced cooling of large objects. Quenching in water is well known but not suitable or available due to oversized or critical objects.

The principle is cooling with forced air with adding high pressurized water and air mixture.Microscopic small droplets close to evaporation phase are influencing the forced cooling by a large factor.

WBT-Electron has further developed Fog Quenching in order to adapt for every size of object.
Fog Quenching has proven to be a high added value for large objects in order to obtain the very best corrosion resistance.

Some references in specialized heat treatments are :
-stabilizing annealing of reactors 50t weight, material 800H. Annealing at ca. 900°C. Wth 80mm
-annealing at 1050°C and forced air cooling on P91 materials, piping. Different thickness
-Solution annealing of reactors 25t weight material: 310S at 1100°C and Fog Quenching down to 400°C within a few minutes. Wth 30mm