Electric Annealing Furnaces

Process annealing involves heating the steel to a temperature below (typically 10–20°C below) the lower critical temperature (Ac1) and is often known as 'subcritical' annealing. After heating, the steel is cooled to room temperature in still air.An annealing furnace works by heating a material above the recrystallization temperature and then cooling the material once it has been held at the desired temperature for a suitable length of time. The annealing process uses heat to reduce the hardness and increase the ductility and toughness of various steels, cast iron, and alloys. It involves heating the workpiece beyond its recrystallisation temperature. Doing so encourages new grain formation and allows the existing grains to reorient.