Combined heat treatment furnaces are multifunctional furnaces that allow different heat treatment processes to be integrated and carried out within the same furnace. Combined furnaces have the capacity to perform multiple heat treatment applications simultaneously (e.g., annealing, hardening, tempering), providing flexibility and efficiency in production processes. Combined systems ensure that different heat treatment processes have complementary characteristics, improving both the mechanical properties and surface quality of workpieces. These furnaces, widely preferred in industries such as metallurgy, automotive, and machinery, offer high capacity and customizable processing options.