Annealing Unit is used in the case produc1on process via annealing of components for the prepara1on of the drawing opera1ons. The tension of the metal conveyor is adjustable in order to prevent loosening due to the expansion. The speed of the conveyor line and the temperature of the system are also adjustable. Cups are annealed via PID controlled electrical resistances that are supported by ceramic pipes and keep the internal temperature constant. The furnace has par1cular hea1ng chambers which reduces the components’ temperature in the last chamber via cold air.