The Stress Relieving Furnace is designed to adjust the casing hardness before pressing. The temperature of the heating sections can be adjusted separately and kept constant by the PID method. Due to specially designed air ducts inside the oven, the internal temperature is equally distributed at every point. In the cooling section all products are cooled. The speed of the furnace belt can be adjusted according to work intensity. Belt material is prefered to be made of special stainless steel that will not be affected by heat.