A stress relieving furnace is a specialised type of industrial furnace used for heat treating metals to relieve internal stresses that can develop during manufacturing processes such as casting, forging, or welding. The furnace works by heating the metal to a specific temperature and holding it at that temperature for a predetermined amount of time, allowing the material to slowly cool down.
Stress relieving furnaces can be operated using a variety of heating sources such as gas, electricity, or oil. The temperature range of these furnaces varies depending on the materials being treated, typically ranging from 149 to 950°C. Our bogie hearth furnaces for stress relieving or stress relief annealing are available with standard configuration as well as configurations custom for the user’s job profile and volume.
For lower stress relieving temperatures, 750°C and below a centrifugal fan-based circulation system with stainless steel louvers is implemented to assure adequate convective heat transfer. For higher temperatures, the design is based on radiation heat transfer without air circulation.