Components such as welded structures, cold drawn or formed items require stress relieving as stresses are induced in these processes which will deform the components after they are put in use. 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.
Our industrial roller hearth designs have been proven in the hard environments of heavy industry all over the world. JR FURNACE long history in this area has resulted in many advancements in the machinery and processes associated with roller hearths.
On the mechanism component side, our polished roll adaptations allow lubricant free roller performance for decades of trouble free operation. Rolls or roller bearings can be water cooled and atmosphere tight. Water cooled rolls are ceramic lined for heavy and high temperature applications. No-vibration axial fans assure that when a fan goes out of balance the machine is not damaged by the vibration. JR FURNACE ceramic lined heavy-duty furnace casings wil the toughest mill environments 7 X 24 X 365 for decades.
On several large automotive applications our customers have stated, "We haven't turned your furnace off or cooled it down in years". JR FURNACE has built Roller Hearth furnaces for applications up to 2150°F for annealing, normalizing, carburizing and similar applications.