Ceramic welding is a special technique used to reconstruct and restore the refractory material of the furnace upperstructure.
A specially designed mixture of refractory powder is applied using a flow of oxygen to the damaged area. Due to the resulting oxythermic reaction, the powder “ceramizes”, creating a solid mass that rebuilds, protects and seals the worn area.
Internal ceramic welding is performed using cooled lances that allow the refractory powder to be applied inside the furnace.
IRF manufactures all its cooled lances in-house, so any damaged areas of the upperstructure can be restored
External ceramic welding is primarily used to seal the expansion joints in both new furnaces following pre-heating and active furnaces, as well as to repair minor external damage.