FURNACES

摘要

A furnace for heating one or more bodies in which heated gas is introduced into the furnace chamber through one or more injectors and are conveyed to the bodies in manner involving appreciable resistance to gas flow. In preferred arrangement a continuous metal strip is conveyed through the furnace on a gaseous support cushion, the gas being introduced into the furnace under pressure through injectors which communicate with the lower portion of the furnace. The injectors generate a substantial recirculation of gas within the furnace.