Roller Hearth Continuous Furnace

A roller hearth furnace is a type of industrial furnace used for heat treating material in continuous and index-continuous production processes.Definitions of open-hearth furnace. a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it. type of: furnace. an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.