The steel ball heat treatment furnace uses pusher type to push the charge (or plate charge) placed on the track into and out of the furnace depending on the gap of pusher. When the workpiece is running in the furnace, it is relatively static. When it is heated and quenched, some of the materials are poured out by the material tray, and some of the workpiece is discharged together with the material rib or cooled in the quenching tank. This kind of furnace is widely used in heat treatment, such as quenching, normalizing, annealing, tempering, carburizing and nitriding, because of its strong adaptability to workpiece and easy to form production line.