Industrial furnaces are divided into two categories according to heating methods: one is flame furnace (or fuel furnace), which uses solid, liquid or gas fuel combustion heat in the furnace to heat the workpiece; the second is electric furnace, in the furnace Convert electrical energy into heat for heating.
Industrial furnaces are divided into two categories according to the thermal system: one is the discontinuous furnace, also known as the periodic furnace, which is characterized by no temperature zone in the furnace, and the furnace is produced in one or two shifts, and the furnace is in each heating cycle The temperature is variable, such as various chamber furnaces, trolley furnaces, pit furnaces, bell furnaces, etc.; the second is continuous furnace, which is characterized by the division of temperature zones in the furnace, which is generally composed of preheating, heating (high temperature) ), soaking (heat preservation) three sections, the furnace is continuous production in three shifts, the temperature in each section can be considered unchanged during the heating process of the industrial furnace, such as two-stage or three-stage continuous heating furnace , Push rod heating furnace and heat treatment furnace, ring furnace, walking furnace, vibrating bottom furnace, cupola and lime kiln, etc.