Types of Industrial Electric Ovens

Seven categories: resistance furnace, induction furnace, vacuum furnace, electron beam furnace, heat treatment (or smelting) unit, heat treatment auxiliary equipment, combustion furnace.

Resistance furnace:

Three major components: heater, furnace lining, heat-resistant components

1. Divided into two categories: periodic and continuous

2. Features of periodic furnaces:

A. Charges are added at the same time and taken out at the same time

b. The charge is basically unchanged during heating (except for special cases: such as roller furnace, roller hearth furnace)

c. Strive for uniform temperature in the working area

3. Classification of periodic resistance furnaces

A. Box furnace

b. Trolley furnace (divided into self-propelled and traction type), used for annealing, the workpiece is cooled with the furnace after heating

c. Pit furnace

D. Bell furnace (mainly used for annealing, the heating hood can be lifted)

E. Bottom-rise hood furnace (fixed hood, lifting base, suitable for large furnaces)

F. Rotary drum furnace

g. Sealed box furnace (also known as multi-purpose furnace, can be used for carburizing, smooth quenching, carbonitriding and other heat treatment processes. It is heated by a radiant tube, and the radiant tube is a resistance wire fixed by a refractory ceramic disc mounted on a sealed heat-resistant steel pipe. , such a structure makes the atmosphere in the furnace have no effect on the heating element)

4. Continuous resistance furnace

A. push furnace

b. conveyor belt furnace

c. Mesh belt furnace (suitable for annealing, sintering, brazing and solution treatment of thin and small parts. The structure is similar to a conveyor belt furnace)

D. Continuous Rotary Drum Furnace

E. Roller hearth furnace (feed pans move on rollers)

F. rotary hearth furnace