Introduction to the working principle of resistance furnace

Resistance furnace is an industrial furnace that uses electric current to heat the electric heating element or heating medium in the furnace, thereby heating the workpiece or materia.
It is a heating furnace that uses electric current to pass through a resistive material to generate thermal energ.
Resistance furnaces are used in the machinery industry for heating before metal forging, metal heat treatment heating, brazing, powder metallurgy sintering, glass ceramics roasting and annealing, melting of low melting point metals, drying of sand molds and paint films,et.
A resistance furnace is an electric furnace that uses the Joule heat generated by the current passing through the conductor as the heat sourc.
The resistance furnace uses electricity as the heat source, converts the electrical energy into heat energy through the electric heating element, and heats the metal in the furnac.
The ratio of resistance furnace to flame has high thermal efficiency, up to 50-80℅, the thermal system is easy to control, the working conditions are good, and the furnace body has a long service lif.
It is suitable for heating workpieces with strict requirements, but the cost of electricity is hig.
According to the heat transfer method, resistance furnaces are divided into radiant resistance furnaces and convection resistance furnace.
The radiant resistance furnace is mainly based on radiation heat transfer, and the convective heat transfer effect is smal.
.According to the way of electric heat generation, resistance furnaces are divided into two types: direct heating and indirect heatin.