The Path of Least Resistance
Resistance heating uses the passage of electric current through a workpiece for process heating or melting. This is performed in one of two ways:
- Direct resistance heating sends electric current through the material directly, heating it internally due to its ohmic resistance.
- Indirect resistance heating sends electric current through a resistive element, which then transfers the heat to the workpiece by conduction.
Resistance heating is used in many industrial applications, including metalworking (forming, heat treating, and seam welding), glass melting, metal fabrication, and forging (stamping, extrusion, and bending).
Resistance heating offers a number of benefits over fossil-fueled furnaces, including energy savings, rapid heating, fast startup, higher production rates, ease of automation and material saving.
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