Wikipedia
An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. Induction furnace capacities range from less than one kilogram to one hundred tonnes capacity and are used to melt iron and steel, copper, aluminium and precious metals.
The advantage of the induction furnace is a clean, energy-efficient and well-controllable melting process compared to most other means of metal melting. Most modern foundries use this type of furnace, and now also more iron foundries are replacing cupolas with induction furnaces to melt cast iron, as the former emit lots of dust and other pollutants.
Since no arc or combustion is used, the temperature of the material is no higher than required to melt it; this can prevent loss of valuable alloying elements. The one major drawback to induction furnace usage in a foundry is the lack of refining capacity; charge materials must be clean of oxidation products and of a known composition and some alloying elements may be lost due to oxidation (and must be re-added to the melt).
Usage examples of "induction furnace".
An induction furnace that sets up the heating field at almost any distance from the elements that handle the power.
The first was the fact that to smelt ores, their induction furnace would eat a tremendous amount of amperes.
It worked like an induction furnace, high-frequency current cooking anything placed between the two coils.
Kren picked up a branding plate from the shelf and took it to the induction furnace.
I assume he produced a sort of induction furnace in which he tempered his head -- or maybe he induced currents in the wall plates themselves -- I tell you I don't know.
Downing hadn't done much of a job, or maybe you cant do much of a job on an ethertype without running it through an induction furnace.