Sähkökaariuuneissa

Sähkökaariuuneissa are electric arc furnaces used for melting and refining metals. They operate by passing a high-power electric current through electrodes, creating an electric arc between the electrodes and the metal charge. This arc generates intense heat, reaching temperatures that can melt even refractory metals. The process typically involves three graphite electrodes suspended above a bath of molten metal. The electricity flows from the power source, through the electrodes, and down to the metal, forming the arc.

The primary use of sähkökaariuuneissa is in the production of steel, particularly for specialty steels and alloys. They are highly versatile and can melt a wide range of ferrous and non-ferrous metals, including stainless steel, carbon steel, and various ferroalloys. The ability to precisely control the temperature and atmosphere within the furnace makes them ideal for producing high-purity metals and for processes requiring specific metallurgical properties.

Compared to other melting technologies like the basic oxygen furnace, electric arc furnaces offer greater flexibility in terms of raw material input, readily accommodating scrap metal. This makes them an economically viable option, especially when scrap is readily available. The efficiency and controllability of sähkökaariuuneissa contribute to their widespread adoption in modern metal production. They are often a key component in integrated steel mills and foundries.